*THE HULL TRUTH is the world's largest FREE network for the discussion of Boating & Fishing. Whether you're researching a new boat, or are a seasoned Captain, you'll find The Hull Truth Boating & Fishing Message Forum contains a wealth of information from Boaters and Sportfishermen around the world.
Welcome to the updated THT!
If you are having trouble signing in, please email feedback@thehulltruth.com with your username and we will help you. We thank you for your patience as we help you access the new site!
Random Quote: No man has lay on his death bed and wished he spent more time at work
Pastaman,
I've not had the pleasure of meeting captain Burt but have heard his name.
Birdman,
I believe it was an accidental discovery. When the Santee-Cooper Reservoirs in S.C. were under construction, Striped Bass that were making their spawning run up the Santee and Cooper Rivers became trapped or something along those lines.
Interesting, never knew there were fresh water striped bass.
On the left coast in our desert lakes (Mohave, Mead, Powell, Havasu, Silverwood, etc.) we have a huge fresh water only striped bass fishery. They get fat on our stocker rainbow trout.
__________________ SoCal : Twin Vee 26' Express "MamaMia", 14' Novurania and 9' Zodiac tender
close to zero I guess you cant read the posts all over the net? sorry charlie them figures are definatly made up.
Sure, I can read, can you? Then re-read my post. I simply stated what Jim @ BoeMarine said, and he's a guy who has sold a lot of HDS. In case you doubt, here is his post here on THT:
quote:
"The reliability of the HDS units has been nothing short of remarkable. We sell a LOT of them, especially to members on this forum. And I can honestly say there has only been 1 or 2 that have come back out of hundreds (in fact I can't remember any coming back but there must be one or two!). If that statement isn't honest then those customers that returned them can let me know on this thread. No other product line we have carried has had this kind of success. One thing is for certain, Lowrance owns the 5-7" market.
__________________
Interesting, never knew there were fresh water striped bass.
Should there have been no rain for some time, Rock will find their way from the salty Chesapeake into the freshwater rivers and tributaries that empty there. Living on the uppermost reaches of the Nanticoke, hot dry summers would produce Rock 40 miles upstream that has become brackish.
So how did Lowrance come up with DownScan? Did they purposely create a 3 way transducer for 455/800 only, or did they accidentally put a high, elongated frequency into a ‘combo’ type transducer like the Humminbird’s Hi-Def SI?
I believe the latter to be true. And you know what? I don’t care. Anglers around the world are going to benefit from this amazing technology, accidental or not. I have used the DownScan by Lowrance, and it is AWESOME! Not so good for my sonar courses though, because it takes all the ‘interpretation’ out of the picture. And a large portion of my course is on interpretation.
So to answer your question JayDee:-
I think Humminbird is just going to manipulate the frequencies going to the ‘mid-range’ in the same manner that I suspect Lowrance did it.
There sure are a bunch of ‘ifs and buts’ in this post. I apologize in advance if I’m off course here.
Quote from the Lowrance site: "The shape of the crystal determines both its frequency and cone angle. For round crystals (used by most sonar units), the thickness determines its frequency and the diameter determines the cone angle or angle of coverage"
Mr. Birdman,
I don't disagree that Stripers belong in salt but considering the VDGIF stocks them locally and that I'm around 300 miles from the coast, I'll take it!
I don't need SS to find fish either but it's really helpful in finding them or relocating them if you loose the school.
You may not need downscan. But those hooks on that Garmin are ugly lookin.
Actually its a good shot and if If you look closely the fish where actually in motion at the time of the photo. Nice job Birdman. Is this with the new update (5.4)? Arches not bad at 200kHz at 8 degrees as you do not get good fish arches unless you have a transducer cone angle at greater than 19 degrees.
Essentially it's the v5.4, but I had a slightly newer beta version for the GSD22 installed. Garmin's still workin on that software. Obviosuly getting much better too.
The fish were moving a bit, but I was moving also about 8 knots when I snapped that shot. I've been getting some nice looking arches on 50k. I used to only use the 50k when offshore in deep water, until somebody here suggested using it all the time since it has a wider beam. Wow, what a great idea, now I love it, I use dual freq mode almost all the time, I get more coverage on the 50k side, and more detail on the 200k side.
Rolngthun, What do you mean "hooks"? If you mean those are hooks on the returns, no. I didn't have any gear in the water at that time.
No they are not bad. Just looks different compared to what I am use to. They look thicker than I am accustom to, that's all. I was referring to the fish. You can tell it is fish, that is the important thing.
Essentially it's the v5.4, but I had a slightly newer beta version for the GSD22 installed. Garmin's still workin on that software. Obviosuly getting much better too.
The fish were moving a bit, but I was moving also about 8 knots when I snapped that shot. I've been getting some nice looking arches on 50k. I used to only use the 50k when offshore in deep water, until somebody here suggested using it all the time since it has a wider beam. Wow, what a great idea, now I love it, I use dual freq mode almost all the time, I get more coverage on the 50k side, and more detail on the 200k side.
Rolngthun, What do you mean "hooks"? If you mean those are hooks on the returns, no. I didn't have any gear in the water at that time.
Lots of people in deepwater use 50k to find the fish and then 200k to place the boat directly over them. If you have 50 and 200k split its possible to see fish on the 50k side and not the 200k side. When you see fish on both sides you know you are directly over them. Nice snap shot.
On a different note I have seen pics in freshwater that look exactly like your pic above but under further review with the down scan it turned out to be brush piles. Downscan is going to change a lot of things.
__________________ 2006 Skeeter ZX24 Bay
2006 Yamaha 300 HPDI
2010 Ford F-150 FX4 5.4
Team: EAT-SLEEP-FISH---~ <)))))<
Trying hard to become a 1%er www.ramseydoor.com www.raynoroverheaddoor.com
Last edited by pastaman1234; 11-09-2009 at 06:31 PM.
The Garmin definitely has a clean background display, free of clutter. I've never fished over a Garmin but If I had seen that on the screen I would definitely be dropping some bait or jigs, that's for sure!
What an interesting weekend with the Lowrance StructureScan™ (LSS-1) on Inanda Dam. Due to the windy conditions on Friday afternoon, I was restricted to a little bay just before Joe’s Banks. Inanda Dam - KZN - South Africa
Step one was to turn the transducer around on the mounting bracket so that left was left and right was right. You have no idea how confusing this was when I first got to test the LSS-1.
Step two was to create a ‘known structure/cover’ and see how the LSS-1 ‘sees’ it. I wanted to use something light (branch attached to base to keep it upright), that will make it difficult for the LSS-1, because we know it works great on the big heavy stuff (like the stump on the left).
While in left and right side scanning mode, the ‘known structure’ was clearly visible in the water column, also note how clear the spawning beds are. Like dimples on a golf ball.
When searching from a distance, this light structure is not visible at all on the StructureScan, as suspected.
But once passed over in the DownScan mode with a split screen 200kHz view, it becomes VERY clear.
Saturday 14th:- The next exercise was to go over a known tree in Rocky Bay. Due to the water level having dropped by around five feet, this tree is now visible from the surface in the clean water and is in about 24ft of water. The tree and a couple of predators were quite clear in this 83Khz image. But I had no idea what I would find once changing over to DownScan …
I couldn’t believe my eyes when I first spotted this tree in DownScan, the detail was just amazing, and not to mention the fry shoaling around the main branch on the left. The predators could also be seen hanging around the tree and in the tree.
After a couple of passes with a Norman DD14 Tennessee Shad I managed to pick up one of the fish a few metres off the tree. You can see the tip of the tree from the surface in this image.
Here’s another great shot of the fry in this tree …
I then remembered another similar tree in Barbel Bay, so I headed off that way to see if the tree would be similar to the one in Rocky Bay. On my way there, slap bang in the middle of the bay, in 50ft of water I came across this showing on the DownScan and immediately took a waypoint (64).
I then changed over to 83kHz on the Broadband and voila, fish everywhere! I took another waypoint in this mode just to be sure (65). These fish seemed to be suspended above an old field of bushes in 50ft of water. On my second pass I noticed that they had moved down a little deeper. I threw everything but the kitchen sink at these fish and I could not get a nibble. I then thought it might be carp or bream, so the only way to find out was to send my camera down on video mode.
Check out this video, unfortunately the original sound track got lost. It was quite classic, because you could actually hear when the camera’s seal went and you could hear it leaking. The Optio W20 is only meant for 3 metres maximum, and I sent it down to nearly 40ft!
Fishton..........Those are some incredible images!!
__________________ 2006 Skeeter ZX24 Bay
2006 Yamaha 300 HPDI
2010 Ford F-150 FX4 5.4
Team: EAT-SLEEP-FISH---~ <)))))<
Trying hard to become a 1%er www.ramseydoor.com www.raynoroverheaddoor.com
And ya don't need no stinkin "sidescan" to find em!! 
