1. Otis413

    EFJ Challenger info?

    I recently acquired two EF Johnson Challenger radios, a 7164 8ch 45W VHF model, and what appears to be a "Mix and Match" 7186, 99ch 15w UHF. I also found the software online. Info on these radios online seems to be a bit sparse, I found a little on Repeater Builders, some on and...
  2. kc8mln

    EF Johnson Challenger Narrowbanding compadable?

    Does anyone know if the EF Johnson Challenger series of mobile radios are narrowband capable?