[time-nuts] Thunderbolt antenna?
Peter Vince
pvince at theiet.org
Sat Mar 13 09:45:13 UTC 2010
That's a dramatic and impressive difference Mark! Were the other
choke-rings similarly better than the "ordinary" conical, or was this
one heads and shoulders better than the rest? I was just wondering if
it was the choke-ring concept that gave the major improvement, with
this one just being slightly better executed?
Regards,
Peter Vince (London, England)
On 13 March 2010 02:52, Mark Sims <holrum at hotmail.com> wrote:
>
> Yep, it's a standard choke ring antenna. It's optimized for L1 freqs. Leica also rebranded and sold it.
>
> I have tested 6 different choke ring and geodetic grade antennas. This one works the best of the bunch (at least for me). With my 48 hour precision survey code, I got results within an inch or so of the true location. VERY impressive. Most of the other geodetic quality antennas were in the 4-6 inch range.
>
> Attached are two plots of the fixes produced by each antenna. The first is a Symmeticom conical timing antenna. The other is the choke ring antenna.
>
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