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KHZ wand type antenna

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baxterdmutt

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Hello all,
I have a wire tracer that transmits a signal on about 83khz. The antenna (a small wand) is missing. The company does not support the unit any longer and I have been unable to find a replacement anywhere. I have made some antennas on my own for my HAM equipment in the past but never for anything down that low and never for anything this small. My calculation suggests a full wave antenna would need around 1000 feet of wire. A 1/4 wave is still over 200 feet. I thought I could make some sort of active antenna but the antenna port has no way to provide power and so I am at a loss.

I don't want anything much larger than the original which was a little less than a foot long and about 3/4" in diameter. I guess I could do an active antenna with a AA or AAA battery but don't know if that's possible. Any help would be greatly appreciated.
Thanks in advance.
Roger
 
It is likely not an "antenna"; more likely an inductive pick-up loop similar to the ferrite loop-stick used in a 1960s AM transistor radio.
 
It is likely not an "antenna"; more likely an inductive pick-up loop similar to the ferrite loop-stick used in a 1960s AM transistor radio.
Thanks. I came to that same realization last night. I don't have a lot of electronic equipment so it's going to be a bit of guess work figuring out the tuning on a ferrite loopstick.
 
When working with ferrite cores if you know the inductance you need and the μ ferrite it simplify's the winding as the μ magifies the inductance. If the L= 200uH with an air core and you insert a ferrite rod into the coil that has a μ of 10 the inductance it increased by a factor of 10X. There is a company the sells ferrite rods. It is Amidon. If you do a search on the web you can find it.
 
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