Have any of you guys tried using an external antenna with your receiver for backpacking?
My GPSr (60CS) loses connection pretty easily under tree cover. I'd say it is certainly worth the cost of a good antenna if it makes a big difference in reception under tree cover. I really like keeping tracks so I can share topo maps with friends and have the trail reflected on the map. But it's hard under heavy cover. In fact, basically impossible.
I was thinking I could put the antenna on top of the pack, maybe even attach it to the top of the frame, and run the cable down the shoulder strap or something. I'd hate to waste the time and money rigging this up if it doesn't make a big difference though.
I see some +28 dB antennas, and some +55 dB antennas. Is there a big difference? I know with coax amplifiers it's is very easy to over-amplify the signal, is that an issue with a GPSr?