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RCA 8D21 VHF TV Transmitting tube--Silver Plated Geek Porn!
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09-01-2016, 09:19 PM
N2IXK
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Join Date: Apr 2011
Location: Sittin' on the "Group W" bench...
Posts: 801
I have mine displayed next to my 6448, which is another bizarre-looking RCA tube developed for high power UHF TV.
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