On 10/17/2011 02:28 AM, Mark Sims wrote:
Yes, at one time there was some very precision surveying antennas that were temperature controlled. I'm not sure if they were just controlling just the preamp or the whole antenna, but I got the impression that they were controlling the temperature everything inside the "radome" package. At one time I did some TDR measurements on a piece of coax (I think it was 100 feet of black RG59). The day/night prop time variation was under a nanosecond. Something tells me that the cable delay changes itself won't make any difference. ----------------------------- Does anyone ever add a temperature controller on the antenna? Maybe that should be my next test.
I know that SP in Borås have actually temperature-controlled also their cable. Not only the pillar and radome.
Cheers, Magnus _______________________________________________ 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.
