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Loss is a length multiplier, so a 200 ft length would have twice the loss shown above and a 50 ft length would have half the loss. This multiplier factor is why you should keep cable installation lengths between radios and antennas as short as practical!
Low -loss, gas injected foam polyethylene .405” high-flex PVC jacket Low -loss foam dielectric Braided copper shield Low loss, gas injected foam polyethylene dielectric Very flexible; ideal for short, in-shack jumper cables.242”Type II jacket is non contaminating and UV-resistant Direct-bury Attenuation/ 100 ft. Power Rating
Suitable for VHF (~1.5dB loss per 100 feet at 146 MHz). The flexible types (9913F and LMR-400UF) are preferred, particularly for rotatable antennas. However, stranded center conductors have a little higher loss than solid ones.
Properties for popular coaxial cables are listed below including Type, Z0, Dielectric, Capacitance, dB.
Coaxial Cable Characteristics and Data Used in Amateur Radio Stations. It is of importance when making decisions about getting the right coax for your Ham Station to understand that there are trade-offs that have to be considered between transmitter power, antenna gain, coax loss, erp, and your total Ham Station system performance.
Amphenol RF offers a broad range of connectors designed to terminate to many commercially available coaxial cable types. The following cable guide lists standard flexible, Low Loss, semi-rigid and conformable, micro-coaxial, and corrugated cable as well as associated product links.
HELIAX® Coaxial Cable Selection Guide - 50-ohm, Foam Dielectric. Attenuation, dB/100 ft (dB/100 m) Standard conditions: VSWR 1.0; ambient temperature 20°C (68°F). Average Power Rating, kW Standard conditions: VSWR 1.0; ambient temperature 40°C (104°F); inner conductor temperature 100°C (212°F); no solar loading.
