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 installation of a smaller diameter cable, with the low attenuation and shielding advantages of a larger cable. Unlike larger cables, L-240 can pass 5G and mmWave frequencies up to 31 GHz.
The cable is a mid-size with an overall diameter of 6.10 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 years.
Terminating L-240 coaxial connectors requires a 6.48 mm (.255") hex die.
RF Specification
Attenuation Table
| Frequency | Attenuation |
|---|---|
|
1000 MHz
|
0.26 dB/m
|
Physical Specification
Cable Layers
| Layer | Diameter | Materials |
|---|---|---|
|
Inner Conductor
|
1.42 mm
|
|
|
Dielectric
|
3.81 mm
|
|
|
Outer Conductor
|
3.94 mm
|
|
|
Outer Conductor
|
4.52 mm
|
|
|
Outer Jacket
|
6.10 mm
|
Manufacturer Variations
| Illustration | Manufacturer | Series | Full Name |
|---|---|---|---|
|
Times Microwave | LMR-240 | Times Microwave LMR-240 Flexible Low Loss Communications Coax |
|
Powertec | PTL-240 |