[GreenKeys] Giant Concrete Arrows

[COURYHOUSE at aol.com]

Jeff!  yes and on top  is a  2 stage audio   amp   probably  with  201s
 
ye  you are correct as  they generally  thought the 200 to  be  better as a 
detector as it had a little  gas in it ,... Ed# _www.smecc.org_ 
(http://www.smecc.org) 
 
 
 
In a message dated 9/10/2013 6:29:07 P.M. Mountain Standard Time,  
jdangus at att.net writes:

It's an  RCA IP-501 using a single 200 series vacuum tube.

More information  about that in the May 2103 issue of QST in
the Vintage Radio  Column.

Jeff-1.0
wa6fwi

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