Cable

Fiber Optic vs Coaxial Cable: Key Differences, Uses & Which to Choose

Posted on July 18, 2026July 18, 2026 by

When planning a satellite, VSAT, or telecom installation, one of the first decisions you face is cable type. Fiber optic and coaxial cable both carry signals from point A to point B — but they work in completely different ways, and choosing the wrong one means poor performance, expensive rework, or a system that won’t scale.

This guide breaks down everything you need to know: how each cable works, where each excels, and how to make the right call for your specific project.

Cross-section diagram comparing the internal layers of coaxial cable (LMR-400) versus fiber optic cable (SMF OS2) — Left: Coaxial cable carries both RF signal and DC power through a copper center conductor. Right: Fiber optic cable carries light only — no DC power capability.

What Is Coaxial Cable?

Coaxial cable carries RF signals as electrical waves along a center copper conductor, insulated from a surrounding braid or foil shield by a dielectric foam core. The shield keeps the signal contained and reduces external interference. An outer PE or PVC jacket provides mechanical and weather protection.

In VSAT and satellite applications the most common types are LMR-400 (standard Ku-band IFL, runs to ~30m), LMR-600 (medium runs to ~60m), LMR-900 (long runs to 80m+), and legacy RG-214. For broadcast and CATV distribution, 75Ω RG-6 is standard.

The capability that makes coaxial indispensable for satellite work: it carries DC power alongside the RF signal. The same cable that carries your IF signal from modem to LNB also delivers the 13V or 18V DC that powers the LNB — plus the 22 kHz polarisation tone — and the 24–48V DC that drives the BUC. No other single cable can do this.

What Is Fiber Optic Cable?

Fiber optic cable carries signals as pulses of light through a glass core, surrounded by cladding (a lower-refractive-index glass layer that traps light inside by total internal reflection), a protective buffer coating, and an outer jacket. There are no copper conductors — signals travel at the speed of light with virtually no attenuation over distance.

Two main types exist: single-mode fiber (SMF, OS1/OS2) for long-distance runs up to 40+ km, and multi-mode fiber (MMF, OM3/OM4) for shorter data links up to ~300–550m. For telecom backhaul and building-to-building links, SMF OS2 is the current standard.

The defining advantages: attenuation of just 0.2 dB/km at 1550 nm (versus approximately 6.6 dB/100m for LMR-400 at 1 GHz), complete immunity to electromagnetic interference, and effectively unlimited bandwidth. The defining limitation: fiber cannot carry DC power. Any powered equipment at the far end requires a separate power cable.

Signal Attenuation: The Numbers That Decide Everything

Signal loss — attenuation — is the single most important factor in cable selection. Here’s how the main cable types compare at 100 meters:

Bar chart showing signal attenuation per 100 meters for fiber optic OS2, LMR-900, LMR-600, LMR-400, RG-6 and RG-58 cables at 1 GHz — Signal loss per 100m at 1 GHz. Fiber OS2 loses virtually nothing over any practical run. RG-58 and RG-6 are unsuitable for any professional RF application beyond short jumpers.

At Ku-band frequencies (12 GHz), coaxial losses are significantly higher still — LMR-400 loses approximately 30 dB per 100m at Ku-band, which is why VSAT IFL runs must be kept short or upgraded to larger cable (LMR-600 or LMR-900).

Fiber Optic vs Coaxial: Full Comparison

Feature	Coaxial Cable (LMR-400)	Fiber Optic (SMF OS2)
Signal medium	Electrical (RF waves)	Light (photons)
Attenuation @ 1 GHz	6.6 dB / 100m	0.02 dB / 100m
Attenuation @ Ku-band (12 GHz)	~30 dB / 100m	N/A — not RF
Max VSAT IFL run (Ku-band)	30m (LMR-400) · 60m (LMR-600) · 80m+ (LMR-900)	Not suitable for IFL
Max data run (1 Gbps)	~100m (Cat6 Ethernet)	10+ km (SMF)
EMI immunity	Partial — braid reduces, does not eliminate	Complete — light is unaffected by EMI
DC power over cable	✓ Yes — LNB 13/18V + BUC 24–48V	✗ No — separate power cable required
RF signal (native)	✓ Yes	✗ No — requires optical conversion
Bandwidth	DC to 40 GHz (LMR-600)	Practically unlimited (>100 THz)
Field termination	Easy — crimp tool + N-type / SMA / BNC	Requires fusion splicer + cleaver
Security	Can be passively tapped	Tap causes detectable signal loss
Ground loop / surge risk	Yes — copper conductor	None — glass is non-conductive
Weight	Heavier	Very light
Cable cost	Lower	Moderate to high
Equipment cost	Lower	Higher (transceivers, media converters)
Typical connectors	N-type, F, BNC, SMA, TNC	LC, SC, ST, FC

When to Use Coaxial Cable

✓ Coaxial is the right choice for:

VSAT and satellite IFL runs — Mandatory. Your satellite modem must deliver DC power to the LNB (13V/18V + 22 kHz polarisation tone) and BUC (24–48V) through the same cable that carries the IF signal. Use LMR-400 up to 30m, LMR-600 to 60m, LMR-900 to 80m+ at Ku-band.

Antenna feedlines — VHF/UHF, cellular base station, and microwave antenna connections are always coaxial. LMR-400 is the standard for fixed base station feedlines; LMR-600 for tower runs over 20m.

RF signal distribution — Splitters, combiners, amplifiers, RF patch panels: anywhere you’re routing a live RF signal, coaxial connections are required throughout the chain.

CCTV and analog video — Analog camera systems (HD-CVI, TVI, AHD) use RG-59 or RG-6. Still widely deployed throughout the GCC due to existing cable infrastructure.

Remote DC power delivery — Any equipment that needs power over the cable (BUC on a tower, LNB on a dish) requires coaxial IFL. There is no alternative.

Field installations — Coax connectors are field-terminable with a hex crimp tool. Fiber fusion splicing requires capital equipment and a clean environment — coax wins on field flexibility every time.

When to Use Fiber Optic Cable

✓ Fiber optic is the right choice for:

Long data backbone runs (>100m) — Any network link over 100 meters at Gigabit speeds or higher should be fiber. SMF supports 10G Ethernet over 10+ km without amplifiers.

Building-to-building links — Outdoor aerial or buried runs between buildings need fiber for ground-loop isolation and lightning surge protection. Copper cable between separate structures can conduct a surge that destroys equipment at both ends.

High-EMI environments — Generator rooms, industrial motor drives, high-voltage transformer enclosures: fiber is completely immune to electromagnetic interference regardless of the surrounding electrical noise.

High-bandwidth data (40G / 100G / 400G) — These speeds require fiber. Not achievable over coaxial cable at any practical distance.

Security-critical links — Fiber cannot be intercepted passively. Any physical tap causes a measurable signal loss that optical monitoring can detect and alert on.

Harsh or marine environments — Fiber is immune to salt air corrosion, moisture ingress effects on signal quality, and temperature-driven impedance changes.

Why VSAT Always Uses Coaxial — Without Exception

Diagram showing a VSAT installation with coaxial IFL cable between the outdoor unit and satellite modem, and fiber optic or Cat6 cable between the modem and office network — In a VSAT installation, coaxial cable (LMR-400/600/900) is mandatory for the IFL between the outdoor unit and modem — it carries both the RF signal and DC power to the BUC and LNB. Fiber or Cat6 handles the IP data backbone from modem to the office network.

In any VSAT installation — from a single maritime terminal to a large teleport earth station — the IFL between the satellite modem and the outdoor unit must be coaxial cable. The reason is simple: the modem or ODU controller delivers DC power to the LNB and BUC through the same coaxial IFL that carries the IF signal. Fiber optic cable cannot carry DC power.

Fiber-based IF extension systems do exist. They use optical modulators and demodulators with separate power injectors to extend IFL runs beyond 100 meters in large earth station facilities. But these are expensive, complex installations reserved for sites where very long cable runs make standard coax impractical. For any typical VSAT site, coaxial cable is the correct and only practical IFL solution.

Frequently Asked Questions

Can I replace my VSAT coaxial IFL with fiber optic cable?

Not without additional equipment. The BUC and LNB require DC power that can only be delivered over coaxial cable in a standard installation. Fiber-based IF extension systems exist for very long runs (>100m) in large facilities, but they require optical modulators and separate power injectors — significant cost and complexity. For any typical VSAT installation, coaxial cable is the correct IFL choice.

Which has less signal loss — fiber optic or coaxial?

Fiber wins by a dramatic margin for data. LMR-400 loses approximately 6.6 dB per 100 meters at 1 GHz — and ~30 dB per 100m at Ku-band (12 GHz). Single-mode fiber OS2 loses just 0.2 dB per kilometer at 1550 nm. Over a 100m run, fiber loses roughly 0.02 dB versus LMR-400’s 6.6 dB — about 330× less attenuation. However, this comparison only applies to data signals. For native RF signals (satellite IF, antenna feedlines), there is no “fiber alternative” without conversion equipment.

Is fiber optic cable more expensive than coaxial?

Fiber cable typically costs more per meter, and field termination requires a fusion splicer — significant capital equipment. However, for long data backbone runs where coax would require inline amplifiers or multiple segments, fiber often becomes cost-competitive overall. For short RF applications under 50 meters, coaxial cable is almost always the lower-cost total solution.

Can fiber optic cable be used as an antenna feedline?

No — not without conversion equipment. Fiber carries light signals, not analog RF. An antenna feedline must be coaxial to carry the raw RF signal between the antenna and the radio or satellite modem. Any fiber in an RF path requires RF-to-optical conversion at both ends, adding cost and complexity that makes it impractical for standard installations.

What coaxial cable should I use for Ku-band VSAT?

Use LMR-400 for IFL runs up to 30 meters at Ku-band, LMR-600 for 30–60 meters, and LMR-900 for runs beyond 60 meters. All outdoor sections should use weatherproof N-type connectors with proper sealing tape. Never use RG-6 or RG-58 for VSAT — their attenuation at Ku-band is far too high even for short runs.

Need coaxial cable for your VSAT or satellite installation?
BravoSatcom stocks LMR-400, LMR-600, LMR-900 and IFL cables. We ship across the GCC.
Shop Cables →

Cable

Times Microwave LMR Series: Complete Cable Guide (LMR-100 to LMR-900)

Posted on July 17, 2026July 17, 2026 by admin

When someone says “LMR cable” on a VSAT or radio installation, they almost always mean Times Microwave Systems’ LMR series — the industry standard for low-loss 50Ω coaxial cable. The range runs from the 2.79mm LMR-100 pigtail all the way to the 22mm LMR-900 long-haul run, and choosing the wrong model either wastes budget or degrades your link.

This guide covers the full LMR lineup: what each model is, where it belongs, connector compatibility, and how to specify correctly for VSAT IFL, two-way radio feedlines, and general RF installations.

LMR Series Attenuation at 1 GHz (dB/100m)

Lower bar = less signal loss = better long-run performance

LMR-100

35.4 dB/100m

LMR-195

18.7 dB/100m

LMR-240

12.8 dB/100m

LMR-400

6.6 dB/100m ← Standard VSAT IFL

LMR-600

3.6 dB/100m

LMR-900

2.4 dB/100m

Times Microwave LMR Series | Approx. values @ 1 GHz | bravosatcom.com

What Does LMR Stand For?

LMR stands for Low-loss Microwave RF. Times Microwave Systems introduced the LMR series as a direct replacement for legacy RG-series cables (RG-58, RG-8, RG-213) — cables designed in the 1940s that hadn’t kept pace with modern RF requirements.

The number after “LMR” is roughly the outside diameter in hundredths of an inch: LMR-400 is ~0.405″ OD, LMR-600 is ~0.590″ OD. The larger the number, the thicker the cable and the lower the signal loss per metre. All LMR cables are 50Ω and use foam polyethylene dielectric with a bonded foil + braid shield — the combination that gives them their attenuation advantage over solid-PE RG cables.

LMR Series: Full Specs at a Glance

Model	OD (mm)	Atten @ 450 MHz	Atten @ 1 GHz	Atten @ 5.8 GHz	Vel. Prop.
LMR-100	2.79	23.0 dB/100m	35.4 dB/100m	~98 dB/100m	83%
LMR-195	4.95	12.8 dB/100m	18.7 dB/100m	~52 dB/100m	83%
LMR-240	6.10	8.9 dB/100m	12.8 dB/100m	~36 dB/100m	84%
LMR-300	7.62	6.6 dB/100m	9.8 dB/100m	~27 dB/100m	83%
LMR-400	10.29	4.9 dB/100m	6.6 dB/100m	~15.7 dB/100m	85%
LMR-500	12.70	3.6 dB/100m	4.9 dB/100m	~11.8 dB/100m	85%
LMR-600	14.99	2.9 dB/100m	3.6 dB/100m	~8.5 dB/100m	86%
LMR-900	22.10	1.8 dB/100m	2.4 dB/100m	~5.6 dB/100m	87%

All values approximate. Refer to Times Microwave datasheets for exact published specifications.

LMR vs Legacy RG Cable: The Real Difference

The most common question when switching to LMR is: “is it really that much better than RG-213?” The answer is yes — by a significant margin:

Cable	Attenuation @ 450 MHz	Attenuation @ 1 GHz
RG-58	~54 dB/100m	~79 dB/100m
RG-213	~15 dB/100m	~22 dB/100m
LMR-400	4.9 dB/100m	6.6 dB/100m

On a 20m antenna feedline at 450 MHz, RG-213 loses ~3 dB — LMR-400 loses ~1 dB. That 2 dB difference is real link margin, and it can be the difference between a reliable radio network and intermittent dropouts on a fringe site.

Which LMR Cable for Which Application?

LMR-100 — Equipment Jumpers and Pigtails

LMR-100 is the thinnest and most flexible cable in the range. At 2.79mm OD it’s used for very short equipment connections: jumpers, test leads, and patch leads inside enclosures where flexibility is critical and run length is under 1–2 metres. Not suitable for outdoor runs or anything beyond short internal connections.

LMR-195 — Short Patch Cables and Radio Leads

At 4.95mm OD, LMR-195 is the best replacement for RG-58 — same size, dramatically lower loss. Well suited for patch cables on equipment racks, short antenna leads on mobile radios, and general RF connections where RG-58 is currently used. Keep runs under 15m at VHF/UHF.

LMR-240 — VHF/UHF Short Feedlines

LMR-240 (6.10mm OD) suits short base station antenna feedlines up to ~20m at VHF/UHF, or comms room rack cabling where some flexibility is needed. The 25mm minimum bend radius makes it reasonably easy to route through tight spaces and conduit.

LMR-400 — VSAT IFL (≤30m) and Radio Base Station Feedlines

LMR-400 is the workhorse of the range. At 10.29mm OD it’s the standard cable for VSAT IFL runs up to 30m at Ku-band, two-way radio base station antenna feedlines up to 50m at VHF/UHF, and the majority of outdoor RF installation runs. It’s the default choice when no other constraint applies.

For a full head-to-head on LMR-400 vs LMR-600, including attenuation charts and VSAT run length guidance, see the LMR-400 vs LMR-600 guide.

LMR-600 — VSAT IFL (30–60m) and Long Radio Feedlines

When your IFL run exceeds 30m but stays under 60m at Ku-band, LMR-600 (14.99mm OD) is the correct cable. Its attenuation at 5.8 GHz is ~8.5 dB/100m vs LMR-400’s ~15.7 dB/100m — a significant advantage for longer satellite runs. It’s less flexible (minimum bend radius 38mm) and requires more planning during installation, but there’s no alternative when the run length demands it.

LMR-900 — Long IFL Runs (60–100m+) and Earth Stations

LMR-900 (22.10mm OD) is used for long IFL runs in large VSAT earth stations, broadcast uplink facilities, and teleports where cable runs exceed 60–80m. Attenuation at 1 GHz is just 2.4 dB/100m — about one-third of LMR-400. The trade-offs are stiffness (100mm minimum bend radius) and cost. Requires appropriately sized N-type or 7/16 DIN connectors.

Application Quick-Select

Application	Recommended LMR	Max Run (Ku-band)	Max Run (UHF/VHF)
Equipment jumpers / pigtails	LMR-100 / LMR-195	<2m	<5m
Handheld radio patch lead	LMR-195	—	<10m
Short base station feedline	LMR-240	—	<20m
Standard VSAT IFL	LMR-400	~30m	~50m
Long VSAT IFL	LMR-600	~60m	~80m
Earth station / very long run	LMR-900	~100m+	>100m

Connector Compatibility

LMR cables use standard 50Ω connectors — but you must match the connector body to the cable series. Using an LMR-400 connector on LMR-600 cable will result in a poor crimp and intermittent contact in the field.

LMR Model	Standard Connectors	Notes
LMR-100	SMA, MMCX, MCX	Small-body connectors only
LMR-195	SMA, BNC, TNC, N-type	Specify LMR-195 body size
LMR-240	SMA, N-type, BNC, TNC	N-type standard for outdoor use
LMR-400	N-type, 7/16 DIN	N-type is standard for VSAT IFL
LMR-600	N-type, 7/16 DIN	Larger N-type body — do not mix with LMR-400 connectors
LMR-900	N-type, 7/16 DIN	7/16 DIN preferred for high-power applications

Field note: Always specify connectors by cable model, not just connector type. “N-type for LMR-400” and “N-type for LMR-600” are different parts. Using the wrong body size is one of the most common installation errors.

LMR vs LMR-DB (Direct Burial)

Times Microwave offers a -DB (Direct Burial) variant for most LMR models — LMR-400-DB, LMR-600-DB, etc. The DB variant adds a gel-filled or solid PE jacket designed for direct burial in soil without conduit. Electrical specifications are identical to the standard version. If any part of your cable run is underground, specify the DB variant — standard LMR jackets are not designed for prolonged soil contact.

Frequently Asked Questions

Is LMR-400 suitable for outdoor installation in the UAE?

Yes. Standard LMR-400 has a UV-resistant black polyethylene outer jacket rated for outdoor exposure. For direct underground burial, specify LMR-400-DB.

What’s the difference between LMR-400 and LMR-400-UF (Ultra Flex)?

LMR-400-UF uses a stranded centre conductor instead of solid copper, making it significantly more flexible for routing in tight spaces. Attenuation is marginally higher (~5–8%) but negligible for most applications. Both use the same connector bodies and termination tools.

Can I use LMR-600 everywhere instead of LMR-400?

You can, but it costs more per metre, is stiffer to route, and the performance gain on runs under 30m is small. LMR-400 is the correct choice for standard VSAT IFL runs. Reserve LMR-600 for runs that genuinely exceed 30m at Ku-band.

Do LMR cables work at Ku-band (14 GHz)?

LMR-400 and larger models are rated for Ku-band frequencies. At 14 GHz, LMR-400 loses approximately 30 dB/100m, limiting practical IFL runs to ~30m. LMR-600 extends this to ~60m and LMR-900 to ~100m+.

Are LMR cables 50Ω or 75Ω?

All LMR cables in this guide are 50Ω — the standard for VSAT, satellite, and two-way radio applications. Times Microwave also produces 75Ω LMR variants for broadcast/CATV distribution. Never mix 50Ω and 75Ω cables in the same RF path without an appropriate matching network.

Shop Times Microwave LMR Cables at Bravo Satcom

Bravo Satcom supplies the full Times Microwave LMR series across the UAE and GCC — including LMR-400, LMR-600, and LMR-900 in standard and direct-burial variants, cut to length with factory or field-fitted N-type connectors.

Not sure which cable and connector combination suits your installation? Send us your run length, frequency, and application and we’ll spec it correctly. Contact us at sales@bravosatcom.com or +971 55 541 5892.

Cable

IFL Cable for VSAT: Length, Loss, and Sizing Guide

Posted on July 17, 2026July 17, 2026 by admin

The cable run between your VSAT outdoor unit and your modem is called the IFL — Intermediate Frequency Link. It carries the satellite signal after the LNB has downconverted it from Ku or C-band to L-band (950–2150 MHz), and it carries the uplink signal from your BUC before transmission.

Get the IFL cable wrong — wrong type, wrong length, connectors not properly terminated — and your link budget suffers before a single packet reaches the satellite. This guide covers what the IFL is, how to choose the right cable, how to calculate loss for your specific run, and what maximum lengths apply to each cable type.

What Is an IFL Cable?

IFL stands for Intermediate Frequency Link. It is the coaxial cable connecting two points in a VSAT system:

🛰️ ODU
BUC + LNB

IFL Cable
L-band 950–2150 MHz
+ DC power + DiSEqC

📡 IDU
VSAT Modem

The LNB downconverts the received satellite signal from Ku-band (10.7–12.75 GHz) or C-band (3.7–4.2 GHz) to L-band (950–2150 MHz). The BUC upconverts the transmit signal from L-band to Ku or C-band. The IFL cable carries both of these L-band signals simultaneously — receive down, transmit up — through a single coax run. The IFL also carries DC power from the modem to the LNB and, in most systems, carries the DiSEqC or tone commands that control LNB polarisation and band switching.

IFL Cable Specifications

Frequency Range

The IFL operates at L-band: 950 MHz to 2,150 MHz for most Ku-band VSAT systems.

System Type	IFL Frequency Range
Ku-band VSAT (standard)	950–1,450 MHz (low band) or 950–2,150 MHz (wideband)
Ku-band VSAT (wideband LNB)	950–2,150 MHz
Ka-band VSAT	950–2,150 MHz
C-band VSAT	950–1,750 MHz (typical)

Always check your modem and LNB specs. The IFL cable must have low attenuation across the full operating frequency range of your specific system.

Impedance and Connectors

All IFL cables are 50Ω. Do not use 75Ω cable (standard satellite TV cable) for IFL runs — the impedance mismatch introduces reflections and degrades signal quality. Both ends terminate in N-type connectors, the standard for VSAT IFL work. See the N-Type vs SMA vs BNC connector guide for a full comparison.

Cable Types for IFL Runs

The Times Microwave LMR series is the industry standard for VSAT IFL installations.

Cable	OD	Loss at 1 GHz	Loss at 2 GHz	DC Resistance (Ω/100m)	Typical Use
LMR-240	7.3 mm	10.2 dB/100m	14.8 dB/100m	3.0	Short jumpers, tight spaces
LMR-400	10.8 mm	5.6 dB/100m	8.0 dB/100m	1.4	Standard IFL runs up to 75m
LMR-600	15.8 mm	3.6 dB/100m	5.2 dB/100m	0.9	Long runs 75–130m
LMR-900	22.9 mm	2.4 dB/100m	3.5 dB/100m	0.6	Very long runs 130m+

Attenuation at 2 GHz per 100m — visual comparison:

LMR-240

14.8 dB

LMR-400

8.0 dB

LMR-600

5.2 dB

LMR-900

3.5 dB

⚠️ Do not use RG6 for VSAT IFL. RG6 is 75Ω — not 50Ω. Impedance mismatch affects every interface. Higher attenuation at L-band, lower DC current capacity, less shielding. It is a domestic TV cable and does not belong in a professional VSAT installation.

For a direct cable comparison, see LMR-400 vs LMR-600: Which Should You Choose?

IFL Signal Loss: How to Calculate Your Run

Attenuation accumulates with distance. Every metre of cable, every connector, and every in-line component adds insertion loss.

Total loss (dB) = Cable loss (dB/m) × Run length (m) + Connector loss × Count + In-line component losses

A good N-type connector pair adds approximately 0.1–0.2 dB. Surge arrestors add 0.3–0.5 dB each.

LMR-400 Loss Reference

Run Length	Loss at 1 GHz	Loss at 1.5 GHz	Loss at 2 GHz
10 m	0.56 dB	0.69 dB	0.80 dB
20 m	1.12 dB	1.38 dB	1.60 dB
30 m	1.68 dB	2.07 dB	2.40 dB
40 m	2.24 dB	2.76 dB	3.20 dB
50 m	2.80 dB	3.45 dB	4.00 dB
60 m	3.36 dB	4.14 dB	4.80 dB
75 m	4.20 dB	5.18 dB	6.00 dB
100 m	5.60 dB	6.90 dB	8.00 dB

LMR-600 Loss Reference

Run Length	Loss at 1 GHz	Loss at 1.5 GHz	Loss at 2 GHz
30 m	1.08 dB	1.33 dB	1.56 dB
50 m	1.80 dB	2.22 dB	2.60 dB
75 m	2.70 dB	3.33 dB	3.90 dB
100 m	3.60 dB	4.44 dB	5.20 dB
150 m	5.40 dB	6.66 dB	7.80 dB

✅ Worked example 60m LMR-400, wideband Ku-band (to 2 GHz), 4 N-type connectors, 1 surge arrestor:

Cable loss at 2 GHz: 4.80 dB
Connectors (4 × 0.15 dB): 0.60 dB
Surge arrestor: 0.40 dB
Total IFL loss: 5.80 dB

Maximum IFL Run Lengths

Cable Type	Practical Maximum	Notes
LMR-240	25–30 m	Short jumpers only
LMR-400	50–75 m	Standard for most commercial sites
LMR-600	100–130 m	Longer buildings, rooftop-to-basement
LMR-900	150–200 m	Large campus or remote antenna

For runs beyond 75m on LMR-400, move to LMR-600. For runs exceeding 150m, consider relocating the modem closer to the dish or using a fibre optic IFL.

DC Power and Voltage Drop on Long Runs

The IFL cable carries DC power from the modem to the LNB (typically 13V or 18V at up to 500 mA). LMR-400 centre conductor resistance: ~1.4 Ω per 100m. At 100m with 400 mA LNB current, voltage drop ≈ 0.56V — within tolerance for most systems. At 200m+ on LMR-400, verify LNB minimum operating voltage against actual delivered voltage before commissioning.

Weatherproofing the ODU Connection

Moisture ingress at the N-type connector where the IFL meets the LNB or BUC is one of the most common causes of IFL degradation in the GCC. Weatherproof every outdoor connection on the day of installation.

Terminate with an N-type crimp connector — see the LMR connector crimping guide for strip dimensions and tooling.
Mate the connector — N-type hex nut finger-tight plus a quarter turn with a 7/16″ spanner.
Wrap with self-amalgamating tape, starting below the connector body, 50% overlap, two full passes minimum.
Overwrap with PVC electrical tape for UV protection.
Secure the cable to the mount at regular intervals to prevent wind stress on the connector.

⚠️ Never use PVC tape alone. It lifts in heat, traps moisture, and degrades in direct sunlight. Self-amalgamating tape fuses into a waterproof seal — use it first, PVC over the top.

Common IFL Installation Mistakes

Mistake	Effect	Fix
Using 75Ω RG6 cable	Impedance mismatch, high attenuation, poor transmit performance	Use 50Ω LMR-series cable
Exceeding minimum bend radius	Kinked dielectric, local attenuation increase	Route through gentle curves; use conduit elbows
Unterminated cable ends during installation	Moisture ingress into dielectric	Cap unused ends with N-type terminator immediately
Outdoor connections not weatherproofed	Connector corrosion, rising insertion loss	Self-amalgamating tape every outdoor connection, same day
IFL run parallel to AC mains	RF interference pickup at L-band	Separate by 100mm minimum; use metal conduit

Sourcing IFL Cable in the UAE and GCC

For professional-grade IFL installations — Times Microwave LMR-400, LMR-600, with matched N-type crimp connectors — source from a distributor carrying genuine Times Microwave product. Off-brand cable with inconsistent impedance control introduces return loss problems that are difficult to diagnose without a VNA.

Bravo Satcom carries LMR cable and RF connectors suited to VSAT IFL installations across the GCC.

Summary

The IFL cable is a critical and often underspecified component in VSAT installations. Use 50Ω LMR-series cable — LMR-400 for runs up to 75m, LMR-600 beyond that. Calculate your total IFL loss including connectors and in-line components, weatherproof every outdoor connection, and verify DC voltage delivery on long runs.

LMR Cable for VSAT — Stocked in Dubai

LMR-400, LMR-600, and matched N-type connectors available for immediate supply across the UAE and GCC.

View Cable Range →

Cable

N-Type vs SMA vs BNC: Which RF Connector Do You Need?

Posted on July 16, 2026July 16, 2026 by admin

Pick the wrong RF connector and you create a mismatch that costs you signal, adds insertion loss, or fails mechanically in the field. N-Type, SMA, and BNC connectors are all used on 50Ω coaxial systems, they all look broadly similar to the uninitiated, and they are absolutely not interchangeable.

This guide covers the real differences — frequency limits, coupling mechanism, weatherproofing, size, and which connector belongs where — so you can make the right call on the next installation or procurement.

RF Connector Size Comparison — N-Type / SMA / BNC

N-Type

~23 mm hex

DC – 11 GHz

SMA

~8 mm hex

DC – 18 GHz

BNC

~15 mm bayonet

DC – 4 GHz

Relative sizes approximate — all 50Ω | bravosatcom.com

Quick Reference: N-Type vs SMA vs BNC

	N-Type	SMA	BNC
Impedance	50Ω (or 75Ω variant)	50Ω (standard)	50Ω or 75Ω
Usable frequency	DC to 11 GHz	DC to 18 GHz	DC to 4 GHz
Coupling	Threaded (hex nut)	Threaded (1/4″-36 UNS)	Bayonet (quarter-turn)
Size	Large	Small	Medium
Weatherproof	Yes (with boot/seal)	Not inherently	No
Common use	VSAT IFL, antenna feedlines, base stations	Lab/bench RF, GPS modules, indoor radio	Test equipment, video (75Ω), legacy radio
Cable range	LMR-195 to LMR-900	LMR-100 to LMR-400	LMR-200 to LMR-400
Mating cycles	~500	~500 (precision: 1,000+)	~500

N-Type Connector

N-Type (or Type-N) was developed in the late 1940s for military communications — a lineage that tells you something about its design priorities. It is a large, threaded, weatherproof connector built for outdoor and high-power RF applications. The hex coupling nut locks securely and resists vibration, which is why it is still the connector of choice for antenna feedlines and VSAT installations decades later.

N-Type Specifications

Parameter	Value
Impedance	50Ω (75Ω variant available — not compatible with 50Ω)
Frequency range	DC to 11 GHz
Voltage rating	Up to 1,000 V peak (varies by manufacturer)
Interface standard	MIL-STD-348, IEC 169-16
Coupling	Threaded — hex nut, ~5/8″-24 UNS
Body material	Nickel-plated or stainless steel
Weatherproofing	Yes — gasket seal on mated pair; add self-amalgamating tape for outdoor installs

Where N-Type Is Used

VSAT IFL cable runs — The intermediate frequency link between the ODU and modem operates at L-band (950–2,150 MHz). N-type is the standard interface at both ends. At 1–2 GHz the connector’s 11 GHz headroom is irrelevant, but its weatherproofing and robust coupling are not.

Antenna feedlines and tower work — Any run from a base station radio to an antenna uses N-type. The cable is exposed to wind, UV, and rain; the connector needs to be too.

LMR-400 and larger cables — The physical dimensions of N-type suit the larger LMR cable families. An N-type crimp connector on LMR-400 is the most common termination combination in outdoor RF installations in the GCC.

High-power RF — When you are driving a power amplifier into an antenna and the cable carries high power, N-type’s voltage rating and low contact resistance matter. SMA and BNC are not appropriate at high power levels.

Watch for this: The 50Ω and 75Ω versions of N-type look almost identical. The 75Ω centre pin is slightly smaller and will fit loosely in a 50Ω socket — potentially damaging it. Always verify impedance before mating.

SMA Connector

SMA (SubMiniature version A) was designed in the 1960s for microwave frequencies where physical size affects electrical performance. It is significantly smaller than N-type, uses a precision 1/4″-36 threaded coupling, and is rated to 18 GHz in standard form — making it the default for microwave and laboratory applications.

SMA Specifications

Parameter	Value
Impedance	50Ω
Frequency range	DC to 18 GHz (standard)
Frequency range (precision/3.5 mm)	DC to 26.5 GHz
Voltage rating	Up to 500 V
Interface standard	MIL-STD-348B, IEC 169-15
Coupling	Threaded — 1/4″-36 UNS hex nut
Body material	Brass (gold or nickel plated) or stainless steel
Weatherproofing	No — indoor/bench use by default

Where SMA Is Used

GPS and GNSS equipment — Nearly all GPS receiver modules and antennas use SMA or RPSMA. If you are running GPS cables to a VSAT terminal, modem, or asset tracking unit, you are dealing with SMA.

Indoor radio and wireless equipment — Small form-factor radios, modems, and routers in the 2.4 GHz, 5 GHz, and sub-6 GHz bands use SMA or RPSMA.

Test and measurement above 11 GHz — For measurements in Ku-band and above, SMA is the only option among these three connectors.

Two things to get right with SMA:
1. Torque: Finger-tight plus a quarter-turn with a 5/16″ spanner. Overtightening deforms the centre pin interface and kills return loss.
2. Standard vs reverse-polarity (RPSMA): In standard SMA the male plug carries the centre pin. In RPSMA the male plug has the socket. Same thread, different gender — forcing them together causes expensive damage.

BNC Connector

BNC (Bayonet Neill–Concelman) is quick to connect and disconnect — one quarter-turn to lock — which is its main advantage. It was widely used in legacy radio, test equipment, and broadcast video. The bayonet mechanism is fast but does not thread, so it cannot be torqued down and provides no environmental sealing.

BNC Specifications

Parameter	Value
Impedance	50Ω or 75Ω
Frequency range	DC to 4 GHz (practical limit for 50Ω)
Voltage rating	Up to 500 V
Interface standard	MIL-PRF-39012, IEC 169-8
Coupling	Bayonet — quarter-turn lock
Body material	Nickel-plated or gold-plated brass
Weatherproofing	No

Where BNC Is Used

Test equipment and oscilloscopes — BNC is the standard probe interface on oscilloscopes and most benchtop instruments below 1 GHz.

Broadcast video (75Ω) — The 75Ω BNC variant is the universal interface for HD-SDI video cabling. These look identical to 50Ω BNC but are not electrically compatible.

Network timing and 10 MHz reference signals — GPS disciplined oscillators (GPSDO) and network timing equipment typically output 10 MHz reference on BNC.

BNC limitations to know: The 4 GHz frequency ceiling is firm — do not use BNC at Ku-band frequencies. And 50Ω vs 75Ω BNC look identical and are the most commonly confused connector variants in the field. Check impedance before connecting to test equipment.

How to Choose: Decision Guide

By Application

Application	Connector
VSAT IFL run (L-band, ODU to modem)	N-Type
Satellite antenna feedline (outdoor)	N-Type
BUC or LNB RF port	N-Type
Base station antenna cable	N-Type
GPS antenna cable	SMA (or RPSMA — check equipment port)
Indoor radio / WiFi equipment	SMA or RPSMA
Microwave test and measurement	SMA
Oscilloscope / signal generator under 1 GHz	BNC
HD-SDI broadcast video	BNC 75Ω
Network timing / 10 MHz reference	BNC

By Frequency

Usable Frequency Range

N-Type

DC — 11 GHz

SMA

DC — 18 GHz (26.5 GHz precision)

BNC

DC — 4 GHz

04 GHz11 GHz18 GHz

bravosatcom.com

By Environment

Environment / Requirement	Best Choice
Outdoor / weatherproof required	N-Type (with boot or self-amalgamating tape)
Indoor bench / lab	SMA or BNC depending on frequency
Quick connect/disconnect cycles	BNC (bayonet is faster than threading)
Vibration-prone installation	N-Type or SMA (threaded coupling holds; bayonet can work loose)

Adapters: When You Have the Wrong Connector

Adapters between connector types are available and widely used, but they add insertion loss and reflections at higher frequencies. Keep adapters to one per signal path and do not use them on a connector you mate and unmate frequently — the wear happens on the adapter body.

Adapter	When You Need It
N-Type Female → SMA Male	SMA-tailed GPS antenna to N-type modem input
N-Type Male → BNC Female	Interfacing RF equipment to legacy test instruments
SMA Female → BNC Male	Lab bench bridging
N-Type 50Ω → N-Type 75Ω	Do not do this. Centre pin sizes differ; mating them can damage the socket.

What Cables Work With Each Connector

For VSAT and radio installations, the Times Microwave LMR series covers most cable runs. Here is how the connectors map to common LMR cables:

Cable	N-Type	SMA	BNC
LMR-100A	Not standard	✅ Common	—
LMR-195	✅ Available	✅ Common	✅ Available
LMR-240	✅ Common	✅ Available	✅ Available
LMR-400	✅ Primary	✅ Available	✅ Available
LMR-600	✅ Primary	—	—
LMR-900	✅ Primary	—	—

See the LMR-400 vs LMR-600 comparison for guidance on which cable to specify for a given IFL distance and frequency. If you are terminating N-type on LMR cable yourself, the step-by-step LMR crimp guide covers strip dimensions, tooling, and common mistakes.

Summary

N-Type, SMA, and BNC serve different roles in RF systems. N-Type is the outdoor, high-power, weatherproof choice for antenna feedlines and VSAT IFL runs. SMA handles microwave frequencies up to 18 GHz and belongs on indoor equipment, GPS cabling, and test benches. BNC is a legacy quick-connect connector suited to sub-4 GHz test equipment and broadcast video. Using the wrong one means you are either over-specifying and paying for it, or under-specifying and paying for it later in a fault call.

Need cables or connectors for your installation?

Bravo Satcom supplies RF coaxial cables and connectors — N-type, SMA, BNC — for VSAT, radio, and satellite installations in the UAE and GCC.

Browse RF Cables & Connectors →

Cable

How to Crimp LMR Connectors Correctly: Step-by-Step Guide

Posted on July 7, 2026July 7, 2026 by rai

A poorly terminated connector is the number one cause of signal degradation on an otherwise well-designed RF installation. LMR cables — particularly LMR-400 — are used on VSAT IFL runs, radio base station feedlines, and outdoor antenna installations where the connector is exposed to weather, vibration, and long-term stress. Getting the crimp right the first time saves you a troubleshooting call six months later.

This guide walks through the complete termination process for LMR-400 with an N-type crimp connector — the most common combination in VSAT and radio work — and covers the critical dimensions, tools, and mistakes that separate a reliable termination from a future fault.

LMR-400 Cable Preparation — Strip Stages

Jacket

Full length

Braid exposed

25.4 mm

(fold back)

Dielectric

12.7 mm

(stripped)

Centre pin

12.7 mm

exposed

Outer jacket (PE)

Braid + foil shield

Foam PE dielectric

Copper centre conductor

LMR-400 N-type crimp | Dimensions per Times Microwave spec | bravosatcom.com

What You’ll Need

Getting the right tools matters more than most people realise. Undersized or worn tooling causes crimp failures that are invisible to the eye but catastrophic for RF performance.

Tool	Purpose	Notes
Coax cable cutter	Clean, square cable cut	Never use wire cutters or a hacksaw — both distort the cable end
Rotary coax stripper	Strip jacket, braid, dielectric to exact dimensions	Set blade depths for LMR-400 specifically
Hex crimp tool + die	Compress ferrule onto braid	LMR-400 N-type typically requires 0.429″ hex die — check connector spec
Utility knife / deburring tool	Clean dielectric end, remove stray braid strands
Vernier calipers	Verify strip dimensions	Optional but recommended for critical installs
Multimeter	Post-crimp continuity test	Mandatory before putting the cable into service

Connector types: This guide covers crimp connectors — the most common in field work. Times Microwave also makes EZ-400 compression connectors (faster, single-action, requires the matching tool) and solder-type connectors. The cable prep dimensions are similar but confirm against your specific connector’s installation sheet.

Strip Dimensions for LMR-400 N-Type Crimp

These are the published Times Microwave strip dimensions for LMR-400 with a standard N-type crimp connector. Write these on your tool bag if you do this regularly.

Strip	Dimension	What It Exposes
Outer jacket removal	25.4 mm (1.00″)	Braid for fold-back
Braid fold-back point	12.7 mm (0.50″) from jacket end	Positions braid over ferrule
Dielectric removal	12.7 mm (0.50″) from fold point	Centre conductor
Centre conductor trim	Flush with connector pin face	Clean mating contact

Dimensions vary between connector manufacturers. Always cross-check against your specific connector’s installation sheet before terminating.

Step-by-Step: N-Type Crimp on LMR-400

Cut the cable square. Use a proper coax cutter. The cut must be clean, flat, and perpendicular. Inspect: jacket, braid, dielectric, and centre conductor must all be concentric and undamaged. Any burr or angle — cut again.

Slide on the crimp ferrule first. Before stripping anything, slide the crimp ferrule (small metal ring) onto the cable with the open end facing the cable end. This is the most commonly forgotten step. You cannot install it after the connector body is on.

Strip the outer jacket — 25.4 mm. Set your rotary stripper and rotate 2–3 times, then pull the jacket off cleanly. Inspect the braid — intact, no nicks, no cut strands. Remove any cut braid strands before proceeding.

Fold back the braid — at 12.7 mm. Comb the braid wires back evenly over the outer jacket. Spread uniformly around the full circumference — avoid bunching. Bunched braid concentrates crimp force on one side and reduces shield effectiveness.

Strip the dielectric — 12.7 mm. Remove foam dielectric to expose the centre conductor. The cut must be clean — no gouges or teeth marks on the copper. Even minor nicks increase PIM and create stress crack points under vibration.

Inspect before assembly. Blow out loose strands. Verify strip dimensions. Confirm no braid strands are on the dielectric. Check the centre conductor is round and undamaged. A 30-second inspection here prevents a re-termination in the field.

Install the connector body. Slide the connector body onto the cable. The centre conductor passes through the contact pin and protrudes slightly — trim flush with the pin face. The braid seats inside the connector’s braid seat area. Push fully home until it seats firmly.

Slide the ferrule into position. Slide the crimp ferrule forward until it butts against the rear of the connector body, sitting over the folded braid.

Crimp. Place the ferrule in the correct hex die. Close the handles with a single smooth, firm stroke until the ratchet releases. One complete ratchet cycle only — do not over-crimp (distorts the body) or under-crimp (ferrule slips).

Inspect the finished crimp. The ferrule should be uniformly hexagonal, no cracking or oval distortion. Firm tug — connector should not move. No braid strands protruding. Centre pin flush or just proud of the mating face.

Common Mistakes

Mistake	Consequence	Fix
Forgetting the ferrule before assembly	Must cut off connector and restart	Slide ferrule on as Step 2, every time
Nicked centre conductor	PIM, cracking under vibration, future open	Re-cut cable end and re-terminate
Stray braid strands on dielectric	Dead short centre-to-outer	Inspect under good light before inserting body
Wrong hex die size	Under-crimp — passes pull test, fails in field	Always match die to connector spec sheet
Bunched braid fold	Non-uniform crimp, reduced shield coverage	Comb braid evenly around full circumference
Centre pin too long	Bottoms out in mating connector, damages both	Trim flush with pin face
RG-8 connector on LMR-400	Wrong bore — mechanically and electrically poor	Always use connectors specified for LMR-400

Testing Your Termination

Every terminated connector should pass three checks before the cable goes into service:

① Visual Inspection

Ferrule uniformly hexagonal. No braid strands protruding. Centre pin flush. Connector firmly seated — no movement under hand tug.

② DC Continuity (Multimeter)

Centre pin to centre pin: continuity. Centre pin to outer body: open circuit. Any short = failed termination, re-terminate.

③ Return Loss / VSWR (if available)

Good LMR-400 termination: >25 dB return loss (VSWR <1.12:1) at 1 GHz. Worse than 20 dB (VSWR >1.22:1) indicates a problem.

Connector Compatibility Quick Reference

Always match the connector spec to your cable. Using an LMR-400 connector on LMR-600 is the most common ordering mistake.

LMR Cable	Standard Connector	Crimp Die (typical)	Notes
LMR-195	N-type, SMA, BNC	Per connector spec	Check braid OD matches
LMR-240	N-type, SMA	Per connector spec
LMR-400	N-type	0.429″ hex (typical)	Standard VSAT IFL
LMR-600	N-type, 7/16 DIN	Different body	Do NOT mix with LMR-400 connectors
LMR-900	N-type, 7/16 DIN	Large-body only	7/16 DIN preferred for high power

For a full cable series comparison, see the Times Microwave LMR Series guide.

FAQ

Can I reuse an LMR connector after removing it?
No. Once a crimp ferrule has been compressed, it cannot be re-used. Cut the connector off, re-prepare the cable end, and use a new connector.

What’s the minimum pull-out force for a properly crimped LMR-400 connector?
Times Microwave specifies approximately 45 kg (100 lbs) minimum pull-out strength for a correctly crimped LMR-400 N-type. If yours pulls off with hand force, the crimp failed.

Can I use a standard N-type connector meant for RG-8 on LMR-400?
No. LMR-400 has a different OD, braid construction, and dielectric. Using an RG-8 connector produces a mechanically and electrically poor termination. Always specify connectors made for LMR-400.

How do I know if my crimp tool die is worn?
A worn die produces ferrules that are out-of-round or show uneven hex faces. Check with calipers — if in doubt, replace the die. A worn die is cheaper to replace than a failed installation.

What’s the difference between silver and gold centre pins?
Silver-plated pins are standard for VSAT work. Gold pins appear in some lower-frequency or high-reliability connectors. For LMR-400 N-type in VSAT IFL work, silver-plated is correct.

Need LMR Cables and Connectors?

Bravo Satcom supplies Times Microwave LMR cables and N-type connectors for VSAT and radio installations across the UAE and GCC. We stock LMR-240, LMR-400, and LMR-600 with matching crimp and compression connectors.

→ Browse cable products → Request a quote

Cable

LMR-400 vs LMR-600 Coaxial Cable: Which Should You Choose?

Posted on July 2, 2026July 2, 2026 by admin

If you’re specifying cable for a VSAT antenna, two-way radio system, or any RF installation, you’ve likely hit the same question: LMR-400 or LMR-600? Both are Times Microwave Systems’ most popular flexible coax cables — low loss, UV-resistant, and built for outdoor use. The difference comes down to run length, signal loss budget, and how much space you have to work with.

This guide gives you the specs, the attenuation data, and a clear decision rule.

LMR-400 vs LMR-600 coaxial cable cross-section comparison drawn to scale — showing outer jacket, copper braid shield, aluminium tape, foam dielectric, and CCA center conductor for both cables — LMR-400 and LMR-600 cross-sections drawn to scale. The larger conductor in LMR-600 (0.176″ vs 0.108″) is the primary reason for its 35% lower signal loss.

Physical Specs: Side by Side

Property	LMR-400	LMR-600
Outer Diameter	0.405″ (10.3 mm)	0.590″ (15.0 mm)
Center Conductor OD	0.108″	0.176″
Center Conductor Material	Copper-clad aluminum	Copper-clad aluminum
Minimum Bend Radius	1.0″ (25 mm)	1.5″ (38 mm)
Weight	0.068 lbs/ft	0.131 lbs/ft
Impedance	50 Ω	50 Ω
Temperature Range	−40°C to +85°C	−40°C to +85°C
DC Resistance (center, per 1000 ft)	1.39 Ω	0.53 Ω

The bigger conductor in LMR-600 (0.176″ vs 0.108″) is the reason it outperforms LMR-400 on signal loss — lower DC resistance means less energy dissipated as heat per foot of cable.

Signal Attenuation: The Numbers That Matter

Attenuation is measured in dB per 100 feet — the lower the number, the better. Based on Times Microwave Systems official specifications:

Frequency	LMR-400	LMR-600	Improvement
100 MHz	~1.0 dB/100ft	~0.65 dB/100ft	~35% less loss
450 MHz (L-band)	~1.7 dB/100ft	~1.1 dB/100ft	~35% less loss
900 MHz	~2.6 dB/100ft	~1.7 dB/100ft	~35% less loss
1,500 MHz (VSAT IF)	~3.5 dB/100ft	~2.2 dB/100ft	~37% less loss
2,000 MHz	~4.2 dB/100ft	~2.7 dB/100ft	~36% less loss
2,500 MHz	~4.8 dB/100ft	~3.1 dB/100ft	~35% less loss

LMR-400 vs LMR-600 signal attenuation comparison chart — dB loss per 100 feet from 100 MHz to 2500 MHz, showing LMR-600 delivers approximately 35% less signal loss at all frequencies — LMR-600 consistently delivers ~35% less signal loss than LMR-400 at every frequency. The gap compounds over longer runs.

LMR-600 delivers roughly 35% less attenuation at all frequencies compared to LMR-400. That gap compounds quickly over longer runs.

Real-world example: A 30-metre (100 ft) run at 1,500 MHz (typical VSAT L-band IF):
LMR-400: ~3.5 dB loss | LMR-600: ~2.2 dB loss | Difference: 1.3 dB — meaningful when your modem’s link budget is already tight.

When LMR-400 Is the Right Choice

LMR-400 is the industry standard for good reason. Choose it when:

Run length is under 30 metres (100 ft). At this distance, the loss difference between LMR-400 and LMR-600 is minimal and doesn’t justify the cost or weight difference.

You need flexibility. With a 1.0″ minimum bend radius, LMR-400 is significantly easier to route through conduit, around corners, and in tight equipment racks.

Weight matters. At 0.068 lbs/ft (vs 0.131 lbs/ft for LMR-600), LMR-400 is nearly half the weight — important for rooftop or tower installations where cable tray loading is a concern.

Budget is a factor. LMR-400 is meaningfully less expensive per metre than LMR-600, making it the practical default for short-to-medium runs.

LMR-400 is the cable of choice for most VSAT antenna-to-modem runs, two-way radio base station feeders, and short rooftop drops.

When You Should Upgrade to LMR-600

Move to LMR-600 when signal loss budget is tight:

Run length exceeds 30–40 metres (100–130 ft). Beyond this point, the accumulated loss in LMR-400 starts eating into your link margin — especially at higher frequencies (Ku-band IF at 950–1,450 MHz and above).

High-power applications. LMR-600’s larger conductor handles more RF power before thermal losses become a concern — relevant for high-wattage BUC installations where every dB matters.

You’re running at 1 GHz or above over long distances. Attenuation increases with frequency. A 60-metre Ku-band IF run at 1,500 MHz in LMR-400 loses ~7.0 dB. In LMR-600, the same run loses ~4.4 dB. That 2.6 dB difference can be the margin between a stable link and intermittent dropouts.

Maximum cable run distances: LMR-600 supports antenna cable runs up to 400 ft (120 m) without inline amplification. LMR-400 is typically limited to around 200 ft (60 m) before loss becomes unacceptable at Ku-band frequencies.

Cost and Installation

LMR-600 typically costs 30–50% more per metre than LMR-400. It’s also heavier and stiffer, requiring more careful routing and stronger support hardware — cable trays and support clamps need to account for the increased weight (0.131 lbs/ft vs 0.068 lbs/ft).

Connectors are cable-specific — don’t mix LMR-400 and LMR-600 connectors. If you’re terminating in the field, LMR-600 requires a larger stripper tool and more robust crimp or compression fittings. Both cables accept Times Microwave Systems EZ push-on connectors, which eliminates soldering on site.

Decision guide flowchart for LMR-400 vs LMR-600 cable selection — three questions: run length over 30m, frequency above 1 GHz, or high-power BUC system — Answer three questions — run length, frequency, and power — and you have your cable choice.

The Simple Decision Rule

Under 30 m and below 1 GHz? → LMR-400.

Over 30 m, or high frequency, or high-power BUC? → LMR-600.

If you’re ever in doubt, calculate your total path loss budget: add up the cable loss, connector insertion loss (~0.1 dB per connector), and any other passive components. If the total pushes you within 1–2 dB of your link margin, upgrade to LMR-600.

Frequently Asked Questions

Can I mix LMR-400 and LMR-600 in the same run?

Yes, but only with proper barrel adapters. Keep the LMR-600 section on the longer runs and use LMR-400 for short flexible jumpers at each end.

Are LMR-400 and LMR-600 connectors interchangeable?

No. Each cable requires its own connector size. LMR-400 and LMR-600 both accept N-type, TNC, and SMA connectors — but in their respective sizes. They are not physically compatible with each other.

Which cable is better for outdoor VSAT installations in hot climates?

Both use a black UV-protected polyethylene jacket rated for −40°C to +85°C, making them suitable for the UAE and GCC climate. For buried runs, specify LMR-DB (watertight/flooded version) from Times Microwave Systems.

Does LMR-600 need different support hardware?

Yes. At 0.131 lbs/ft, LMR-600 requires stronger cable trays and more frequent support points — approximately every 18–24 inches on horizontal runs vs every 24–36 inches for LMR-400.

Shop LMR Coaxial Cable at Bravo Satcom

Bravo Satcom stocks Times Microwave Systems LMR coaxial cable including LMR-400 and LMR-600, along with the full range of N-type, TNC, SMA, and BNC connectors for both cable types. Available for delivery across the UAE and GCC.

Contact us at sales@bravosatcom.com or +971 55 541 5892 for cut lengths, bulk pricing, or pre-terminated assemblies.

Cable

LMR240 vs RG58 Coaxial Cable Comparison

Posted on July 16, 2025July 16, 2025 by rai

16
Jul

LMR240 vs RG58 Coaxial Cable Comparison

Feature	LMR240	RG58
Impedance	50 Ohm	50 Ohm
Outer Diameter	~6.1 mm	~4.95 mm
Loss per 100ft @ 100 MHz	~4.2 dB	~7.9 dB
Shielding	Foil + 90% Braid	~70% Braid Only
Flexibility	Semi-flexible	More flexible
UV Resistance	Good	Varies
Typical Use	Wi-Fi, Cellular, GPS, Low-loss runs	Short HF/VHF, General radio
Max Frequency	Up to 6 GHz (practical)	Up to ~1 GHz (practical)
Cost	Slightly higher	Cheaper

When to Choose LMR240

LMR240 is ideal for longer runs, higher frequencies, and outdoor installations where low loss and good shielding matter.

When to Choose RG58

RG58 works well for short cable runs at lower frequencies where flexibility and lower cost are more important than ultra-low loss.

Cable

Belden RG6 Cable

Posted on July 16, 2025July 16, 2025 by rai

Belden RG6 Cable | High-Quality Coaxial Cable for TV, Satellite & Broadband

Looking for a reliable RG6 cable? The Belden RG6 Coaxial Cable is trusted worldwide for delivering clear signals and minimal interference. Perfect for Cable TV (CATV), satellite TV, CCTV systems, and high-speed internet, Belden RG6 ensures top performance for both residential and commercial installations.

Why Choose Belden RG6 Coaxial Cable?

Superior Signal Quality: 75-ohm impedance with excellent shielding for minimal signal loss and interference.
Durable and Versatile: Solid copper or copper-clad steel conductor, foamed PE dielectric, and dual or quad shielding for maximum protection.
Flexible Installation: Available in plenum-rated, riser-rated, or direct burial versions — ideal for indoor and outdoor use.
Trusted Worldwide: Belden is an industry leader known for premium quality coaxial cables.

Belden RG6 Cable Specifications

Feature	Details
Impedance	75 Ohms
Frequency Range	Up to 3 GHz
Conductor	Solid Bare Copper / CCS
Shielding	60% braid + 100% foil or quad shield
Jacket Material	PVC, Plenum (CMP), or Riser (CMR)
Certifications	UL Listed, RoHS compliant
Applications	CATV, Satellite TV, CCTV, Internet

Popular Belden RG6 Cable Models

Belden 9116
Belden 7915A
Belden 1189A

Order Belden RG6 Cable Now

Upgrade your signal transmission with premium Belden RG6 Coaxial Cable. Whether you’re wiring your home theater, satellite dish, or CCTV system, you’ll get reliable performance that lasts.

Shop Belden RG6 Coaxial Cable Now

Cable

RG223 vs LMR 240: Exploring the Differences in Coaxial Cables

Posted on November 4, 2024November 4, 2024 by rai

When it comes to coaxial cables, two popular options are the RG223 and LMR240. These cables are widely used in various applications, from radio frequency (RF) communication to video transmission. In this article, we’ll delve into the key differences between these two coaxial cable types, highlighting their unique features, performance characteristics, and suitable applications.

Comparing RG223 and LMR240 Coaxial Cables

Specification	RG223	LMR240
Impedance	50 Ohms	50 Ohms
Outer Diameter	0.216 inches (5.49 mm)	0.240 inches (6.10 mm)
Attenuation at 100 MHz	0.39 dB/m	0.33 dB/m
Attenuation at 1 GHz	1.29 dB/m	1.01 dB/m
Attenuation at 3 GHz	2.30 dB/m	1.82 dB/m
Minimum Bend Radius	20 mm	25 mm
Maximum Operating Voltage	1500 V	1500 V
Temperature Range	-55°C to +200°C	-65°C to +200°C

RG223 Coaxial Cable

The RG223 coaxial cable is a type of 50-ohm cable that is widely used in various applications, including radio frequency (RF) communications, video transmission, and test equipment. It is known for its reliable performance and ruggedness, making it a popular choice in harsh environments.

One of the key features of the RG223 is its small outer diameter, which makes it highly flexible and easy to route in tight spaces. This cable is often used in applications where space is limited, such as in-vehicle installations or portable equipment.

LMR240 Coaxial Cable

The LMR240 coaxial cable is another 50-ohm option that is designed for superior performance and reliability. This cable is often used in applications that require low signal loss, such as cellular networks, satellite communications, and high-frequency radio systems.

Compared to the RG223, the LMR240 has a slightly larger outer diameter, which provides better shielding and lower attenuation. This makes it a more suitable choice for longer cable runs or applications where signal integrity is of utmost importance.

Cable

RG58 vs. LMR400: Choosing the Right Coaxial Cable for Your Needs

Posted on October 26, 2024October 26, 2024 by rai

When it comes to coaxial cables, two of the most common types are RG58 and LMR400. While they may seem similar, these cables have distinct characteristics that make them suitable for different applications. Understanding the differences between RG58 and LMR400 is crucial for anyone working with or selecting the right cable for their needs.

Characteristic Comparison

Characteristic	RG58	LMR400
Impedance	50 ohms	50 ohms
Diameter	0.195 inches	0.405 inches
Attenuation	Higher	Lower
Flexibility	More flexible	Less flexible
Cost	Less expensive	More expensive

Application Differences

Application	RG58	LMR400
Usage	Low-power, short-distance (e.g. amateur radio, CCTV, jumper cables)	High-power, long-distance (e.g. cellular networks, satellite communications, military communications)

By understanding the key differences between RG58 and LMR400 cables, readers can make informed decisions when selecting the appropriate cable for their specific needs, whether it’s for a home wireless network or a complex communication system.