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Posts: 317
Location: Grafton, WI | I have a Minn Kota PD/US2/AP connected to a Humminbird 383c, and getting horrible interference. I've tried the ferrite cored power cables, and run through all of the troubleshooting - guess I have a combo with a permanent issue - which from investigating happens with some Humminbird units.
I have an LMS unit I can use instead, but want to see if I still get the interference.
I'm in Grafton - if you're in the area and can assist, I'd appreciate it (and could have a cold beverage waiting...)
Edited by esoxsmd 5/24/2012 5:33 PM
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Posts: 433
Location: Cedarburg, Wisconsin | Try moving the bird farther or closer to the t-motor and check for increased or decreased interference. If the interference is coming through the air, a ferrite on the power cable isn't going to help much. Then only distance will help.
Check to see whether the power cord for the bird is running parallel (or close) to the power cord for the motor. If it is, try moving it to cut down on coupling.
I've knocked out some interference on past units I had by putting a filter (cap and resistor tuned for the frequency of the t-motor) across the battery leads of the locator at the battery.
Is the bird on the same battery as the t-motor? If so, try putting it on the battery for the big motor. If no big motor battery, just borrow another battery to try powering the bird to see if that's the problem. If your t-motor battery is dropping too much voltage when the t-motor is running, the bird will be unhappy as it's designed for a minimum supply voltage and it's feathers will be all tied up in a bunch.
Can you try another transducer on the bird? Does that get rid of the interference? I had a US on a Lowrance that sent interference through the transducer cable and the only fix for that was a different US unit for the t-motor.
I'm in Cedarburg, but don't have a bird on my boat, so that's no help for parts to try.
Edited by Almost-B-Good 5/25/2012 7:02 AM
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Posts: 317
Location: Grafton, WI | I've gone through all the troubleshooting - the wires are run from opposite directions, they are on seperate batteries, tried a different transducer (but that didn't give me any interference) & moved the locator up to 3' away.
I had the same wiring with my older US1 and a Lowrance, without any interference.
Just looking to rule out everything - last step, try my Lowrance. |
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Posts: 433
Location: Cedarburg, Wisconsin | The only other thing I can think of other than the US itself, is the adaptor cord from the US to the bird. I assume the Lowrance adaptor is a different one? Grasping at straws, but there is a remote possibility the adaptor might be causing it. Hardly worth getting a new one to try though. If you could borrow one that's about all I can think of, unless maybe you could try wrapping the adaptor section in aluminum foil to block some of the radiated noise and seeing if that makes a difference. Cheap and just might give you a clue if the bird displays better that way. Most of the time I've seen a shielded cable grounded on one end make a positive difference in radiated noise situations. Just don't short out the cable adaptor if it has bare metal that the foil can touch. Give it a wrap in tape first. Good luck. Been where you are and it drives you nuts trying to get rid of the noise. Probably boils down to either the t-motor or the bird, and that is hard to swap out units one at a time till you find the culprit unless you can find a buddy with the same stuff who'll let you borrow them. Sorry I couldn't help more. |
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Posts: 317
Location: Grafton, WI | That's why I'm looking to see if someone has Lowrance US2 adapter so I can give it a try.... |
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