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Bought a 798 with compact trans. Took it out today to give it A try. Looked good but want to get the most out of it. Baitfish everywhere but couldn't find any brush or much structure at all. What's some good settings to start out at. I live in sc and the lakes ain't to muddy right now. Here's some screenshots from today
FRST OF ALL ,GET YOUR SIDE DISTANT TO NO MORE THAN 60 TO 75 FEET ON SMALL UNIT.NOW AS YOU GO OVER A AREA YOU LIKE,HIT CURSOR AND STOP MACHINE,THEN HIT MENUE AND THEN ADJUST IT UP AND DOWN TILL YOU LIKE THE SETTING,THEN GO TO ANOTHER SPOT AND DO THE SAME,AND AS FOR SEEING BRUSH PILES THAT ARE NOT IN WATER COLUMN,THEY CAN BE HARD TO SEE IF THEY ARE OLD,YOU WILL NEED TO TRAIN YOUR EYES TO LOOK FOR A LITTLE WHITE WITH A SHADOW BEHIND IT,MANY TIMES IT WILL BE THERE BUT UNTRAIN EYES WILL OVER LOOK IT,PRACTICE,PRACTICE,PRACTICE IS NO SUBSITUTE FOR IT,GO WITH OTHERS WHO HAVE SI ,DOES NOT MATTER WHAT BRAND
*Beam Frequency 200kHz ...unless you want to see echoes from farther than directly under the boat ...then use 83kHz or 200kHz/83kHz ...(you can set the "Transducer Select" menu under the Sonar tab to "Dual Beam" to eliminate the 2d pixelation issue but you won't have SI or DI images until you set it back to "SideScan")...
*Switchfire Clear for depth less than 10ft ... and adjust Sensitivity up to an acceptable amount of clutter on the screen ...
*Switchfire Max for depth more than 10ft ... and adjust Sensitivity down to an acceptable amount of clutter on the screen ...
*Noise filter under Sonar tab to "Off" unless there is RFI showing on the display ...
*Max Depth under Sonar tab to 10ft deeper than any water you may be in ...
*SI Sensitivity up to brighten screen ...
*SI Sensitivity down to darken screen ...
*SI Contrast 10-12 ...adjust up to make structure echoes more visable ...
*SI Sharpness Off ... adjust up to make fish echoes more visable ...
*Chart Speed higher for 2d ... Match boat speed for SI/DI ... (No..there is no separate Chart Speed for each at the same time ... Darnit!!!...)...
*Palette choice to suit your eyes ... Blue for cloudy days - Green or Inverse for sunny days ...
Like Gene said ... Shorter "SI Range" ... 50-70ft (sometimes less for enlarging structure images of stuff closer to the boat)...
Put a waypoint on anything that looks out of place in the SI image ... And then re-position the boat to scan that waypoint closer to the boat ...
Rickie
Thanks Rickie. Saving to iPhone NotesQuote:
Originally Posted by rnvinc
-danny
Thanks a lot great info. I was gonna ask why the 2d looked like that.
The 2d pixelation issue is/was a HB management decision ...(good for some - not so good for others)...Quote:
Originally Posted by goodoleboyz250
83 khz issue from a little "birdie"
It is what it is ...
Shutting off the 83kHz helps some ...but ...
The best workaround to date (from user's experiences and HB's recommendation) is to set the "Transducer Select" menu to "Dual Beam" and use the unit strictly as a 2d unit when using 2d ...
Rickie
If I use the y cable and the ducer from my 385 will that work
I would have to defer to Greg on the 385 because I don't know the pin configuration of the cable connector ...Quote:
Originally Posted by goodoleboyz250
But using the AS SIDB Y cable and any other 2d xducer will not eleviate the 2d pixelation issue ...
The pixelation issue is a "conflict of interest" between the SI processing and the 2d processing ...
The recommended "Dual Beam" setting shuts off all the SI (and DI) processing ... So the "conflict of interest" is null ...Leaving the 2d to work without issue ...
Rickie
Oh ok I was thinking it was a issue with the ducer thank you
Do all si units have that issue
All SI units with newer software than 6.570 ...Quote:
Originally Posted by goodoleboyz250
Remember, the pixelation issue can be minimized by not using the 83kHz ...
And the pixelation issue can be eliminated by setting the "Transducer Select" menu to "Dual Beam"...
Rickie
Not sure but thought there was a recommendation of also using a chart speed of 5 or less to minimize the pixelation. That would be in lieu of changing the Transducer Select to Dual Beam. But many like to run chart speed at max when vertically fishing to be able to get the faster data. The 200/83khz and FishID will still work if you can live with the pixelation issue. As mentioned changing the Transducer Select to "Dual Beam" seems to be the final HB solution to the problem for the older core units.
Updated shots
Boat ramp, old bridge, creek channel but what's the cloud on the left , bamboo brush guess because of its leaves and thickness best shot I could get, more brush I think but what's the screen do cloudy
The cloud is most likely prop wash from either you passing thru your own path or the prop wash from another boat ...
Bubbles reflect sonar ... Prop wash is bubbles ...
Your images look great now ... :ThumbsUp
(You have a blockage of some sort just to the left of the centerline ... Most likely your lower unit ... But I wouldn't worry about it ...because it's unlikely there will be any fish or other "good" echoes that it covers up that close to the xducer anyway)...
Rickie
Must be cause I kept turning around and checking that area but I didn't think the bubbles would stay that long. . How about the bamboo. Does it always show like that when it's new
I'm no expert, but that doesn't look like bamboo to me. How about some weeds? Could that be what that is? When you get a good pic with DI, you will be able to pick out each individual branch on a tree, or each bamboo cane in a bunch.
What you think is bamboo seems to be an optical illusion of the same prop wash you are seeing in the SI image posted just above the DI image ...
The HB SI units derive the DI image from the data received by the SI piezoes ...
And because sonar echos are plotted as "distance away from the xducer" ... The prop wash "distance away from the xducer" is painted in the SI image as "x feet left of the centerline"...whereas that same rendering into the DI image is painted as "x feet below the top of the display ...
Take the left SI pane in the SI image and rotate it 90° counterclockwise ... And you will get the DI image that looks like the bamboo DI image ...
Rickie
I dropped boo right there so pretty sure just didn't understand why it showed like that. . This is what one of my fresh piles looks like on my 570
Rnvinc idk kinda looks like it
If you indeed dropped bamboo in that area ... I don't think it is showing in any of those images ...
(Except the image from the 570 DI)...
Rickie
That bridge is cewl looking structure ...
Post more images of that when you get back to the same area ...(maybe at some different angles)...
Rickie
Yea think your right on the prop wash. . Ok I will try to get more next time. Thanks for the help
Bamboo is very distinctive looking.....tight at the bottom and spreading out at the top with individual canes appearing. All that is visible in your last pic. If you look closely in your last view of the grouping you posted, you can see a lay-down on the right side of SI (shows up as a brush pile in 2D view), and what might be bamboo on the left SI. So it may be that is the pic with the Bamboo? I'm guessing you were in the same area?
There is also a spot nearly off the screen on left side SI that has the shape of bamboo and some corresponding vertical lines on right side SI. That might be the 'boo