The elevation mask might also come into play. Ordinarily you don't want to consider input from satellites too near the horizon, as terrestrial features can distort the signal's timing.
I think it can be stated with confidence that there's nothing wrong with a (normally functioning) Thunderbolt's sensitivity specs, and that putting random amplifiers, splitters, and such into the antenna lead might be counterproductive. -- john, KE5FX > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Behalf Of J. L. Trantham > Sent: Thursday, August 28, 2008 7:39 PM > To: 'Discussion of precise time and frequency measurement' > Subject: Re: [time-nuts] Trimble Thunderbolt - Receive Sensistivity > > > When I compared the function of the Thunderbolt to my Z3816A, the > number of > tracked satellites was smaller on the Thunderbolt. However, the Signal > Level Mask is set to 4.0 on the Thunderbolt. After I reset it to > 1.0, they > tracked the same (and number of) satellites. > > This I did with TBoltMon under 'Setup', 'GPS Receiver' which takes you to > 'Receiver Configuration'. Change the Signal Level Mask (AMU) to > the desired > number then 'Set Receiver'. I also hit 'Save Segment' though I > do not know > if this is a required step. > > Joe _______________________________________________ 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.
