Originally Posted by rossad
Anybody know the difference with the strengths of GSP. For example using a marine chartplotter like a Garmin with an inbuilt antenna compared to an android GPS also with an inbuilt antenna..... would one have a better reception
and or gaining more fixes with satellites with a more powerful GSP. I have tried to find this answer on the net without much success.
Generally the technology in fixed marine GPS is very out of date compared to the best units available. The speed of fix, number of satellites tracked, WAAS or EGNOS implementation is generally poor. A cheap
Chinese GPS unit will do these things much better.
The manufactures claim non marine units are more vulnerable to VHF interference
, but there does not seem any practical difference to me.
Where the marine units are better is waterproof ness of the unit and no magnet.
A unit with a display is also better IMHO. It enables the unit to function independently and with much lower power consumption
and better reliability
than something that needs to be hooked up to a tablet or PC.
If you don't need the display you have no need to mount it where it can be easily seen, but it will still be available if the tablet etc fails. The cost of a marine unit with display like the Furuno
GP 32 or a garmin handheld is no more than the simple no display marine units like the raymarine
125. Some of the none marine units can be purchased much cheaper however.