In article ,
Peter wrote:
When my hand held Garmin loses enough sats for position calculation, I
receive an alarm on the unit (both visual and audible).

Right, but some of the old units (the 10 year old but still widely
used Garmin 195 being one case that keeps popping up anecdotally)
don't implement this properly.

I used to own a 195, and I'm pretty sure that it alerted me when it lost
position, but I no longer own it, so I can't verify if or how this
functionality existed. It's easy enough to implemented I can't imagine
any hand held manufacturer excluding it.



JKG