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Aren't there rules against advertising on this site? There are many neighborhoods who don't allow physical fences as part of their covenant so no, you aren't better off getting a "real" fence. This is a good instructable that could save a lot of time and headache for someone.
How to find a break in an invisible dog fence
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It worked for me! I wish I had a stronger radio though
Thanks for this Instructable. We found the break and our Beagle is happy to be off the chain.
Your local AM radio stations may or may not be close on the dial to the frequency the dog fence broadcasts. A cheap-o AM radio might work better than an expensive model (less sensitivity and less adjacent-channel rejection on the cheap model). YMMV so try different radios.FWIW, the purpose of a choke is to pass DC current (measured in volts, so the fence system thinks a wire is shorted across the terminals) while blocking any AC (the noisy part that shows up in the radio is NOT shorted out, so it continues down the buried wire). You can make one -- it's just a coil of wire. Google it. Perhaps this system uses a constant DC voltage to test for continuity through the buried wire, and an AC signal (the "noise" you hear) to trigger the dog collar. A break would cause the beep that tells you the wire is broken (DC missing in the wire loop) and so you fool the system with the choke so you can test with the AM radio. Simply shorting the wire could diminish the signal to the radio, but I'd obviously try it and see if it's loud enough to do the job.
FORGET THE CHOKE. You don't need it. Just use a piece of wire in place of the choke and follow the instructions as provided. I plugged both a short piece of wire and the broken perimeter wires into the control box and it sent the 600 mHz frequency out the lines that was detectable by an AM radio tuned to 600. I have just over 1/2 acre inside my perimeter. Maybe the choke is useful for longer runs, but I did not need it.
With the RF choke the collar still works. I taped the prongs and used it.
Wow!!! Can't thank you enough for the detailed instructions!!! They were perfect - my luck was not so much. The hard part was finding an AM/FM radio - got stuck walking around with a hulking desktop radio from Target. With close to 2000' of wire, I started on the end that seemed the most vulnerable - I found the break about 150' from the opposite end, where the kids buried a dead bird. On the bright side, the large radio picked up a strong signal and I found the break on the very first dig - on the flip side, I had to listen to Rush Limbaugh for half an hour. :D
Thank you so much for posting this it saved me a fortune. I was able to get the RF choke from RadioShack for $1.50 and had extra repair tubes. It took me about an hour total that included running to RadioShack.
If there is a break in the fence, the collar doesn't work. We're not trying to find the fence. We're trying to find the break in the fence.
Thanks for the info. I've had to do this in the past. Another tip: i bought old hoses at a yard sale or cheap at a dollar store. Using a box cutter, slice the hose along the length of the tube. Insert wire in hose and wrap loosely with electrical tape, then bury hose. It's time consuming, but I have never had a break in my dog fence since I did this! - ElizabethB128
Why do you have to use an AM radio and fiddle around trying to find a suitable frequency? Why not just use the dog collar itself, which emits an audible noise when you get near the fence? - DanG101
Thank you, thank you, thank you! Had reserved the entire day to "Find The Break"... 5 minutes into "the entire day", I found the problem in Step 1! After doing the small loop, the transmitter reset itself. Problem solved}
I'll check that, first! Thanks!
I have a feeling you are gonna save me some money...Thanks!!!
I have a feeling you are going to save me some money...
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