Mornin' Steve,
Anyone have a working node using an SCOM 7330 in line?
I currently am trying to get these two to work. It's about 80% right now.
Audio from the node box is making it to the repeater and keying the transmitter, no problem there. The problem I'm having is the audio from the repeater not getting into the node box. I see the audio on a scope at pin 9 (mic_in) on the URI. I also have a transition from high to low on pins 7 and 8 (COR Det and CTCSS Det) when the 7330 tells it to transmit.
We are working on this now. I just built a cable and needed to add a pullup resistor at the URI COR input between pins 8 and 14. If you're using the CTCSS input, you need one there, too. I added the pullup in the DB-25 shell.
On the 7330, I'm using port 1 for the repeater. Port 3 is connect to the URI.
Paths on 7330 as follows: RX-1 to TX-1 RX-1 to TX-3 RX-3 to TX-1
In rpt.conf I have duplex=0 and linktolink=on
In USB radio I have carrierfrom=usb and ctcssfrom=usb
73, Dave -- Dave Maciorowski, WA1JHK Director Colorado Repeater Association http://www.w0cra.org cra@w0cra.org