Hi Benjamin, I'm not exactly sure what's happening by your description. It sounds like your transmit is working ok, but maybe your node radio COS logic is flipped? If so, I'd suggest editing your simpleusb.conf (or usbradio.conf) and changing the COS sense. This should also fix your DTMF decoding issue.. Make sure to restart Asterisk afterwards (astres.sh) carrierfrom=ppinvert ; use either pp or ppinvert73 and good luck, Kyle Yoksh K0KN Olathe, KS ----- Original Message ----- Greetings All, I'm happy to say that I figured out at least a couple steps to get a functioning node that users across Allstarlink can connect to. I managed to get the TX working with the K0KN PLRI, and I'm using DSP for the receive side. I'd don't know what I did incorrectly, but now the radio keeps saying busy even with no antenna connected to it. This never happened before. I've be able to call into the node with the VoIP PBX to the public SIP connection and I can hear myself both ways. With very little latency. No choppiness, and no distortion. To review, I'm using Limey Linux for i686 on a Neoware CA-22. 1GHz VIA C7 processor, 1GB RAM, 1GB flash. I tried using the distro kerneled for VIA, but that didn't work for me for one reason or the other. I still have to figure out why the node doesn't recognize DTMF tones over RF, but I will get to that. Possibly I messed with the volume knob on the radio and have to use the radio-tune-menu again with the service monitor. It's a very crude, first ever, node setup using a 12V 18Ah SLA battery, Kenwood TM-241 radio, old 3A power supply from my CB radio days and lots of solder smoke still lingering in the Lab. It was fun to get this working, and I appreciate the advice from those whom have working systems. Thank you. You are all invited to test it out and make some noise in my local area. It's on 147.565MHz and the node number 28569. I was testing it on 146.52 to hopefully ruffle some feathers and generate some good activity on the call channel, and I was successful. ~Benjamin, KB9LFZ