Hi Bjorn Is yours also the cut down 2.084MHz version, or do you have a "proper" 8821B with a more useful GPSDO frequency and all the outputs fitted? I think this one was originally used in a trunked radio system. I've just checked and the fitted VP Oncore is the B8121Z116, so perhaps the same module, but I'd forgotten until I looked again that the unit is without the IRIG-B output as well as the Low-Rate output that normally allows a variety of pre-set pulse rates, hence my "cut down" comment. The Low-Rate ouput speciification suggests some interesting possibilities for experiments in conditioning other oscillators, as amongst some very slow pulse rates it also offered an option of 1 MPPS. Unfortunately, not only are the connectors not fitted but quite a lot of presumably associated PCB components in that area are also missing. Do you have a manual for the 8821B? I've only ever found a manual for the 8821A, although I suspect the only significant difference may be the fitting of the larger B7A OCXO to the 8821B, which necessitated the height increase to 2U, but it would be nice to be able to compare them. regards Nigel GM8PZR In a message dated 21/08/2012 21:05:02 GMT Daylight Time, b...@lysator.liu.se writes: Hi Nigel,
Have one of those Trak 8821B too. It is a bit interesting since the Motorola Oncore VP inside mine has the Z option (phase measurement). -- Björn _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
