[time-nuts] Thunderbolt antenna?

[Peter Vince]

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.
>