Get to no your Sonar to catch more fish

[liketrolling]

Boat fishing should start to pick up
are the fish on your rt are left side are under the boat.

Transducer Beam Angle Calculator

http://www.furunousa.com/LearningCenter/...lator.aspx


sonar beam’s cone angle
For example, the 200 kHz sonar beam of a Humminbird sonar/GPS combo

has a cone angle of 20 degrees.
From the angler’s perspective, this 20 degree beam will interact

with a circular area of the bottom, the diameter of which is

approximately one-third of the depth of the water. In other words,

in 21 feet of water, this 20 degree, 200 kHz sonar beam will

interact with objects that are within a 7-foot diameter circle on

the bottom
The 83 kHz beam of Humminbird’s dual beam sonar systems has a 60

degree cone, which results in a much larger coverage area. For such

a large cone angle, the circular area on the bottom that the 83 kHz

sonar beam interacts with will have a diameter that approximately

matches the water’s depth; in 21 feet of water, the circular area

on the bottom will be approximately 21 feet across.

20 degree, 200 kHz sonar beam will show 35 feet at 100ft down
26 75
20 200 18 50' down
11 30
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60 degree, 83 khz show 115 feet at 100 ft. down
87 75'

60 83 show 58 feet at 50 ft down
35 30
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Snapshots to learn from
Fall turnover – pic heavy
http://www.bbcboards.net/showthread.php?...hing+heavy

Catching Pre-Spawn Fish
http://www.bbcboards.net/showthread.php?...Spawn+Fish

Vertical Fishing with Switchfire 2D Sonar "Going Red":
http://www.bbcboards.net/showthread.php?...+Going+Red

Switchfire Sensitivity Comparison
http://www.bbcboards.net/showthread.php?...Comparison

Sizing Data with Down Imaging
http://www.bbcboards.net/showthread.php?...ta+Imaging

Side Imaging Enhanced Sharpness
http://www.bbcboards.net/showthread.php?...+sharpness

Thermocline Article
http://www.bbcboards.net/showthread.php?...hermocline
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[Quicky]

Very interesting. I did not see how you can tell which side of the boat the fish are on with only down imaging. I do not have side imaging so it would seem that it's pretty tough. I guess running dual frequency can let you know relative distance from the center of cone. The thermocline article is also interesting and I would like to see if there are similar studies done specifically for Kokanee.
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[liketrolling]

there is a lot you can find by googling Kokanee

I have found that Kokanee find water in the summer when the water turns over that is
52 to 54 deg. , I find that Temp. and put one downrigger where ever that is.
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[PACMEN]

How are you finding what depth this 52 to 54 deg. water is?
Surface temp. is easy but deeper?
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[liketrolling]

[quote PACMEN]How are you finding what depth this 52 to 54 deg. water is?
Surface temp. is easy but deeper?[/quote]

with this it has got me a lot of fish, but the cost has gone up
http://www.fishhawkelectronics.com/marin...wk-td.html

I have had one for 3 years.
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[smittyts]

I'm a little dizzy after all that. My kids and I sure enjoyed spending the day with you last year and catching some fine kokanee. You have an amazing set up and the know how to make it useful. I hope you have some great trips ahead of you this season.
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