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Well-kept secret?
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08-15-2011, 08:32 PM
Chad Hauris
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Join Date: May 2003
Location: West Texas
Posts: 2,085
I think the Hallicrafters S-40A communications receiver still used a 6F6 output and 80 rectifier up through the late 40's/early 50's...some of the later models may have replaced the 80 with a 5Y3 but I think they all used the 6F6.
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