> Hi Dave, > > On 04/21/2013 10:32 AM, David Kirkby wrote: >> On 20 April 2013 20:52, Tom Van Baak<[email protected]> wrote: >> >>> For the rest of you: >>> >>> http://www.leapsecond.com/images/gps-pinwheel-1.jpg >>> http://www.leapsecond.com/images/gps-pinwheel-2.jpg >>> >>> It's a thing of mysterious beauty. And the GPS World photo saves me >>> from the temptation to break open my own pinwheel antenna just to see >>> what's hidden inside. >>> >>> /tvb >> >> Does the antenna work better than other types? > > You should get close to choke-ring antenna performance at a much smaller > size. For many purposes its good enough.
Note that the traditional JPL type choke-ring is beeing replaced by more advanced designs in the money-is-no-problem market. http://www.topconpositioning.com/sites/default/files/PN-A5_white_paper.pdf http://www.novatel.com/assets/Documents/Papers/3D_choke_ring.pdf -- Björn _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
