[AMRadio] Tube Theremin


sbjohnston at aol.com sbjohnston at aol.com
Fri Mar 20 22:26:31 EDT 2009


 
Thanks for the tip on the jewelry stand - sounds like it would be just the ticket. ? I don't think there is a Big Lots store around here anymore, but I see them in my travels pretty frequently.


 


Steve WD8DAS 
 
sbjohnston at aol.com 
http://www.wd8das.net/ 
--------------------------------------------------------- 
Radio is your best entertainment value. 
---------------------------------------------------------

 


 

-----Original Message-----
From: Jim Isbell, W5JAI <jim.isbell at gmail.com>
To: Discussion of AM Radio in the Amateur Service <amradio at mailman.qth.net>
Sent: Fri, 20 Mar 2009 9:17 pm
Subject: Re: [AMRadio] Tube Theremin










Thanks for those two pieces of data.  I am planning on building one
for my son-in-law for Christmas and have been looking for a good
schematic.

BTW, a nice case can be made from a $20 Armour jewelry case from
BigLots.  The have one that is about 4 feet tall with legs and side
opening doors as well as a top that opens.  I plan on removing the
drawers and replacing with a plain panel then placing speakers on
either side that can be directed by the opening or closing of the side
doors.  The top will open for a music stand with any controls under
the top.

On Fri, Mar 20, 2009 at 2:08 PM,  <sbjohnston at aol.com> wrote:
>
> ?I've got a new sort-of AM project on the bench here now:? a tube Theremin.? 
This musical instrument produces sound by heterodyning two
> oscillators that run in the low-end of the broadcast band. I'd like to find 
three Miller 70-OSC coils or
> equivalent for this rig - anyone have some??
>
>
>
> If you are interested in the circuit, I'm building upon the ideas of Doug 
Forbes that I found online.?
>
> See
>
> http://www.wd8das.net/theremin.gif
>
> and
>
> http://www.wd8das.net/theremin.txt
>
>
>
> Thanks...
>
>
>
>
>
>
>
>
>
>
>
> Steve WD8DAS
>
>
>
> sbjohnston at aol.com
>
> http://www.wd8das.net/
>
> ---------------------------------------------------------
>
> Radio is your best entertainment value.
>
> ---------------------------------------------------------
>
>
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-- 
Jim Isbell
"If you are not living on the edge, well then,
you are just taking up too much space."
______________________________________________________________
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