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Old 06-01-2003, 04:13 PM
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Default Humminbird Cable Repair

Hello all,

Any EE's out there?
I had to cut the end off of the cable going from my fishfinder to the transducer (Humminbird Phiranna2) to get it through the transom opening. Can I just splice the wires together and expect it to work? It looks like a shielded high-frequency cable. The specs say the unit operates at 200khz. Does the signal travel through the wire or just bounce around inside the shielding like a wave guide?
Any suggestions?
I'm going to take a shot at it anyway and I'll post my results.

Thanks,
Charlie

[This message was edited by charlieft on 06-01-03 at 07:22 PM.]
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Old 06-01-2003, 07:03 PM
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Default Humminbird Cable Repair

OR...has anyone patched one of these cables? If so, did you have to do anything special?

Thanks,
Charlie
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Old 06-01-2003, 08:15 PM
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Default Humminbird Cable Repair

The best thing i can tell you is to strip the wires back,twist the same colored wires together and tin them together with a soldering iron for a solid connection.Do 1 at a time and put a small piece of shrink tube on(can get it at any car parts place).After all conections done either use a larger shrink tube or wrap it very tight with electrical tape.(shrink tube best option my opinion)Hope this helps
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Old 06-03-2003, 05:29 AM
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Default Humminbird Cable Repair

Re: fish finder cable splicing. I have attempted this twice with no success and purchased new transducers each time. The cable impedance is changed with the splice and you will get poor performace as a result. Believe it or not, the boat dealrship that rigged my Dad's new seacat cut the cable on purpose to route it through a small hole. When we took the boat out for the 1st time the readers were very erratic. Our investigation revealed the splice. New transducer solved the problem. Simply put, with that much power (watts) being transmitted down the cable you end up with unwanted "reflections" that cause flakey readings. 1 thing you might try is to use a connector at the splice point that has the correct impedance. This will not work under water though and may not work 100% like a new transducer would. Godd Luck!
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Old 06-03-2003, 08:37 AM
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Default Humminbird Cable Repair

THanks for the info linebacker. I suspected that there might be a problem. I cut the end near the display, so I may be able to splice a new end directly onto the cable instead of splicing the two pieces of cable together. I also sent my question to Hummunbird. I'll post my results.
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