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Author Topic:   Fish finder vs VHF
70_Katama posted 05-26-2001 04:19 PM ET (US)   Profile for 70_Katama   Send Email to 70_Katama  
My fish finder when powered on disables my hand held 5W radio. All I hear is the "noise" on all chanels from the finders pulse and the scan fucntion won't work. Is there a way I can shield my hand held with an after market product?
Radio = Hummingbird VHF5
Finder = Raytheon L365

Thank you

Dick posted 05-26-2001 06:34 PM ET (US)     Profile for Dick  Send Email to Dick     
I have the Raytheon L365 fishfinder also and it doesn't bother my dash mounted VHF. I have never used my hand held on the boat so I just went out and tried it. A Raytheon 100, with the fishfinder turned on the handheld functions fine even setting against the fish finder. Scans allright too.

I am mystified.

Dick

70_Katama posted 05-26-2001 06:41 PM ET (US)     Profile for 70_Katama  Send Email to 70_Katama     
Dick

What did you do with the excess transducer cable? I have mine looped and tied under the console.
I wonder if I should burry the excess in the canal with the other cables?

Dick posted 05-26-2001 07:36 PM ET (US)     Profile for Dick  Send Email to Dick     
My excess cable is also looped and tied under the console.
The old flashers used to cause electrical interference but I have never had it happen with any of the modern units.
I am at a total loss on this one.
Good Luck
Dick
triblet posted 05-26-2001 08:17 PM ET (US)     Profile for triblet  Send Email to triblet     
My Humminbird Wide 3D Paramount doesn't
bother either my handheld HF (Standard
Horizon HX350S) or my console mount VHF
(Standard Horizon Spectrum).

Something's really wrong, especially if it
makes the VHF stop scanning. My first guess
would be power supply noise, but the VHF is
running off it's battery.

I'd try a buddy's handheld first. It it
messes that up too (I suspect it will),
complain to Raytheon.

Chuck

Novice Dave posted 05-26-2001 10:08 PM ET (US)     Profile for Novice Dave    
70_Katama we have a problem.

I also have a Raytheon L365 and a Humminbird VHF5 and hear a static pulse every second with the L365 on and none with it off. The VHF5 is not attached to the boat power or ground so I think it is radiated noise from the L365. If I move the VHF5 over 3 feet away from the L365, the noise pulse stops.

The VHF5 seems to be suseptible to the noise where other radios aren't...Raytheon and Humminbird may just blame each other.

70_Katama posted 05-26-2001 10:21 PM ET (US)     Profile for 70_Katama  Send Email to 70_Katama     
Dave

Same thing. I can use the radio from the bow with the finder running. I think were screwed on this one. I'm going to make some calls, but I dont expect much. If I find anything worth while I'll let you know.

Thanks for all the input.

Novice Dave posted 05-27-2001 01:38 AM ET (US)     Profile for Novice Dave    
I think I'll return my VHF5 radio to West Marine and get a different one.

It appears the Raytheon 100 works with the L365.

Tom Byrum posted 05-27-2001 01:46 AM ET (US)     Profile for Tom Byrum  Send Email to Tom Byrum     
I had a Raytheon finder that caused the same static on both of my radios. (handheld Icom and regular Icom) I sold it and bought a Sitex and it had the same problem. I sold the Sitex and bought a Furuno and the problem went away.
70_Katama posted 05-27-2001 09:41 AM ET (US)     Profile for 70_Katama  Send Email to 70_Katama     
BoatUS will credit my account for an exchange on a new radio. I'm going to install a fixed mount.

Thanks

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