Yes, the XL-DC and other Truetime models had as an option for long cable runs, a downconverter in the antenna. I don't know how to tell the difference from part number, but I know the truetimes my employer uses all have the downconverter option and the option is very common.
Tim N3QE On Wednesday, February 25, 2015, Doug Ronald <[email protected] <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: > I'm hoping someone can shed some light on my problem receiving any GPS > satellites. > > I have two TrueTime GPS Time & Frequency Receivers, Model XL-DC. One has a > regular crystal oscillator, and the other one has a rubidium oscillator. I > have two outdoor GPS antennas with internal LNAs, one a 28 dB gain unit, > and the other a 40 dB unit. When either antenna is connected to my Lucent > KS-24361, it locks right up and tracks up to 8 satellites. When either of > the antennas is connected to the XL-DCs, they just sit there and status : > "Looking for GPS satellites". > > In the Alarm menu of either XL-DC there is an alarm for Antenna. Both > units say "OK" and if I disconnect the antenna they both logically say > "Open". So, what is the problem? I can't believe I don't have enough > signal, after the Lucent locks-up right away. Is it possible the TrueTime > sanctioned antenna has a down converter in it, perhaps placing the GPS > signal from L-band to some lower frequency? I would appreciate any info the > group might have... > > -Doug Ronald > W6DSR > > _______________________________________________ > 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.
