Return-Path: Received: from interlock.jci.com ([198.81.196.2]) by truman.olsusa.com (Post.Office MTA v3.1.2 release (PO203-101c) ID# 0-44819U2500L250S0) with SMTP id AAA8651 for ; Tue, 22 Sep 1998 07:02:15 -0400 Received: by interlock.jci.com id AA08856 (InterLock SMTP Gateway 3.0 for lancair.list@olsusa.com); Tue, 22 Sep 1998 06:02:10 -0500 Received: by interlock.jci.com (Protected-side Proxy Mail Agent-2); Tue, 22 Sep 1998 06:02:10 -0500 Received: by interlock.jci.com (Protected-side Proxy Mail Agent-1); Tue, 22 Sep 1998 06:02:10 -0500 From: "Dunlap, Lloyd A" To: lancair.list@olsusa.com Message-Id: <85256687.003B45B8.00@Corpnotes.JCI.Com> Date: Tue, 22 Sep 1998 07:01:26 -0400 Subject: GPS Antennas X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> I too didn't like the cost of these active (amplifying) GPS antennas. I found that an antenna from a Motorola Traxxar ground vehicle GPS system works great with my Garmin GPS 100AVD. I found it at a ham radio swap (Dayton Hamvention) for a mere $35. All my signal numbers increased about 40% and it locks in MUCH quicker. Besides, designing things at that frequency really stinks because many of the parts you will need are either so small you can hardly see them or just not availible commercially. Another option is try a sporting goods store. At 75 - 80$ they're still a bargain compared to the $375 an aviation GPS antenna costs. I mounted mine right under the glare shield with about a 12" length of coax on a 4 bid L-bracket on the aft side of the header tank. Good Luck ! Lloyd