frequency confusion

No technical guru so a bit of confusion for me .

I have a simead with high chirp . Medium chirp 83 htz and 200 hts

Which one should I be using in 80 to 120mts. Any help would be appreciated

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RUSS and SANDY. A family that fishes together stays together


Posts: 164

Date Joined: 23/11/14

sounder

Fri, 2025-05-16 08:52

 Best frequency to use is 200 at your depths, happy hunting Paul.

Mackdog tackle's picture

Posts: 29

Date Joined: 01/01/23

 Generally high chirp when

Sun, 2025-05-18 13:17

 Generally high chirp when moving around as it bounce around a high frequency range, if you get too much interference then lock it to 200hz

Faulkner Family's picture

Posts: 18162

Date Joined: 11/03/08

Cheers.  tried the 200 but

Sun, 2025-05-18 18:50

Cheers.  tried the 200 but found not much on the bottom , switched it to medium chirp and found it reading real well when on the search and drifting. Will try high chirp out in 120 mtrs tomorrow

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RUSS and SANDY. A family that fishes together stays together

Mackdog tackle's picture

Posts: 29

Date Joined: 01/01/23

Medium chirp might be better

Mon, 2025-05-19 07:03

Medium chirp might be better anyway out in 120m, should be a decent cone angle once your out that deep. 

Posts: 583

Date Joined: 23/04/14

Depends on what you are doing

Tue, 2025-05-20 20:41

 Lower frequency will penetrate the water column further.  It will generally have a wider cone angle so you are covering more bottom area but in deeper water you will be less sure of the exact location of lumps.

Higher frequency won't penetrate as far but is better at punching through small disturbances in the water like bubbles etc.

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