VX-8r data jack pinout
by trixter on Aug.31, 2009, under Yaesu VX-8r
In my never ending quest to rule the galaxy, I have gotten the pinout information for the VX-8r radio. While it is pin compatible with the FTM-10 radio, it is not identical. Minor differences do exist.
Using the CT-M11 cable you can interface this to anything you may need. I will modify my FT-897 PTT control circuit for this radio as well as future exploration into the radio’s capabilities in terms of cloning the radio, and seeing if there are any secret commands to control the radio similar to the CAT interface. Getting this pinout was only the first step.
According to Vertex standard the pinout is as follows (for the CT-M11 cable):
| Pin No. | Wire Color | FTM-10 Series | FTM-10SR/SE only | VX-8 Series |
|---|---|---|---|---|
| 1 | Orange | MIC IN | LINE-IN (L-CH) | MIC/PTT |
| 2 | Gray | 5 V | NC | 3.3V |
| 3 | Brown | SP OUT(L-CH) | SP OUT(L-CH) | SP OUT |
| 4 | Green | SW1 | SP GND | GPS TXD (CONTROL) |
| 5 | Blue | SW2 | LINE-IN (R-CH) | GPS RXD (NMEA) |
| 6 | Red | GND | LINE-IN (GND) | GND |
| 7 | Black | SP OUT (R-CH) | SP OUT (R-CH) | SP SEL (CONTROL) |
If you connect a 22k ohm resistor between pin 7 and pin 2 the internal speaker will be disabled.
