• RECEIVE THE GIFTS MEMBERS SHARE WITH YOU HERE...THEN...CREATE SOMETHING TO ENCHANT OTHERS THAT YOU WANT TO SHARE

    You know what we all love...

    When you enchant people, you fill them with delight and yourself in return. Have Fun!!!

Sign in to follow this  
canman

Is 200khz single frequency good enough for fishfinder?

Recommended Posts

Alright everyone. Is getting a single frequency (200khz) good enough for fishing walleyes? Up to 60 feet of water? What are your recommendations? I want to upgrade and would like some additional advice based upon your experience.

Thanks

Share this post


Link to post
Share on other sites

I think so. But if you're not sure the dual beam models are not that much more money, and then you have the narrower beam if you want / need it.

I used to have dual beam units but never used the narrower beam, my last several units have been 200 khz only.

Share this post


Link to post
Share on other sites

I'm interested in the answer too, since I will be upgrading my transom graph in a year or so.

And it also brings up a question I've had in my mind. Right now I have a dual freq. And I fish primarily on a lake with irregular breaks that can change depths very quickly. Most of the fish are on outer weedline in 16-22 feet.

Last year I ran it at a wider cone angle so I would have a better chance of marking fish. But if I'm understanding how it works correctly, the narrower cone angle would be more accurate to the actual bottom depth directly below me. Disadvantage being I will mark less fish with smaller cone. Is this thinking correct? If so, I would could troll more accurately with the narrower beam.

Share this post


Link to post
Share on other sites

Solbes I’m thinking you are correct. The way I understand it is(someone please correct me if I am wrong) the higher frequency signal(i.e. 200kHz) gives a more narrow "cone angle" and a lower freq (i.e. 50kHz) gives a wider cone angle.

The 200 then gives more detail over less area where the 50 would give less detail over more area. The lower freq also does better at penetrating deeper water. I was told, when using a 200kHz you will see an area about 1/3 of your depth. So, for all you math whiz's, in 30ft you will see about 10ft circle. (and in 12ft only a 4ft..not very much)

For fishing walleyes in 60 ft or less, I would think a 200kHz would be everything you need and then some. However, I do think running a split freq screen would give you a better idea of what’s happening down there. I am looking to upgrading to a dual freq 200/50 ducer for that purpose and for better tracking of rigger balls at depths of 100ft+ (more for salmon, not walleye). My main unit is a LCX27, which has dual freq capabilities but only came with a 200kHz skimmer transducer.

Share this post


Link to post
Share on other sites

I'm not 100% positive, but I think kHz measures power put out by the unit and the cone angle is measured in degrees. Dual frequency may have more to do with rejecting interference.

When you are reading your depth finder, the number of feet it tells you you are at is the shallowest reading it decifers. For instance, if you are on a flat and it reads 30 feet of water, it is pretty close. If you are along a steep break where the bottom falls from 30 feet to 40 feet within the cone angle, you might be in 35 feet. This would have to be a very steep drop since you are reading about a ten foot difference within a ten foot circle.

I thought about this a minute and "googled" how a fish finder works. The top result of that search gives a pretty good tutoral about how these things work. I think I'm partially correct, but check it out.

Share this post


Link to post
Share on other sites

The lower khz (ie. 50) will have a narrower beam, so if you're on a steep break you will have less of "dead zone" with the 50 than the 200. But in 16-22 feet you're not talking about a very big difference in the cone size. I still prefer the overall performance better with the wider beam 200 khz ..... but like I said earlier, the dual beam models are not much more money so if you think you might want to use the dual beam it's not a big deal to get it.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

  • Your Responses - Share & Have Fun :)

    • big dave 2 and leech, darn good lookin meals!!!!  Dave have a good weekend!!!!
    • Ok Dave have a good weekend. Hope you get over the whole butt hurt Leech deal! Not sure where you got that I don't like folks smoking or grilling things?  I know I do enough. Have fun! 🙂  
    • Heavy rains across northwestern Wisconsin last weekend and early this week have flooded some roads and caused washouts on some highways, roads, state parks, forests and trails. According to the National Weather Service the area has received 7 to 12 inches of rain from Friday through Monday.Several park system property or portions of properties are closed due flooding. Amnicon Falls State Park, closed temporarily but has reopened, though some roads, trails and observation areas remain closed. Pattison State Park is open for camping only; all trails, observation areas, picnic and day-use areas are closed. There are washouts on the dam that forms Interfalls Lake and Highway 35 over the dam is closed. A campground and horse trail are closed at Governor Knowles State Forest and the day use areas along the river at Interstate Park are underwater.Water was roaring over Little Manitou Falls at Pattison State Park.Photo credit: Gervase ThompsonAll rivers in the region are running extremely high. The falls at both Amnicon and Pattison are roaring, but road closures mean observing the falls now is challenging. The Bois Brule and Flambeau rivers are high enough that some canoe launches and campsites are underwater. The water is making its way downstream and the Lower Wisconsin River is running very high with all sandbars submerged and canoeing and kayaking not recommended. The river is expected to crest Muscoda this weekend at 40,000 cubic feet per second. .
    • I'm still going to smoke this fatty while camping this weekend whether Leech likes it or not.....😋       See you fellers on Monday........
    • Rick didn't like all the "My Grills bigger and better then yours" posts!  😅
    • We switched to a new server. Had a glitch in our dB that lost a couple days of posts.
    • I ripped a hole in one of my favorite pairs of fishing shorts just need a decent sized patch to cover her up
    • I am not sure what happened either but we lost all of the posts last couple days not just this thread. And it looks like the same thing happened over on FM site as well. I know the site was down last night while I tried look at it.
    • We had no problems but only brought 10 extra gallons over.  We fished 5 days, pretty much running wherever we wanted and ended with 7 gallons remaining in the boat.  So, we burned 30 gallons of fuel in a 1785 Lund with 90 hp Mercury 4 stroke.   I thought that was pretty good!
    • Seems to me that we are missing an entire page from this thread that was here yesterday.... what gives?