[time-nuts] GPS antenna in attic?
Hal Murray
hmurray at megapathdsl.net
Sun Nov 25 19:09:45 UTC 2012
nerd at verizon.net said:
> I'm beginning to set up in my new house and planning where all my various
> antennas are going to go. Being a wood frame building, I was wondering if
> it was sufficient to simply mount my Thunderbolt GPS antenna high in the
> attic. It would be convenient as there is already a high quality CATV line
> running from there to my lab area that I'm not going to use and the
> Thunderbolt antenna system is 75 ohms. Will I have much attenuation going
> through an asphalt shingle roof? What if it is wet? Or has some snow on
> it? Another advantage for me would be I could mount that antenna on the
> opposite end of the house from where I will have VHF and UHF transmitter
> antennas.
Try it. That's the only way to find out how well it works for you.
Do you have software to monitor holdover?
My TBolt antenna is inside, one ceiling under a similar roof. It switches
into holdover several times a day. I think it happens more often when the
roof is wet but I don't have numbers to back that up. No snow here so I
can't comment on that.
Part of my problems may be reflections (multi-path) from nearby buildings.
--
These are my opinions. I hate spam.
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