[time-nuts] Thunderbolt antenna?

Mark Sims holrum at hotmail.com
Sat Mar 13 16:55:20 UTC 2010


All the choke ring antennas were similar in performance.   The Aero/Leica one is optimized for the L1 freq only.   

All the other choke rings that I tested did L1/L2 which compromises performance a bit which did show up in the data (but at a level that could just have been random luck of the draw).  Where the L1 only antenna was getting precision survey offsets in the one inch area,  the L1/L2 units were in the 2-3 inch area.

Lesser survey grade antennas might be in the 6-12 inch range.   Conical timing antennas in the 1-2 foot range (they are just a higher quality patch antenna under a conical radome).   Cheap automotive patch antennas in the 3+ foot range. 		 	   		  
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