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#1
09-10-2010, 08:11 PM
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Sylvania ??? CRT
Anyone recognize this CRT ? Looks like 7-8" aluminized. Perhaps it's a radar CRT
 Nice burn hole  http://cgi.ebay.com/ANTIQUE-TELEVISI...-/350393024972 They have some nice sets and test equipment for sale too. (no affiliation) 
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#2
09-10-2010, 08:39 PM
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Hm, not sure about the CRT. But I was looking through those other listings and there was indeed some interesting stuff...
http://cgi.ebay.com/VINTAGE-PORTABLE...b#ht_576wt_930 Got any idea who made these? It looks like a Mitsubishi emblem. It's odd, because I once noticed what looked like a tube radio in the background of a show on Nickelodeon called iCarly and that radio also had a symbol like this on it.
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#3
09-10-2010, 08:50 PM
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It looks like one of the pins is broken off too.
The base is the same nine pin mini that's used on the Philco 12WP4, I wonder if it's the same gun?
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#4
09-10-2010, 08:51 PM
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Quote:
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#5
09-10-2010, 09:01 PM
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Mine (a model TV 6U with UHF tuner underneath) is badged "Singer"... and says on the back "Made in Japan for the Singer Company". It does not indicate the actual manufacturer. It does not have the Mitsubishi emblem on the handle. Cute little set!
jr Last edited by jr_tech; 09-10-2010 at 09:49 PM. Reason: add pix
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#6
09-10-2010, 09:47 PM
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The center burn makes it appear to be a radar CRT since tubes seeing service in PPI scopes often had burns at the origin of the scan. At least three possibilities exist for
7" round, 70-degree, 9-pin, aluminized tubes. First the 7AQP-. While I don't have a Sylvania data sheet for it, it was MIL-spec'd and Sylvania was known for second-sourcing I&M CRTs. The second one is the very similar 7AUP- made by Sylvania. Third, Sylvania made many custom CRTs, some of which were minor variations of existing EIA registered devices. I feel the 7AUP- is the most likely of the options. Peter Keller
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