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wrote:
Now then he is wrong this time ;-)
The input is a ANALOG input. Therefore you can feed what ever you want.
Attache a bigger coil to get higher sensitivity in magnetic fields or
simply just add a AUDIO signal from your radio and the Spectran will
show it up to 1 MHz, its just as easy as that.

I looked again and still don't see anything that suggests that it
either has an analog input or is intended for use with audio signals.
Where are you getting this information? Or do you have one and you're
actually using it in this manner. I don't even see a place to connect a
coil (I assumed it was internal) but then they really don't show very
much on the web site. If you have a link to an instruction manual or a
good picture that shows the connectors, please pass it along.

I could very well be wrong but I don't see any evidence that it can be
used in the way you suggest, other than perhaps with some modification.
That's cheating!