Re: Internal or Puck antenna on Lowrance gps/fishfinder units??
I have both an internal and external on my boat. I run it that way, so if either antena fails, I can run the other as a back up, as for reception, it is really close from the external to the internal, but I will lose waas a little more often on the internal.
I have had multiple failures with the external antena, a couple at the worst time, day before Stren, twice. So I make sure I have a spare available.