Wonder if anyone on the list has information about a Lucent Rubidium locked to GPS unit I have? Its relatively new, maybe five years old. Purportedly to be from a failed cell site venture that caused the unit to be sold surplus having never been installed. The nomenclature on it is:
Lucent: KS-24019 L109 which I assume may be an in house part number or contract number. The model number is: RFTGm-II-Rb . I've posted some pictures at: http://campus.pari.edu/gps-freq/Lucent560F.JPG http://campus.pari.edu/gps-freq/Lucent561F.JPG http://campus.pari.edu/gps-freq/Lucent562F.JPG The unit comes up and locks an OCXO to GPS. Then after some more warm up time it switches over to the locked Rubidium side and the OCXO switches to become the standby. My problem with it is that when I come back the next day the Rb side has faulted out and pushed the system back onto the OCXO as the main online 10 MHz source. Its unlikely the Rubidium lamp is old enough to be a problem, or that the initial frequency adjustment has drifted out of range.. though I suppose its remotely possible. Have been running the unit on 24vdc but would try more if I thought the normal -48 ~ 56vdc telco battery strings were used with this. It gets warm enough on 24vdc that I didn't want to chance it until I asked. I know if its a switcher that it might actually run cooler on higher voltage due to a proportionate drop in current. Just haven't had a chance to reverse engineer it all. I see RS422 labeling on some of the ports. But without more info I'm proceeding with caution and somewhat at a standstill as to what's going on. Anyone have any experience with these units? Thanks, Charles S. Osborne, K4CSO Technical Director Pisgah Astronomical Research Institute 1 PARI Drive, HC 73, Box 638 Rosman, NC 28772-9614 http://www.pari.edu 828-862-5813 direct 828-862-5554 main 828-862-5877 FAX [EMAIL PROTECTED] _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
