Sounders

BruceB · 19 December 2007, 20:50

I need a sounder to finish off the electronics for my new hull.
I had a Garmin 240 Blue on the last one but it went with the boat.
I am looking for something with a reasonable sized screen, thru hull transducer, flush mountable and preferablly dual frequency.
It is for a cruising boat so I am not terribly bothered about pinpoint accuracy of whether the masts are still on that clipper ship down there but just a useable depth and idea of bottom type, especially good if it is reliable at speed. don't want bottom of range rubbish so what is recommended by folk using the current models out there?

Cookee · 20 December 2007, 09:37

If you're having a GPS why not get it combined? Or is it too late for that?

Pete7 · 20 December 2007, 10:10

Why do you need dual frequency? we use 200 hz for any depth a diver can reach and they have work down to 130m. Couldn't quite pick up the the bottom of the under water cliffs off Rathlin, but that was 180 metres.

Pete

BruceB · 20 December 2007, 17:27

Why not?

Pete7 · 20 December 2007, 21:31

If the sounder you choose comes with a dual frequency then yes why not, but its not something I would pay extra just to have.

Pete

BruceB · 01 January 2008, 00:26

I know dual frequency sounders usually alternate the two frequencies to operate both but.........
What happens if you have two sounders running with the transducers within 6 inches of each other, one on 50 and the other 200kHz at the same time? Would they interfere with each other?