Sonar Shield Vs Internal GPS - Kayak Fishing Adventures on Big Water’s Edge

technoyak · 11-24-2008, 06:16 AM

Internal antenna is better, external antenna should not be a problem. I got an external antenna GPSMAP 178 unit without the antenna. What I did is I got a BNC connector from RadioShak and connected a piece of copper wire to it. Done. No WAAS but good enough to 20 ft accuracy. It'll do untill I get a cheap antenna from somehwere. But I asure you, you can't go any cheaper than this! The only caveat is it takes very long to get a consistent 3D signal.

11-24-2008, 06:16 AM	#12
technoyak Junior Member Join Date: Nov 2008 Posts: 7	Internal antenna is better, external antenna should not be a problem. I got an external antenna GPSMAP 178 unit without the antenna. What I did is I got a BNC connector from RadioShak and connected a piece of copper wire to it. Done. No WAAS but good enough to 20 ft accuracy. It'll do untill I get a cheap antenna from somehwere. But I asure you, you can't go any cheaper than this! The only caveat is it takes very long to get a consistent 3D signal.