[Amps] 3-500Z socket types
W2RU - Bud Hippisley
W2RU at frontiernet.net
Wed Dec 29 14:34:43 EST 2004
I have a very early Amp Supply Co. LK-550 which uses three 3-500Zs. I have had recurring problems with getting all three bottles to "light up" when I power up. The problem appears to be excessive resistance at the junction of the filament pins and tube sockets. The ceramic sockets in this rig have a removable spring clip at each of the five tube pins, and I have re-bent some of these for temporary relief. But getting underneath the aluminum platform the tube sockets are mounted on is a real hassle, and I risk damaging the plate choke each time I do it.
Is there a different type of socket for the 3-500Z that I could install? Otherwise, my next step may be to solder the tube filament pins directly to the filament choke leads....:-)
Tnx & 73 -- Bud, W2RU
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