That pin varies between 3.26 to 3.29 when dtmf tone sent. I checked it on the pi as well as the irlp board it was the same on both ends.

I don't know that radio, just trying to make sure it wasn't one of the Chinese radios that have problems. Mick - W7CAT Node 3464

Yaesu FT1XD

The first binary bit D0 seems to be stuck in the "asserted" condition. I'm wondering if the wire between the pi and the irlp interface board is broken According to Dave Cameron's diagram D0 is pin

I don't think I asked this before, even though I was going to, what are you using for a radio to send the DTMF tones??? Mick - W7CAT Node 3464

Well I tried a different raspberry 4 did an install all works except the dtmf tones are incorrect and the same as before Pressed : Seen 1:nothing 2:3 when released 1 3:3 when released 1 4:5 when

Yes. If you are watching readinput it should show whichever tone (digit) you send except for "D". Mick - W7CAT Node 3464

it looks like the reinstall fixed the audio issue. should the dtmf tones match what is pressed on the radio?

There doesn't need to be, all that is being done is the "on hook" of the microphone is being grounded through the microphone cable. I have taken several microphones and jumpered a wire

I don't see any issue with the wiring. Mick - W7CAT Node 3464

yes

William a silly question perhaps, but if the mic needs to be attached to a 'hangup plate' is said plate earthed to radio chassis? John @ 6163

The radio connections are as follows Radio Irlp board Pin 2 9 Pin 3. 2 Pin 7. 6 Pin 8. 7 Pin 11. 8 I have a 10uf capacitor on pin 9 irlp to pin 2 radio. I

I would like to know exactly what connections you are using on the radio and on the IRLP board and what is connected to what. It shouldn't be complicated. Keep in mind it doesn't

Hi William, Is this a 8 channel 16 channel Motorola ? If it is a 16 channel you need to program pin 8 on the Motorola to Select PL/DPL & CSQ Detect and active low You also need to make sure your

Would the audio be a separate issue? Could this be a software issue should I try reinstalling?

I'll second the versatility of Notepad++ Dave. I've used it to paste the content of an email header, save it as *.txt, and the syntax will be true when re-opened with MS notepad. It's also handy for

William Phillips wrote: Sounds a lot like DTMF 1 is stuck "high", and adding 1 to otherwise-even numbers. Check (I think) D0 / GPIO 4 / Pin 15 for possible shorts? Nick -- "Nosey" Nick Waterman,

Ok That eliminated the radio interface side of things. Bruce Ve3bv Sent from my Galaxy Tab® E

The COS lights up green and the DTMF lights up orange.