I purchased the handheld mike from Elecraft. Works fine. Purchased the Heil headset from Elecraft and when I plug that in the radio goes to TRANSMIT and there is NO AUDIO. Plugged an old 8 pin ICOM mike into the front. Same. Radio goes to Transmit, no Audio. Elecraft hand mike works fine. Any thoughts anyone before the world ends? Bill N2WL wglevy at gmail.com