And I did not make myself clear. If you were using power inserters, I expect one was used coming from your GPS receiver and you shunted the DC voltage around the attenuator and re-inserted DC voltage back to the antenna.
Brian Kirby wrote: > Can we clarify, you were using the DC blocks or were they power inserters ? > > Brian > > David McGaw wrote: >> Hello Gents (and Ladies), >> >> I am in a bit of a quandary. I have been using a Synergy Timing 3000 >> GPS antenna in a test set-up for some time and recently got a VIC-100 >> antenna, thinking that its greater spec-sheet gain (38dBi vs 25dB(i?) >> typical) would allow for a longer down-lead in the field if >> needed. Upon testing, the VIC-100 appears to have around 10dB LESS >> gain than the Timing 3000 and I would say is barely adequate on 25 ft >> of LMR-195! I used a switched attenuator pad with 2 DC blocks for >> the test and set each antenna to comparable SNR levels as indicated >> using TAC32 with an M12M-T. I have tried a second VIC-100 with the >> same results. Would anyone have an explanation for this? >> >> Thanks, >> >> David McGaw N1HAC >> >> >> >> _______________________________________________ >> 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.
