Marine Electronics Forum

Noob on Garmin Fish Finder

Old 05-17-2019, 09:26 PM
Junior Member
Thread Starter
Join Date: May 2019
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default Noob on Garmin Fish Finder


I'm looking at the Echomap Plus 62CV with no transducer and I'm going to pair it with GT-21TM. I mostly fish offshore not more than 200M that's why I prefer the 50/200khz.

My question is with regards to Sonar frequency.

Will I have the option in the sonar menu to choose LOW & HIGH Chirp since it's a 50/200Khz?

i'm a bit confused if this transducer will give that option because based on the description on their website, it only says "traditional 600W 50/200Khz"

Unlike the GT-23, it's says "CHIRP Mid-band (80-160 kHz)"

Does Garmin have a Chirp Low band transducer?

Old 05-17-2019, 11:28 PM
Senior Member
Join Date: Apr 2019
Posts: 111
Received 13 Likes on 12 Posts

The GT21 does not do chirp for traditional sonar; it's just a dual frequency transducer. It uses a form of chirp for the ClearVu or as some other companies call it structure scan portion but that is not the same and is not as good at finding fish.

Usually you will see a chirp transducer advertise a range like 80-160 as opposed to a dual frequency that does either/or 50/200.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.