[time-nuts] GPS antenna in attic?

[jmfranke]

My main GPS receiver  used to see four to six satellites at a time when I 
used an antenna near a window in my workshop in a singe story house. I moved 
the antenna up into the attic near the peak, added 25 feet of TV cable, did 
not add any amplification, and now my system acquires and tracks eight to 
twelve satellites at a time. I did not want to move the antenna outside in 
order to reduce the chance of roof leaks and to avoid having to provide 
lightning strike protection. We do not get much, if any snow, and I have not 
noticed any problems with rain.

John  WA4WDL

--------------------------------------------------
From: "Peter Gottlieb" <nerd at verizon.net>
Sent: Sunday, November 25, 2012 11:50 AM
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Subject: [time-nuts] GPS antenna in attic?

> 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.
>
> Peter
>
>
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