Re: How to make my transmitter and receiver circuit?

On Wed, 13 Dec 2006 19:50:05 GMT, Rich Grise <rich@xxxxxxxxxxx> wrote:

On Wed, 13 Dec 2006 11:39:32 -0500, default wrote:
On 13 Dec 2006 04:38:41 -0800, "venkatsr" <srvenkatraman@xxxxxxxxx>
wrote:

HI everyone!! any one hav idea how to make a simple transmitter and
receiver for audio signals in my home ..to communicate with in my
home..using bredboard.. Plz say me if u hav any good ideas or u have
done anything lyk dat..thank u..

Sure search for it under "phono oscillator" easy cheap works with AM
or FM depending on what you build.

I also came across a dirt simple magnetic field transmitter for music
during a search for something else (googledrift) can't find it now. A
little more "upscale" than what Ken Smith is advocating. Instead of
the carbon mike an audio amp drives a coil the size of the house.

Google "induction headphones".

Cheers!
Rich

Not much joy with "induction headphones" but "induction loop" works.

http://www.headwize.com/faqs.htm Has a representative receiver
schematic

Lot of hits associated with hearing aids, classrooms and language
translators, not much hard data like schematics.

Thing I came across earlier looked like it had a 60 HZ notch filter,
so I wonder about hum pickup.

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