[time-nuts] Anyone have experience with this antenna?

Bob kb8tq kb8tq at n1k.org
Wed Feb 7 09:38:26 EST 2018


It’s not the end stops that are the issue. It’s the wall of the pipe. If the dimensions in 
the sketch are roughly correct and you scale it to the dimensions of the eBay antenna,
that is a big tall pipe. Indeed “nothing overhead” would mitigate part of the issue. That magic
line runs roughly along Hadrian’s Wall in the UK. I’d bet that 80 degrees overhead would still be
an issue. 

Again, this is an extreme case and not the typical cover for a GPS antenna. 

Water wise, one might note the large piles of snow sitting on my antennas at the moment. Yes, I 
could go knock it off, but somehow it just keeps coming back. Weird how winter works …. There
is no perfect solution. 


> On Feb 7, 2018, at 3:59 AM, Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:
> --------
> In message <CAGP4rdm0GbEfr=uWtWq75nmN0Rk05xAUa4v0xdiX9MxR7Dde9g at mail.gmail.com>, Michael Wouters writes:
> One thing about Bo's pipe radome which is worth pointing out is that
> like me he is on 56 degrees north latitude, which just so happens to
> mean that we have no GPS satellites passing directly overhead.
> I can't remember the exact dimensions of the "hole" we look up into,
> but eyeballing Bo's sketch, I think the endstop might just never
> get in the way of any actual signals.
> -- 
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe    
> Never attribute to malice what can adequately be explained by incompetence.
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