Humminbird 300 TX fishfinder

masshunter

Active member
Bought a 2001 pontoon boat last summer, and it came with this fish finder that I assume is of the same vintage. It seems to work well. The one thing that has me stumped is the fish alarm.There are three settings, large fish only, large & medium fish, and all fish. I just don't know what is considered a "large" fish, a 40"
pike ? 10 pound bass ? 18" rainbow ?. The manual doesn't answer this. Has anyone on here had any experience with this or a similar model ? I'm using it on a trout lake in Vermont that is over 100' deep. I'm pretty green with lake fishing.
 
Google "mikes reel repair humminbird 300tx manual" and it should be the first link that shows up. Mike's is a great resource for parts and schematics on about anything water related.
 
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