fishfinder/gps combo

C

chas

New member
I just purchased a 16 ft Angler (2007) and am wondering if the internal gps antenna on most of the fishfinders are sufficient, or do I need t find a model that has an external antenna.
 
The "internal" antennas on the GPS chart plotters work well in the cabins of the C Dory. You want to be sure that there is no metal between the sky and the unit. However the latest chip sets will work in cars and houses. I would try without an external antenna. I use several with no external antennas and have had no problems even in Alaska.
 
I have the lowarance hds7 with the unit mounted near the winshield no problems with satalite lock had to move foreward the radar dome was causing interference.
 
fishingmark":1w91rt6n said:
I have the lowarance hds7 with the unit mounted near the winshield no problems with satalite lock had to move foreward the radar dome was causing interference.
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Did you mean you moved the radar dome forward because it interfered with the GPS signal? I'm considering getting a Lowrance HDS 10 for our 22 C-dory, and I may be adding radar at some point. Your input would be appreciated.

thanks , tom
 
I have had radars on my C Dories and not found that they interfered with my internal GPS antennas--but the Radar was set back so that it was not just right overhead. The radar antenna is only several inches wide x the length of the scanner--usually 16 t0 24 inches. The mounting plate may give more of a shadow than the scanner does.
 
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