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 Post subject: Graybar 330 schematic
PostPosted: Dec Sat 02, 2017 12:17 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 7053
Location: Portland Oregon
I finally found reference to the Graybar 330 on Radio Museum but they are lacking the schematic so I'm stuck.
Ed


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 Post subject: Re: Graybar 330 schematic
PostPosted: Dec Sat 02, 2017 12:35 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 10963
Location: Mpls, Minnesota
Same as the Radolia 60, schematic is here
http://www.nostalgiaair.org/pagesbymode ... 040337.pdf

The Graybar 330 is electrically identical to the Radiola 60 which was RCA's first all electric (or light socket operated as they said in those days) super-heterodyne radio. When you look inside, you will see a strong resemblance to the Radiola 17 & 18 & 33. That's because the '330 and all three of those RCA models were made by General-Electric on the same chassis frame. All RCA products were built by other companies in the 1920's.

For more on RCA in the 1920's, I refer you to the new, fully illustrated book; Radiola The Golden age of RCA by Eric Wenaas (a must have book for any serious radio collector).

https://www.radiolaguy.com/Showcase/Con ... tm#Graybar


Dave


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 Post subject: Re: Graybar 330 schematic
PostPosted: Dec Sat 02, 2017 1:37 am 
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Joined: Jan Tue 31, 2012 1:55 am
Posts: 2912
Location: Mountains of Mourne. Ireland.
Ed, 32-pages of service data can be found in...
RCA-Victor-Service-Notes-1929-1930.pdf 31.7MB pdf-page 214
Direct download→ http://www.americanradiohistory.com/Arc ... 9-1930.pdf

Four pages of service data can be found in...
RCA-Service-Data-1923-1932-A.pdf 37.6MB pdf-page 194
Direct download→ http://www.americanradiohistory.com/Arc ... 1932-A.pdf

Both from here: http://www.americanradiohistory.com/RCA ... ervice.htm

Greg.


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 Post subject: Re: Graybar 330 schematic
PostPosted: Dec Tue 05, 2017 8:18 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 7053
Location: Portland Oregon
That is just what I was looking for, thanks guys.
Ed


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