Thread: Down Imaging vs Side imaging vs neither

I believe the pennate shape of the HDS side signal is of a lesser angle than HB, thus the HDS effective distance coverage could be less overall.

Originally Posted by Cane Pole

I believe the pennate shape of the HDS side signal is of a lesser angle than HB, thus the HDS effective distance coverage could be less overall.

Do we know (or can we find) what the "pennate shape of the HDS side signal" is...??

Rickie

Great thread. Am runnin HDS 8 and HDS 10 linked with E net, LSS 1 module and Structure Scan. Have always had Lowrance and these units are tops. HDS 10 gives great separation of targets. Mine are Gen 1, the Gen 2's are out and give a structure overlay on chart. Not an important feature for me. I winter fish a lot and if I find a brushpile, I mark it. Got HDS 8 on bow. Can display my boat position relative to marked pile and stay right on top of it. No bouys, no wet hands. I don't have donut on Lowrance

Well....you guys did it. YOU LOST ME!!

I'm looking real hard at the Humminbird 798CI SI. I'd like to be able to use it to locate brushpiles and other structure, locate schools of shad, and scan known or recently found brushpiles for fish. Will this unit do what I'm expecting of it?

Originally Posted by archer66

Well....you guys did it. YOU LOST ME!!

I'm looking real hard at the Humminbird 798CI SI. I'd like to be able to use it to locate brushpiles and other structure, locate schools of shad, and scan known or recently found brushpiles for fish. Will this unit do what I'm expecting of it?

Yes.

On GPS, ALL UNITS has up to 20 feet of variance in either direction no matter what the company say. Park your boat on bank and GPS will move while boat is still.Thats why when with one rod and need to make acurate cast I put out marker,otherwise you are fan casting which I do not want to do,Crappies have a sweet spot most of the time, that is why one can make a strike on each cast when that spot is found and the other guy casting 5 feet away only get a bite now and then.Too many think when on brush that as long as they are around the brush then if fish are their then he should have hit his bait,after all same bait ,count down and wind at same speed as partner,it just don't work that way,and when partner get hit I look and then my bait will somehow go where he had a bite even if he miss fish.No intent for downing anyone but many read this board and this will help there catch to improve and not the partner get all the fish

Genec, There while there may be a possible 20ft variance, I can sit on a brushpile, watch the waypoint, and 2D, or DI, and It's all there, just how it should be.
The LGC-4000 is working like it should.

Archer66, you should do some reading, and make sure the GPS will do what you want before you spend the money. This is a topic that's covered a LOT. Search for humminbird Project donut, here or google, and you'll find it.

When I look at this SS "cone" angle chart http://www.bassfisher1.zoomshare.com...ngle_Chart.pdf , yes I know SS is not a cone but a thin slice, it appears that 455 is at between 70 - 75 degree angle. The 800 is between 60 and 70 degrees. Not easy to tell from this chart if the beams overlap directly under the boat. Using a line perfectly horizontal to the waters surface and a line perfectly vertical from the center of the TD down to give 90 degree total. the 455 SS beam has the missing degrees from the top down, HB 455 beams are 89 degrees with the missing 1 degree at the bottom up. From the chart I believe the SS 800 beams have a missing degrees from both top down and bottom up, the HB 800 beams are 59 degrees again with the difference from 90 being from the top down.