Re: FM Crystal Radio
- From: et472@xxxxxxxxxxxxxxxxxxx (Michael Black)
- Date: 24 Dec 2007 23:08:12 GMT
Rich Grise (rich@xxxxxxxxxxx) writes:
On Sat, 22 Dec 2007 07:52:13 -0800, Dave.H wrote:Of course, there was a wave when "crystal radios" were common
Maybe I should just stick with AM crystal radios.
Actually, you already have one with the slope detector -
the thing is, FM broadcast is 88-108 MHz, and AM broadcast
is 530-1650 Khz, so you'd have to change your tuned circuit
to change from AM to FM, just so there'll be signals to
receive.
But go ahead and build it anyway - that's a terrific way
to learn about this kind of stuff. :-)
for VHF. But they were specific to the aircraft band, 108 to 136MHz,
since of course that band uses AM. I remember one in Elementary Electronics
in 1971 or 72 where it built on flexible circuit board, so you could
wear it without anyone noticing. I thought that was novel, but I've
seen similar circuits in older magazines.
Michael
.
- References:
- FM Crystal Radio
- From: Dave.H
- Re: FM Crystal Radio
- From: Rich Grise
- FM Crystal Radio
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