In a message dated 20/01/2009 09:32:45 GMT Standard Time, [email protected] writes:
Guess I'll have to start a search for an HP58532A, VIC-100, Vaisala or similar. I don't think a cheapy £4 patch antenna will give the same performance. ----------------- Hi Grant I think this really does depend on where you are, satellites in view etc, and what level of performance you're actually looking for. I have a few different timing antennas but have found these don't give very reliable reception indoors. Until I can get these mounted outdoors I have been having good results on various receivers using some small Trimble magnetic patch antennas, specified 26dB gain, attached to a steel plate and sitting on a shelf inside a one level timber framed house on the west coast of Scotland. These came via a buy it now from the usual place at $21 for 10 about a year ago. Driving a pair of Thunderbolts with these and comparing them with an HP 53132A counter, either one as reference and the other as input, once locked I see variations of just a few places around zero in the 10th decimal place. I have used this test on any two units selected from four with consistent results. Not a very scientific test perhaps, and nothing else measured, but as regards frequency at least I don't think they're suffering too much from their "lesser" antennas:-) regards Nigel GM8PZR _______________________________________________ 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.
