Hi Guys: Following my recent posts, I am happy to report that node 2424 is on-air again (this time using a pair of Bridgecom BCM220 mobiles / same hardware used in the BCR220 repeater!). The audio out is nice and clean.... the Hum that I reported earlier this week was solved last night, on the suggestion of Jon, VA3RQ. I was testing at home using a RPi (running 3 nodes ;). The Pi is powered from a Walwart and although the USB fob audio ground is connected through to the ground pin on the radio's DB15, there seemed to be a ground loop, which was solved by connecting the RPi ground to the power supply ground! At the repeater site, I am using a HP SFF PC. I am happy to report that after setting audio levels with an AeroFlex test set, the audio is crystal clear - very nice :) I have a couple of issues that I need some help with: 1. My nodes (2182 and 2424) are not showing up on the Allstar stats page - when I switch to CLI and do an 'iax2 reload' they appear to register fine and with the correct IP address. 2. I like a nice quiet repeater, so prefer to use "talk through tone" (cop,58). This is great in that we do not hear courtesy tones, telemetry messages, etc. When the repeater is being used locally, the PL is sent, so we hear that (on a CTCSS enabled radio). However, the PL is NOT sent when the repeater is passing "remote" audio (i.e., audio from remote hosts). Can someone verify this behavior, is this "working as designed" or a bug? Thanks to Jon (VA3RQ), Scott (N3XCC) and Kevin (W3KKC) for all of your help with this project over the past couple of weeks. Cheers! Ramesh, VA3UV