Thread: Sonar Quiz #25

The angle that the fish is oriented?

I was just at a humminbird seminar in Caruthersville mo.this weekend and we talked about this same scenario. (Rickie, I think that this may be your best quiz yet....keep um coming)

I would say its a slimy catfish. to much slippery slim for 2d to read, the pulse just rolls right off it. I programmed mine not read those nasty things, Rickie may have his on the same setting!!

Because the 2d cone makes contact with the bottom above said fish ?

Or because the fish directly above it is blocking the sonar return ?

That's my thoughts I'm probably wrong lol

The fish in the DI is outside the Sonar cone of the 2d?

Think Crappiekirby has this wrapped up!

Originally Posted by Crappiekirby

The fish in the DI is outside the Sonar cone of the 2d?

I'm with Redge on this one....I think Crappiekirby nailed it

Originally Posted by short grub

because the fish directly above it is blocking the sonar return ?

I was thinking something along those lines, sorta ...

If you look at the 2d return signal of the fish just below the 10ft line ... they're dark red & large. Then the fish signals from 13-15ft are smaller red blotches (left of center of screen) with the ones just above the 15ft line not having any red at all. The fish showing on the DI image @ 17-19ft ARE showing on the 2d screen, they're just not returning a very strong signal ... so you only see a little patch of blue & green.
When you compare them to the DI image placement of the "same" fish images ... the DI images are clear & separated into nearly individual fish & bait balls, while the 2d image has multi-colored blotches that seem to define "size" by the closer distance, rather than simply from the return ping (regardless of distance). Could it be that the higher kHz signal of DI is not "painting" with as wide a brush as the 2d signal, therefore is able to pick up the images of the deeper fish ??

If I only had 2d and got that image ... I'd have to guess as to whether I was seeing 3 or 4 large fish or 2 large schools of Shad next to a brushpile on a hump. Again, I question the functionality or necessity of even having 2d in a unit, when DI (or SI) eliminates 90% of the "guessing game" of what's actually showing on the screen.

... cp