AD-21/3108 — Low-profile VHF Monopole Antenna

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AD-21/3108 is a family of low-profile VHF omni-directional monopole antenna covering 30-108 MHz for mobile comms up to 25 W CW on manpacks, affixed to vehicles or by magmount.

AD-21/3108 is a wideband low-profile monopole mobile antenna covering frequency range from 30 to 108 MHz, intended for use with portable and mobile radios. The omnidirectional antenna radiator is composed of a whip made of special strong and flexible stainless steel whip with spring and the matching transformer above an N male coaxial connector. The radiator and the matching unit are painted with UV protective polyurethane black paint.

The antenna radiator can be attached directly to the portable radio; or it can be used with the magnetic mount base ADM-21/N or fixed base ADN-21/N, both have integrated 4m coaxial cable terminated with a FME female socket. Various adapters from FME to N, BNC, UHF, SMA, etc. are available on request.


  • AD-21/3108-N: wideband monopole antenna for portable radio devices with N male connector
  • AD-21/3108-F: AD-21/3108-N with the fixed mount ADN-21/N
  • AD-21/3108-M: AD-21/3108-N with the magnet mount ADM-21/N 


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