"Peter Parker" wrote in message
...

"Gregg" wrote in message
news:x2TZc.87548$X12.3296@edtnps84...
Behold, Tony signalled from keyed 4-1000A filament:

do exist a simple method for modify a home radio tuner to get FM and
AM
frequencies out of the range?

Yes, but it's not simple.

Disagree.

Your tracking will be messed up

Agree. Sensitivity will suffer at one end of the dial.

and alignment with an oscilloscope needed.

Disagree. Just your ears will do.

Assuming we're talking the old style dial tuners, and not digitally tuned
receivers, it's possible to get them to recieve up to 1.8 or 1.9 MHz. You
can sometimes hear AM b/cast stations above 1.6 MHz and amateur radio 160m
activity (some of which is AM) above 1.8 MHz.

Details at http//www.alphalink.com.au/~parkerp/160.htm

At one time I fiddled with an FM clock radio and could hear ambulance or
police around 80 MHz. The bandwidth was dreadful, signals blotted each
other
out and you had to crank up the vol control due to the low deviations used
(relative to b/cast WB FM).


Ahh - the good old days!!! I remember putting 10pF ceramic caps across the
FM side of the tuning cap in an old AM/FM clock radio, then listening to the
local police on 83-84 MHz. Worked well if you turned up the volume and, as
you say, had some separation between the freq's you wanted to listen to.


Cheers

Martin, VK2UMJ