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originally posted by: Flyingclaydisk
a reply to: ChesterJohn
I agree with FD, it looks like an antenna which has been fashioned to use as a dousing rod. There's probably another one just like it somewhere.
Is the PL-259 connector actually terminated inside (look inside the ferrel and see if you can see cable)?
As for the antenna itself, these are commonly used for 800MHz trunked radio base station units. The length of the antenna is a fraction of the wavelength. It could be 900Mhz, but it's not much lower than 8-900 because it would be quite a bit longer. 400MHz antennas about 2 feet long and good 100MHz antennas are about 8 feet long.
Oh, and no, it cannot be used to spy on your wifi. It's just a simple RX/TX antenna for radio. Your wifi is a much higher frequency (and much lower powered).