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Doryman
Joined: 03 Oct 2006
Posts: 3807
City/Region: Anacortes
State or Province: WA
C-Dory Year: 2006
C-Dory Model: 255 Tomcat
Vessel Name: Lori Ann
Photos: Lori Ann
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 Posted: Wed Mar 07, 2007 3:51 pm Post subject: |
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| tpbrady wrote: | | I lose the bottom with my Lowrance mainly in water over 300 feet when I am moving greater than 15 mph. It may be disturbance caused by water flow but I suspect some other issue since the shallower the water the faster I can go without losing the bottom. |
With my previous boat, a 22' Hewescraft, I had the same problem with my Lowrance unit except that I lost the bottom over about 10 mph, at any depth.
That was one of the major reasons I insisted on an Airmar in-hull transducer on the Lori Ann. Thus far, it has worked perfectly at all speeds and depths.
Warren
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Doryman
M/V Lori Ann
TomCat 255, Hull #55, 150 Yamahas
Anacortes, WA
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tpbrady
Joined: 08 Feb 2005
Posts: 891
City/Region: Anchorage
State or Province: AK
C-Dory Year: 2005
C-Dory Model: 25 Cruiser
Vessel Name: Bidarka II
Photos: Bidarka
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| Posted: Thu Mar 08, 2007 12:12 am Post subject: |
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Bill,
Hi/lo frequency didn't matter. It loses the bottom at speed. Thru hull may solve the problem plus getting it further away from the motor.
Tom
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Tom
22 Cruiser Bidarka 2004-2009
25 Cruiser Bidarka II 2010-2013
38 Trawler Mia Terra 2012-2015
42 Nordic Tug 2015-
28 KingFisher 2009-2014
14 Jetcraft 2000-
17 Scanoe 1981- |
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