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ncodditems
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Post subject: WHY BRASS BASE on Radiotron etched CR TUBEs UV-200 201  Posted: May Sun 13, 2012 3:21 pm |
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Joined: Oct Sat 29, 2011 1:01 pm
Posts: 183
Location: statesville nc 28677
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WHY THE BRASS BASE on Radiotron TUBES ALSO HAVE Etched ON THE GLASS A CR INSIDE A CIRCLE AND ON THE OTHER SIDE GE . TUBES ARE UV-200 UV- 201 UV-202
WHAT DOES THE CR STAND FOR
WAS BRASS BASE BETTER OR FOR A REASON
WHY CR AND GE ETCHED ON A TUBE
THANKS
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Braithwaite
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Post subject: Re: WHY BRASS BASE on Radiotron etched CR TUBEs UV-200 20 Posted: May Sun 13, 2012 3:53 pm |
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Joined: Nov Sun 04, 2007 6:01 am
Posts: 1053
Location: Redding, CA
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"CR" is really RC, Radio Corporation (of America). GE made the tubes for RCA. Brass bases with ceramic inserts were the standard manufacturing practice before molded Bakelite bases.
Norman
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Jim Cross
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Post subject: Re: WHY BRASS BASE on Radiotron etched CR TUBEs UV-200 20 Posted: May Sun 13, 2012 8:35 pm |
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 655
Location: Orlando, FL, USA
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The "RC" logo is the pre-1923 logo used by what was to be called RCA. Originally, they were the RADIO CORPORATION of america. GE (in this case) and Westinghouse both put their logos on the tubes they made for RCA until about 1925.
Until the "Radio Group" was broken up in 1930, RCA made nothing. RCA was simply the distribution agent for GE, Westinghouse, and to a lesser extent, Wireless Specialties Apparatus. (WSA made only radios and parts).
Jim Cross
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Alan Douglas
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Post subject: Re: WHY BRASS BASE on Radiotron etched CR TUBEs UV-200 20 Posted: May Mon 14, 2012 2:37 am |
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 23538
Location: Pocasset, Cape Cod, MA
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Yes, at that time it was called just the "Radio Corporation." Everyone else was an outlaw (in their view).
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ncodditems
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Post subject: Re: WHY BRASS BASE on Radiotron etched CR TUBEs UV-200 20 Posted: May Mon 14, 2012 12:11 pm |
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Joined: Oct Sat 29, 2011 1:01 pm
Posts: 183
Location: statesville nc 28677
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great and thanks to all for the info
bob
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