Technical question regarding interfering signals....

[goldenglory18]

+1

It's basically the equivalent of audio feedback....

[chris138]

you can get interference from a lot more than 20' away... there are a few things you can do.

1. have one person run 83kHz, and the other person run "mid chirp". This will still produce some feedback, but it will lessen it.

2. turn up the "noise rejection" filter on your units.

3. If you want to work an area close together, have one person run 83 and the other run 200 kHz.

All said, you can still read the returns through the feedback. After you stare through the feedback for several hours, you hardly notice it.

[Geofish]

Originally Posted by chris138

you can get interference from a lot more than 20' away... there are a few things you can do.

1. have one person run 83kHz, and the other person run "mid chirp". This will still produce some feedback, but it will lessen it.

2. turn up the "noise rejection" filter on your units.

3. If you want to work an area close together, have one person run 83 and the other run 200 kHz.

All said, you can still read the returns through the feedback. After you stare through the feedback for several hours, you hardly notice it.

I'm the buddy in question. I like the idea of running different frequencies and working an area. Thanks.

[chris138]

Originally Posted by Geofish

I'm the buddy in question. I like the idea of running different frequencies and working an area. Thanks.

If you are in shallow enough water... like i'd say 80' or less... one person could also use downscan frequency 455 kHz as well. In some scenarios I like 455 more than 200. It has a wider beam, and does really well over kelp.