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 Zenith tube mfg dates

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radiosetc



Posts : 6
Join date : 2010-10-12

PostSubject: Zenith tube mfg dates   Thu Oct 21, 2010 5:26 pm

I just acquired a Zenith Y600 with all Zenith tubes and was wondering if perhaps they were the originals. This Y600 has never been worked on from what I can tell and the cabinet is in like new condition.
The 1U4s have the following numbers on them: 3225627-1
The rest have these numbers on them: 36 13 29

I am sure the date of mfgr is there somewhere. Any help would be appreciated.
Thanks
Gary
RadiosEtc
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genoo



Posts : 4
Join date : 2010-10-13

PostSubject: Re: Zenith tube mfg dates   Thu Oct 21, 2010 5:54 pm

The 322 on the 1U4's is Tung-Sol, and the 56-27 is the 27th week of 1956.

Gene
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Tim Tress



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Join date : 2010-10-17

PostSubject: Re: Zenith tube mfg dates   Thu Oct 21, 2010 6:03 pm

The other number, read vertically, is 312 639. 312 is Sylvania, and 639 is the date code; 39th week of 1956. Those are likely to be original tubes.

Tim KA3JRT
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radiosetc



Posts : 6
Join date : 2010-10-12

PostSubject: Re: Zenith tube mfg dates   Thu Oct 21, 2010 8:04 pm

Thanks for the info Gene and Tim. There is a date stamped on the wood in the cabinet of APR 30 195?. Now I have think that date is APR 30 1957. Also will assume that is the mfg date.
I am going to see if it will fire up tomorrow. Still havn't decided whether to recap or leave as is, clean it up and never play it.
Gary
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