Thread: HB Side Imaging vs HDS Structure Scan...

nice pics again Kosmo. when you mentioned being on the 455 i too find in 10-20 ft of water i get better picture. that is against what it is supposed to be i am talking di whats your thoughts?

Originally Posted by Crappiegirl1

nice pics again Kosmo. when you mentioned being on the 455 i too find in 10-20 ft of water i get better picture. that is against what it is supposed to be i am talking di whats your thoughts?

ok, first off youve got to rember that my humminbird is using the si eliments to render the di. you have an eliment just for di that is facing strait down.the 455khz,even though the two si eliments are facing outwords overlap beneath the boat giving my unit the di.this is hot the strongest portion of the beam,but it does work.the 800khz does not overlap as well.this is just the nature of the two different beams,now back to what you said about getting better results with 455 over the 800 on your lowrance di.if you are using your unit in water with very soft bottom i believe you will get better results with the 455.now before somebody tries to piss on my parade i want to make it clear that this is my opinion only and im not a sonar expert. maybe somebody more qualified may offer some help here. you asked my thoughts well there you have it

I can't tell much difference in 455/800 but then I can't leave the buttons alone either.

Kosmo,

Sonar is nothing but a time domain reflectometer that uses water as a transporter median.

Humminbird Advanced Sonar - : DI Coverage Area im sorry, i believe that im getting off the topic of this tthread but i do believe that this link is very informational for thous wanting to learn the difference between the too

Originally Posted by kosmo

Humminbird Advanced Sonar - : DI Coverage Area im sorry, i believe that im getting off the topic of this tthread but i do believe that this link is very informational for thous wanting to learn the difference between the too

Ive given links to Rickard's study before... He has some very interesting ideas in sonar technology... And mostly way over my level of comprehension....

I especially find interesting his interpretation that fish showing on a DI view are not necessarily where it looks like they are on the screen...(reply 13 & 15) in that thread....

If what Rickard's says is true (about not being able to ascertain where a fish is on DI, but only how far away from the Xducer it is)...then there is a LOT of people fishing with DI view ....that the fish are not even where the fisherman is placing his bait..

Myself... I use 2/d and SI
DI makes pretty pictures to post in forums....

Rickie

Hey, our old buddy Moose1am is in that post! Interesting stuff Kosmo. Rickie, why wouldn't the 2d readings be the same vs. a dedicated DI? Tom can overlay his 2d over his DI and it shows the same picture. Are you saying that fish being shown on an older Hbird that is using the software to create the DI from the SI images are fish that are off to the sides? Or, that all DI's show fish that are off to the sides or not under the boat. I would agree with the software created DI not being able to show fish below the boat. But the newer DI's that have dedicated crytals should show what is actually down there. I can understand a DI image is actually back behind the boat but am trying to figure out what the end point is of the post.