[time-nuts] Rooftop antenna and splitter

[Bob kb8tq]

Hi

You very much do *not* want to put a ground plane on one of the modern survey
antennas.(Chinese or US or Canadian or …)  The better ones are very explicit 
about this. They are optimized to sit on a pole in free air. Anything else and the 
pattern is degraded. ( = multipath gets worse)

Bob

> On Apr 30, 2019, at 2:23 PM, David J Taylor via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> Hi David,
> 
> No, no ground plane. Don’t really have a lot of room for that in the window. Out of curiosity, how large of an impact have you found with a ground plane?
> 
> Btw, I love the pan!
> 
> Denny
> ============================
> 
> Yes, Denny, choosing the baking tray (IIRC) was fun - I wanted as large a flat area as I could reasonably get, but it has to be magnetic.  I don't recall what I took into the shop to test with!
> 
> Unfortunately I didn't make any specific measurements with and without the ground plane, but I did see a noticeable increase in SNR.  Even a small e.g. tobacco tin may help.
> 
> Cheers,
> David
> -- 
> SatSignal Software - Quality software for you
> Web: http://www.satsignal.eu
> Email: david-taylor at blueyonder.co.uk
> Twitter: @gm8arv 
> 
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