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 years.

Several variations are available denoted by suffixes such as -FR for Fire Retardant, -DB for Direct Burial, and -UF for Ultra-Flex.

L-300 cables are occasionally referred to as LMR-300, although the LMR prefix refers to the international trademark of Times Microwave. Each manufacturer will typically use a three letter prefix to reference their own similar variation, such as CNT-300 (for Commscope), KSR-300 (for KingSignal), and so forth.