🚀 go-pugleaf

>In article <BzDEtE.K5K@bcstec.ca.boeing.com>, mce5921@bcstec.ca.boeing.com
>(Martin Emde) says:
>>
>>Does anyone know how to modify a Walkman FM Receiver such that it operates
>>over the 108-136Mhz frequency range (aircraft voice communication) or
>>know if this is even possible?

Yeap.  It is possible.  I remember doing that in high school after
reading something in the book store.  I live closed to the airport
back then.  (So it was something simple enough.)

In article <92353.094726SOBCZAK@MAINE.MAINE.EDU>, Robert A. Sobczak
<SOBCZAK@MAINE.MAINE.EDU> says:
>
>Yea, I do.
>
>First, go buy an AM radio that receives in that range, because that what
>aircraft radios transmit on.  You can tune to the freq, but you have to

>Rob

That's one way of doing it.  Get an old FM radio (pre-chips days).  I am
not much into radio stuff, but I remember there is a trick in the
radio that uses a pair of diodes and one of the IF cans (the black one)
to change the FM signal back to an analog signal.  You basically detune
that IF coil to get ride of the FM demodulation. (Might want to find out
how it works by picking up a book at the libraray.) As for the frequency
part, you'll have to stretch the coils for both the local oscillator and
the tuning coil to shift their frequency ranges up.  You do a bit at a
time so that you can still pick up the upper stations on the lower part
of the dial.  It gets tough hacking those tiny little walkmans. :(

K. C. Lee
Elec. Eng. Grad. Student