[time-nuts] helibowl GPS antennas

Peter Monta pmonta at gmail.com
Fri May 11 22:08:51 UTC 2012


> So, I've looked at several dozen helibowls and talked to makers of said
> items..

Thanks for posting this; maybe a homemade helibowl is a good way to
get a low-cost GPS antenna with full frequency coverage down to L5.
In my search for survey-grade antennas at hobbyist prices, I ran
across this, as posted on Michele Bavaro's blog:

http://www.onetalent-gnss.com/announcements/anovelpowerfulantennanavxperience3gc

http://docs.google.com/viewer?a=v&pid=sites&srcid=b25ldGFsZW50LWduc3MuY29tfHd3d3xneDo1NTdmMzQzMDljOGZmODJh

http://www.navxperience.com/download/3G_C_english.pdf

Most of the complexity seems to be in the combiner network, which,
being a planar circuit, can be well modeled.

Cheers,
Peter



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