Due to a wiring/design error in my backup battery charging circuit, the smoke came out of my Kenwood TM-V71A radio during a backup power test. Consequently, my RMS Packet Gateway will be down until the radio can be repaired or replaced. Appropriately enough, the part labeled "D612 Surge Absorber" in the TM-V71A schematics sacrificed itself in the melee. I ordered the part and assuming it was the only component damaged in the incident, I should have the radio repaired by next weekend.