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.
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