en
LMR-240 is a low-loss, ultra-flexible, double-shielded coaxial cable suitable for long-distance signal transmission both indoors and outdoors, offering excellent balance between performance and flexibility. The overall diameter measures approximately 6.10mm, with an inner conductor of 1.42mm, a foamed polyethylene insulation layer of 3.81mm, and a bare copper conductor. The outer conductor is a double-shielded braid made of aluminum and tinned copper, and the sheath is made of anti-aging PE. The dual-layer shielding design combines flexibility with interference resistance, and the outer sheath provides a protection level of IP67
| Structure parameters | ||
| Item | Material | Diamenter (mm) |
| Inner Conductor | Bare copper wire | 1.42 |
| Dielectric | EPE | 3.81 |
| Outer Conductor | Tin plated copper wire weaving | 4.52 |
| Sheath | PE | 6.1 |
| Performance parameters | ||
| Capacitor | 79.4pF/m | |
| Impedance | 50ohm | |
| Transmission rate | 84% | |
| Internal conductor DC resistance | 11.43 ohm/m | |
| Outer conductor DC resistance | 13.40 OHM/m | |
| Maximum operating voltage | 35000Vrms | |
| Maximum operating frequency | 56000MHz | |
| Working temperature range | -40～+80℃ | |
| Bending radius | 30mm | |
| ROHS/CE/FCC | YES | |
| Frequency | 30MHz | 4.4dB/m |
| 50MHz | 5.7dB/m | |
| 150MHz | 9.9dB/m | |
LMR240 Performance Impedance: Standard 50 Ω, compatible with most communication equipment interfaces,
Attenuation value: lower than LMR-195 of the same series, but higher than LMR-400 (about 6.1dB/30m at 900MHz),
Signal characteristics: propagation speed of 84%, delay of 3.97ns/m, capacitance value of 79.4pF/m,
Shielding effectiveness:>90dB, effectively suppressing high-frequency electromagnetic interference,
Weather resistance: working temperature -40 ° C~85 ° C, suitable for harsh environments such as exposure to sunlight, rain and snow,
Line loss control: inner conductor line resistance of 10.5 Ω/km, outer conductor 12.8 Ω/km,
Deployment advantage: compared to thicker cables (such as LMR-400), it is easier to bend and wire through pipes
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