The Mentor Radio Model PA-25 is an aviation band VHF external amplifier. Increases transmitted radio frequency power from any base radio up to a maximum of 25 watts.  Extends the range of your existing base station without buying a new radio. Adding a PA-25 is an excellent choice for users of M15-B or any low power base radios who need more power.


  • 10 dB gain
  • Operates from standard 28VDC
  • Connect to M15-B base radio output connector with optional adapter cable
  • Includes transmit/receive (T/R) switch
  • Optional outputs for power control


  • RF adapter cable to connect to your radio. Please specify radio connector when ordering.
  • For customers who don’t have a 28VDC power supply available, see Mentor Radio’s power supply Model PS-320.