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Later, there were hi-res (supposedly) versions of the 21FJP22... I have one in my Zenith, which if I recall, is a HR21GVP22. I've heard of a military number for 21" roundie tubes, which might be this 1819P22... I wonder if SgtRob might be able to ring in on this?
Charles
Very interesting - I never heard of hi-res roundies. Can you put a magnifier on it and another tube and measure the difference?
03-20-2008, 01:09 PM
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