Orion 565AT, AT, V2 upgrades performed by Ten-Tec. Firmware ver. 2.062A Radio has Inrad 400 Hz and 1.8 Khz roofing filters. Built in Automatic antenna tuner. I'm the second owner all non smoking. Excellent condition with manual, power cable and original Ten-Tec shipping box. $2100.00 or best offer shipped and insured.