Description
RG58 Antenna Extension Cable – 5m, PL-259 to SO-239 (50 Ohm)
A 5 metre RG58 coaxial extension cable with PL-259 male plug on one end and SO-239 female socket on the other. Used to extend an existing antenna lead, connect a radio to a bulkhead or patch panel fitting, or add length between a gutter mount or roof mount antenna and the radio unit inside the vehicle.
Where This Cable Is Used
The PL-259/SO-239 pairing is the standard UHF connector system used on virtually all NZ-market UHF CB radios, VHF mobile radios, and many FM antennas. This cable slots between any PL-259 terminated antenna cable and an SO-239 socket — on the radio body, a patch panel, a through-hull bulkhead fitting, or a splitter.
Common applications include extending the antenna lead on a UHF CB installation where the standard lead doesn’t reach from the antenna mount to the radio position, adding length when relocating a radio deeper into a motorhome or campervan conversion, connecting a roof or gutter mount antenna to an interior bulkhead socket, and patching between two segments of coaxial run.
Cable Specification
Type: RG58 coaxial Impedance: 50 ohm — correct for UHF CB (477MHz), VHF (144/430MHz), and standard mobile radio applications Length: 5 metres Connector 1: PL-259 male (plugs into SO-239 socket on patch panel, bulkhead, or splitter) Connector 2: SO-239 female (accepts PL-259 male plug from antenna lead or radio) Shielding: Single braid
RG58 vs RG8 / LMR400
RG58 has a higher loss per metre than thicker cables like RG8 or LMR400, but at 5 metres and UHF CB frequencies (477MHz) the signal loss is minimal and acceptable for all standard vehicle installations. RG58 is the correct, practical choice for in-vehicle cable runs up to 10 metres. For longer runs or high-power applications, a lower-loss cable is recommended.
Suitable For
UHF CB radio installations (Uniden, GME, Oricom), VHF mobile radio, FM aerial extensions, and any 50 ohm coaxial application using PL-259/SO-239 connectors.
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