Thread: humminbird greg

Wow , Thanks everyone.I understand now that to get 1 to 1 water ratio on 2D sonar I have got to pick another unit. I want to get more than 3.33 feet in 10 feet of water. (20 dec. cone angle) I think everyone is saying that on a stationary or slow moving boat, the sonar showing lots of fish could be picking up the same one or two instead of a screen full. If I just purchase a 2D sonar with dual beam plus can I get more bottom coverage. Thanks , Greg for the information on transducer and switches. Maybe I am asking to much or am looking for something that is not availiable yet.Thanks again everyone for the valiable information.

crappie1133,
If you want a wider coverage area for 2D sonar than the standard DualBeam units that we make will work best for you. Just make sure that it is a 700 series unit (DualBeam Plus sonar) so that you can select to display the wider 60 degree 2D sonar beam information as it covers 1 X the water depth for coverage area.

For the widest coverage area (with a single sonar beam) you can’t beat the 75 degree coverage you get with the 455kHz DI sonar beam of our DI units.

A third option is to use a unit that can use the QuadraBeam transducer which uses three sonar beams to cover a 909 degree area. This gives you 2X the water depth in coverage area. Wider than this is only available with an Si sonar unit.

Now as far as using each sonar in shallow water: the lower frequencies (like the 60 degree 83kHz sonar we use for our DualBeam units) does not work as well as the higher frequencies does (like the 200kHz and 455kHz). They also cannot show as small of sonar signal returns or detail as the higher frequency beams can.