Sounds like the GPS receiver is hosed. I think there are two different receivers used in the 58503a, unfortunately I'm away from my lab, otherwise I could check mine. It is a standard part, and may be available on the surplus market.
Before replacing, I'd check the usual suspects, power supply health (look for failed electrolytics) and re-seat the gps board to board connector. Happy to measure things on my 58503a. Andy ◉ Bardagjy.com ◉ +1-404-964-1641 > On Dec 30, 2014, at 12:35 PM, Richard Thorpe <[email protected]> wrote: > > This list was recommended to me by the elecraft list. I have an HP-58503A > sat disciplined “clock” that puts out a steady 10MHz to my K3 radio. Its > been working 24/7 for years, I monitor it with David Anderson's Mac GPS > Control X software on my iMac. Several days ago error messages showed up > i.e.: Health- err, Self Test-err, Int Power- OK, OCXO- OK, EFC-OK GPS > RCV-err. Its not tracking any sats and now I cannot event communicate with it > at all even with a simple com program. Is there anyone out therE who can fix > these things? Any suggestions would be appreciated. Thank you. > > Richard Thorpe K6CG > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
