Laird brand external magnetic mount antenna kit for EF Johnson 51SL portable radios. Substantially extends the TX & RX range of the 51SL by replacing the rubber duck antenna with a 23" external, spring loaded, gain antenna that is tunable between 132-525MHz. Includes antenna, magnetic NMO mount with rubber cover, 20 foot cable and quick disconnect BNC adapter for EF Johnson 51SL radios. Requires metal ground plane.
VHF High-Band & UHF
1/4 Wave Broadband
2:1 Max At Resonance
-45° to 85° C
Cable: BNC Female - Adapter: MX (EF Johnson 51SL) to BNC Male