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39/44 tube
dirkbuddy
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Posts: 39
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Joined: Feb 2014
City: Medicine Hat, Alberta canada
#1

06-02-2014, 08:01 PM
I'm in the process of restoring a philco 71H, recapped it and changed out all resistors that were out of tolerance. after initial power up i notice considerable hum from frequency ranges 850 down to very bottom of dial, after testing the tubes i have 2 - 39/44 ... both test very good.....however 1 of these tubes glow at the top (made by raytheon) and the other (RCA) does not? i have a stark tester and checked for shorts on both tubes and there was not any. does anyone know if all 39/44 tubes should glow? just wondering if maybe my stark tester is not picking up a maybe dud tube here.....??
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Messages In This Thread
39/44 tube - by dirkbuddy - 06-02-2014, 08:01 PM
RE: 39/44 tube - by gregb - 06-02-2014, 08:04 PM
RE: 39/44 tube - by dirkbuddy - 06-02-2014, 08:20 PM
RE: 39/44 tube - by gregb - 06-02-2014, 09:10 PM



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