Connecting Vertex/Yaesu VX-146 to Autocom
Posted on 2007-08-08 08:09:16 EEST.
I recently got a new VX-146 radio and needed to get it working with my Autocom unit
- Get a proper connector lead, I stronly suggest getting one mean with this radio with (thumb)screw locking, the connector is "standard" 4-pole 3.5mm jack but on the radio end it's recessed a bit so if using generic part you may need to use destructive editing to make it fit properly (and unless you hot-glue it to place water will leak inside you precious radio since it doesn't seal properly).
- Get 5-pole 60° DIN connector (references to positions on this will be on the solder side).
- Get 1-2k resistor, small enough to fit inside your DIN connector housing
- Establish which lead corresponds to which pole, I use pole numbers counting from the tip towards base, so pinout is as follows: tip is pole #1 and base is pole #4. The signals are as follows: #4 is shield/ground, #1 is speaker and #3 is mic.
- Solder ground signal (#4) to 12:00
- Solder speaker signal (#1) to 14:00 (the Autocom provided cable [at least for Kenwood TK31xx radios] has a small capacitator here to filter DC, not actually needed here or there)
- Solder mic signal (#3) to 10:00
- Solder the resistor across 10:00 and 16:00
- Test and if you realize you read the DIN clock incorrectly, reverse connections accordingly