On 1/17/2020 12:11 AM, William Maddox on CCTalk via cctalk wrote: This board from the same vendor has a test point marked DISCH on it, maybe part of same subsystem if the guy is repeating info that is close to accurate. Vintage-CONTROL-DATA-Computer-Module-PCB-196Os/ <https://www.ebay.com/itm/Vintage-CONTROL-DATA-Computer-Module-PCB-196Os/283730399441> https://www.ebay.com/itm/283730399441 <https://www.ebay.com/itm/Vintage-CONTROL-DATA-Computer-Module-PCB-196Os/283730399441> of course the seller admits to no idea what he has, so who know about this and the other two "Univac" boards he has. Interesting though. thanks Jim

On 2020-Jan-17, at 12:11 AM, William Maddox on CCTalk via cctalk wrote: The circumferential wire bundles feed two-stage transistor amplifiers that drive toward the center, then drop down to the interior board through inductors and then feed back toward the circumference near the coax connectors. It looks like one of the coax connectors (J26) is out of regular angular displacement from the others. I'm wondering if it could be some sort of rotating / multi-phase modulator. An RF carrier injected on the odd-one-out coax connector, modulated or switched in a rotating sequence via the circle of drivers, out to the circle of coax connectors. Sheer guess as I've never seen one, but perhaps for a VOR station, to set up the (electronically-generated) rotating beacon, the coax connectors would feed out to RF amps and a circle of antenna segments. It looks a little too engineered to be for a lab experiment. Date codes 1980-1982.