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Old 01-06-2013, 03:22 PM
Pete Deksnis's Avatar
Pete Deksnis Pete Deksnis is offline
15GP22 demo @ ETF 2007
 
Join Date: Jan 2005
Location: Big Rapids, MI
Posts: 762
Quote:
Originally Posted by Phil Nelson View Post
Pete, not to stray too far off topic, but is that a video preamp as described in the 1956 RCA Broadcast News article? I made one of those about a year ago and wasn't crazy about the result (probably due to my lack of skill as a scratch builder).

http://www.antiqueradio.org/art/BROA...EWS_0656_1.jpg
http://www.antiqueradio.org/art/BROA...EWS_0656_2.jpg
http://www.antiqueradio.org/art/BROA...EWS_0656_3.jpg
http://www.antiqueradio.org/art/BROA...EWS_0656_4.jpg

Regards,

Phil Nelson
Phil,

[Slow response to posts cause: Thursday the Internet crapped out in the senior bldg where I live, so am once a day trudging thru the snow to my kids' house for an on-line stint. They incidentally are in FL for a week treating my grandsons to Disney World. Yes, wish I were there too.]

There's a PDF that formed the basis of my part of a 2011 EFT convention presentation on composite interface adapters. It documents some changes to the basic 1956 RCA circuit using the 12AT7. I'll get it too you somehow; I tried but this site won't let me upload it though it's only 2.66 meg.

Pete
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