Converting Dash Mount EF Johnson Challenger Radios to Remote Mount

the Ef johnson Challenger series radios are quite flexible for older technology. You can take a dash mount radio and convert it to remote mount if you have the remote head and junction box.

These are connected to the junction box via a n 8 pin modular connector, that resembles an RJ45, but its just a little smaller. You can easily file down the sides of an RJ45 and make it fit perfectly.

• Connections
  • 1 - (A) Orange - Receive Data
  • 2 - (1) Ground Braid
  • 3 - (2) Red - Mic audio
  • 4 - (3) Green - Power Control
  • 5 - (4) Yellow - PTT
  • 6 - (5) Blue - 13.4 volt source
  • 7 - (6) White - Receive Audio
  • 8 - (B) Brown - Transmit Data

Challenger Remote Components

although the image is clearly of an 86xx series, the remote heads are the same

Choosing the Proper Radio