This document has been composed to provide a industry reference for the major coaxial cable groups and their nominal specifications. Cable grouping is important to ensure compatibility across different manufacturers. Rather than introduce a brand new cable type with unique dimensions, RF cable manufacturers typically produce their cable to align with a well known cable group. This ensures connectors from one company can be used on another company's cable.

This can sound confusing, so to help illustrate the point consider the following example. Powertec produce coaxial cables such as our PTL-240, which sits alongside others including CommScope CNT-240, Telegärtner G30, Times Microwave LMR-240, and many others, who all manufacture an "L-240" group cable.

Cable Groups by Attenuation (dB/m)

Cable Groups by Max. Frequency

Explore RF Cable Groups
Illustration Group Description Max. Freq. Att. @ 1 GHz
LMR-100 coaxial cable

L-100

L-100 coaxial cable is designed as a high performance drop-in replacement for RG-174 and RG-316. The double shielded outer conductor provides exceptional RF shielding exceeding 90 dB, and 2.79 mm overall diameter makes the cable type suitable for high frequency microwave applications up to 63 GHz ...

63 GHz 0.78 dB/m
LMR-195 coaxial cable

L-195

L-195 was designed as a high performance drop-in replacement for RG-58, RG-122, RG-303, and RG-142. The double shielded outer conductor provides excellent RF shielding exceeding 90 dB, and its PE jacket provides for a service life in excess of 20 years.

L-195 cables are occasionally referred to as ...

41 GHz 0.39 dB/m
LMR-200 coaxial cable layers

L-200

L-200 was as a high performance drop-in replacement for L-195. The cable was designed with a marginally larger center conductor than RG-58 and LMR-195 to provide reduced attenuation, while still maintaining a 4.95 mm overall diameter. The double shielded outer conductor provides exceptional RF ...

36 GHz 0.34 dB/m
LMR-240 coaxial cable layers

L-240

L-240, sometimes referred to as LMR-240, is a low loss coaxial cable with a medium sized 6.10 mm outer diameter. This series is without a doubt the most popular choice of RF cable, due to its efficient compromise between performance and cost. 

L-240 cable provides the flexibility and easy ...

31 GHz 0.26 dB/m
LMR300 coaxial cable layers

L-300

L-300 is a 50 Ω mid-size coaxial cable with an overall diameter of 7.62 mm, providing a compromise between form-factor/bend radius, and attenuation/power handling. The double shielded outer conductor provides exceptional RF shielding exceeding 90 dB, and PE jacket for a service life in excess of 20 ...

24.5 GHz 0.21 dB/m
LMR400 coaxial cable layers

L-400

L-400, sometimes referred to as LMR-400, is a low loss coaxial cable with a 10.16 mm outer diameter. Supporting frequencies beyond 6 GHz it's a popular choice for entry- to intermediate-level wireless communications systems. Due to its braided outer conductor the cable cannot be used for PIM ...

16.2 GHz 0.14 dB/m
LMR500 coaxial cable layers

L-500

L-500 is a heavy duty 50 Ω full sized coaxial cable with an overall diameter of 12.7 mm and finds its use as a general purpose feeder cable for SCADA, WiFi, UHF, and other telemetry systems, although less popular than their L-400 and L-600 counterparts. The double shielded outer conductor provides ...

12.6 GHz 0.11 dB/m
LMR600 coaxial cable layers

L-600

L-600 is a heavy duty 50 Ω full sized coaxial cable with an overall diameter of 14.99 mm and finds its use as a heavy duty feeder cable for SCADA, broadcast, cellular, UHF, and other telemetry systems. L-600 is occasionally used as a flexible drop-in replacement for corrugated half inch cables such ...

10.3 GHz 0.09 dB/m
0.81 mm mini coaxial cable layers

0.81 mm Mini-Coax

0.81 mm mini-coaxial cable is typically found inside devices that require high-frequency transmission up to 6 GHz, such as in cellular modems and GNSS transceivers. It is also used in medical equipment and military installations due to its compact size and reliable performance. The cable is most ...

6 GHz 2.65 dB/m
1.13 mm Mini Coaxial microcoaxial cable

1.13 mm Mini-Coax

Microcoaxial cables with a diameter of 1.13mm are typically found inside high-frequency RF devices. These applications can be found in various industries, including telecommunications, aerospace, medical, and automotive. The compact size and flexibility of these cables make them ideal for use in ...

6 GHz 2.30 dB/m
1.37 mm Mini Coaxial microcoaxial cable

1.37 mm Mini-Coax

Micro-coaxial cables measuring 1.37mm (outer diameter) are typically utilised internally within RF devices. These include but are not limited to, cellular and GPS modules, and WLAN devices. Due to their small size, these cables are also suitable for use in miniature electronic devices such as ...

6 GHz 1.60 dB/m
0.034" semi rigid coaxial cable layers

0.034 Semi-Rigid

0.034" Semi-Rigid coaxial cable is a MIL-DTL-17 qualified series providing mode free operation to 155 GHz. The sold tin-plated copper tube effectively provides 100% RF shielding with shielding effectiveness exceeding 110 dB, and enables the dielectric and center conductor to remain precisely spaced ...

155 GHz 1.59 dB/m
0.047 semi flexible RF cable with no jacket

0.047 Semi-Flex

0.047" Semi-Flexible coaxial cable is a formable, microwave grade with mode free operation to 109 GHz. The tin-soaked copper braid provides near 100% RF shielding and the malleable nature of the outer jacket eliminates solder joint failures and allows bends immediately behind the fillet. Standard 0 ...

109 GHz 1.12 dB/m
0.047 inch semi rigid coaxial cable layers

0.047 Semi-Rigid

0.047" Semi-Rigid coaxial cable is a MIL-DTL-17 qualified series providing mode free operation to 109 GHz. The sold tin-plated copper tube effectively provides 100% RF shielding with shielding effectiveness exceeding 110 dB, and enables the dielectric and center conductor to remain precisely spaced ...

109 GHz 1.13 dB/m
0.063" semi-rigid coaxial cable layers

0.063 Semi-Rigid

0.063" Semi-Rigid coaxial cable is a MIL-DTL-17 qualified series providing mode free operation to 85 GHz. The sold tin-plated copper tube effectively provides 100% RF shielding with shielding effectiveness exceeding 110 dB, and enables the dielectric and center conductor to remain precisely spaced ...

85 GHz 0.80 dB/m