[HBQRP] Geiger counter circuit

[Jim Scott]

Ray, I've located my Raytheon Projects Manual.  Here is an early Geiger Counter using the proverbial CK-721 transistor.   Easily this could be adapted for a silicon part.

I've also included a link to some vintage books, should anyone be interested in browsing.



73,

Jim Scott
WB0IYC
Life Member ARRL
FISTS 15327
Joplin, MO EM27RC
http://www.scottelectronic.com/wb0iyc
------------------------------------------
We can see the beginning...
http://www.webbtelescope.org

> On April 5, 2019 at 3:41 PM Ray McNally <raymcn at gmail.com> wrote:
> 
>     Hi Jim,
> 
>       I was sending a msg that Electronic Goldmine had one for sale.  A couple of guys mentioned they would like to build one, so will discuss at next meeting.  Thanks.
> 
>     73,
>     Ray - N5SEZ
> 
>     On Fri, Apr 5, 2019, 10:27 AM Jim Scott < jim.scott at scottelectronic.com mailto:jim.scott at scottelectronic.com > wrote:
> 
>         > > We you looking for a gieger counter circuit?
> > 
> >         It took awhile to find it, but this vintage transistor one was published some time ago.
> > 
> >         See page 64.
> > 
> >         https://www.americanradiohistory.com/Archive-PF-Reporter/70s/Electronic-Servicing-1970-12.pdf
> > 
> > 
> >         73,
> > 
> >         Jim Scott
> >         WB0IYC
> >         Life Member ARRL
> >         FISTS 15327
> >         Joplin, MO EM27RC
> >         http://www.scottelectronic.com/wb0iyc
> > 
> >         The whole universe is waiting...
> >         http://www.jpl.nasa.gov/
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