This technique really does work.
I did the very same type of thing several years ago. Not with fm
or radio reading services, but I had an old Gonset communicator
which was a 2 meter AM rig.
The receiver was, as they used to say, "brod as a barn door". That
really was no exaggeration.
Anyway, what you could do was to stick the end of a piece of wire,
preferably in the shape of a small coil, under the chasis of the
communicator's receiver section and then connect the other end to
the antenna terminal on an hf communications receiver. You could
hear the noise level in the hf receiver increase as you tuned,
somewhere around 15 MHz or so, so you would peak it for most noise.
Then tune the Communicator's receiver and listen through the HF
receiver and you had yourself a pretty selective 2 meter converter.
So, it's definitely a tuning technique that really works.
Don W6SMB
*********** REPLY SEPARATOR ***********
On 12/9/2006 at 9:57 PM John J. Jacques wrote:
>Hi Anthony, I don't don't know how mutch more detail I can give,
all you
>need to do, is to make a patch cable, with a mini phone plug on
one end,
>for the output of the fm radio, and a pl259, coax connector on the
other
>for the antena input of the hf receiver. put the fm radio on the
>frequency you want to listen to the subcarrier from and the hf
radio in
>the narrow band fm mode, on the subcarrier frequency, either 67 or
92
>KHz. I know it sounds weird feeding an audio output into an
antenna
>input, but it does work! this is because, riding on that fm
broadcast
>signal at 92.5, or what ever frequency you are listening to, is a
signal
>at 67 or 92 KHz that your hf radio will receive!
>
>HTH:
>J. J.
>John Jacques
>Amateur Radio Station: KG7FA
>"Where Cat Is, Is Civilization!"
>Check Out My Web Page At: www.myspace.com/johnjacquesmusic
>
>
>
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