The reported shutdown was due to two quickly spaced AC Mains interruption. No surge protector in place for the power outlet strip for the microHAM interface and my PacComm PTC II modem. They both took the hit with the microHAM leaving the scene and the PTC II modem now at Farallon being evaluated for repair. I have an SCS PTC-IIe modem that I put into service.
My HF system was hit with two power outages in quick succession during a Thunderstorm. The ICOM IC-746 (Pre-PRO) was damaged such that it is in permanent TX mode. This is caused by an IC failure, one of many in the transceiver that are no longer available.
This failure occurred while I was at work. The gateway will be down a while, effective 21 SEP 2020 while I consider possibilities for a replacement radio.