Description
LMR-240 is a 50 Ω coaxial cable type manufactured by Times Microwave. Within the LMR series 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.
Flexibility and bendability are hallmarks of the LMR-240 cable design. The flexible outer conductor enables the tightest bend radius available for any cable of similar size and performance. Low Loss is another hallmark feature of LMR-240. Size for size LMR has the lowest loss of any flexible cable and comparable loss to semirigid hard-line cables.
RF Shielding is 50 dB greater than typical single shielded coax (40 dB). The multi-ply bonded foil outer conductor is rated conservatively at > 90 dB (i.e. >180 dB between two adjacent cables). LMR-240 cables designed for outdoor exposure incorporate the best materials for UV resistance and have life expectancy in excess of 20 years.
Several variations are available denoted by suffixes such as -FR for Fire Retardant, -DB for Direct Burial, and -UF for Ultra-Flex.
RF Specification
Attenuation Table
| Frequency | Attenuation | Power (CW) |
|---|---|---|
|
900 MHz
|
32.4 dB/m
|
0.2 W
|
|
1800 MHz
|
35.6 dB/m
|
0.18 W
|
|
2500 MHz
|
42.4 dB/m
|
0.15 W
|
|
5800 MHz
|
66.8 dB/m
|
0.1 W
|
Physical Specification
Cable Layers
| Layer | Diameter | Materials |
|---|---|---|
|
Inner Conductor
|
1.42 mm
|
|
|
Dielectric
|
3.81 mm
|
|
|
Outer Conductor
|
3.94 mm
|
|
|
Shielding
|
4.52 mm
|
|
|
Outer Jacket
|
6.10 mm
|
Downloadable Resources
Times Microwave Systems (TMS) is a subsidiary of Amphenol Corporation (NYSE: APH) and part of the Amphenol Military and Aerospace (AMAO) division. Times design and manufacture high performance coaxial cables, connectors, and cable assemblies for military, aerospace, telecommunications, industrial RF, and microwave applications. For over 70 years Times Microwave have been committed to innovation ...