Hello Dan and Aaron
This is Jeff-WB9OUF from the CTCSS vs COS thread, I have an Audio problem, and I need your help to determine whether it is hardware or software in nature.
To Recap, my hardware is:
1) Raspberry Pi 3b+
2) ICS Pi 2x Controller board
3) 32 Gb San disk Micro SSD
Software:
1) OpenRepeater program version#2.1.1
I downloaded the image, expanded the files, and configured the program via the UI.
I build the DB-9 to DB-25 cabling to connect the controller to the repeater using the “Active Low” “CTCSS indicate” to Pin #7 COW from RX on the Pi-2 board, as per our previous discussions.

This is where the fun starts:

I Key and release the repeater, I get:
1) Courtesy tone
2) Squelch tail of appropriate length
3) Voice and CW ID’s at proper times at appropriate level
No voice transmit audio, no signal present at either Q1 or Q2 measuring points, and No force ID and the DTFM command of “*”. Regardless of “R input pot.” Setting…tried multiple points.

I put my scope on DB-9 Pin #5 and got RX Discriminator output
On Pin #4 I saw output for ID’s and Courtesy tones….but not output for voice audio!
Here is everything I’ve tried:
1) Thinking the 10-pin header to female DB-9 might be defective I traded it with the Port 2 dongle with the same results.
2) Powered down the system and re-powered up, —no change, same results.
3) Re downloaded a fresh image to a fresh SSD card, expanded the files, and reconfigured a fresh copy of “OpenRepeater”—–No change, same results.

Could this be a defective Pi 2x board? I think I’ve eliminated everything from my DB-9 connector to the repeater.

As one last test, I reconnected the Repeater’s old controller, and it works as well as before.
I’m lost…..any and all suggestions would be greatly appreciated.

73

Jeff-WB9OUF