Thanks for responding. Unfortunately I don't have another GPS receiver. The coax is RG6 with solid center conductor. I can put AIM4170 antenna analyzer on it but mine only goes up to 180 MHz. Coax could show quite OK at 180 and be a lot different at 1500. Won't hurt to try tho.
On Fri, Jan 8, 2016 at 8:31 PM, Lizeth Norman <[email protected]> wrote: > Can you attach another gps reciever to the coax and confirm it's a > receiver issue? > Can you test coax with a load on one end and a antenna analzyer at the > other to ensure performance at some reasonable value (432 MHz)? > RG-59 (solid core) can do some odd stuff. > 73 from el89va > n3ykf > > On Fri, Jan 8, 2016 at 8:49 PM, Michael Bauer <[email protected]> wrote: > > My subj Nortel Trimble GPSTM had been working well for about two years. > > Changed QTH by about 20 miles, reconnected with same power supply, coax > and > > antenna. Cannot see any GPS satellites or 10 mHz output (9.8MHz on 8X > Chip > > is present and front panel LEDs show the unit responding to software > > commands as before). > > > > Lady Heather and tboltmon both report ROM, RAM, OSC, POWER, EEPROM and > > ANTENNA OK thru RS-232 interface. Replaced bullet antenna anyway - no > > change. 5VDC present at antenna and it draws about 33 mA. Other local > GPS > > devices (two vehicles and one EarthMate) achieve 3D fixes from ground > level > > antennas. Performed warm, cold and hard resets (erasing former GPS > > position), min elevation set at 15 degrees. Survey starts, but doesn't > > proceed. All eight satellite status lines show yellow and zero's across. > > Undisciplined, No GPS time, no Posn. Start date is reported as 07 April > > 2019 week 2048. > > > > The unit performed flawlessly at previous QTH frequently showing good > > signals from 7-8 GPS satellites. What happened? Do I have a broken box > > that cannot be detected by software control/reporting programs? > > > > Thanks in advance for any ideas. > > > > 73, > > > > Mike - W7GW > > _______________________________________________ > > 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. > _______________________________________________ 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.
