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.
August 28th, 2010 on 2:40 pm
Hi Bret,
Came across your website in my search for FTM-10 info.
Have you had any experience in adding PTT to the radio via the rear 7 pin interface connector?
I have ordered the cloning cable for the VX-8 (as the CT-11M is not available here in Australia…grrr!)
Good luck with your intergalactic quest!!!
Cheers,
Chris
September 9th, 2010 on 2:38 pm
I have not really used an FTM-10 so it is difficult for me to comment. I have also gotten busy and havent touched this in a long time. I probably wont for at least a month either.
December 30th, 2010 on 9:21 am
Did you ever determine if the CT-11M gave access to a CAT protocol?
January 8th, 2011 on 11:46 am
No I never did, I got sidetracked and have not done much with the radio lately.
March 22nd, 2011 on 2:54 pm
Hi, I know this may be a bit off-topic, but I managed to coax out a firmware image for the FTM-350R, which is very similar to the VX-8R (which I also own.) You can find the relevant files on WWDX. Thanks.