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Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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29th Dec 2017, 1:24 pm | #1 |
Heptode
Join Date: Mar 2004
Location: Kendal, Cumbria, UK.
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Sobell 515P mystery valves
This model seems to have had various valve combinations. Mine is missing V2 and V3 and the empty bases are B9A as are all the rest. Must have been a one off. Any guesses for those two in B9A please?
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29th Dec 2017, 1:45 pm | #2 |
Moderator
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Re: Sobell 515P mystery valves
If V1 is an ECH81 then V2 may be a EBF80 and V3 an EBC81
I take it that V4 is an EL84 and V5 an EZ80? Just a Guess Cheers Mike T
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29th Dec 2017, 2:32 pm | #3 |
Heptode
Join Date: Mar 2004
Location: Kendal, Cumbria, UK.
Posts: 625
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Re: Sobell 515P mystery valves
yes and that sounds like a good guess to me. Cheers.
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Knobs and tubes rule ok |
29th Dec 2017, 2:53 pm | #4 |
Dekatron
Join Date: Jan 2003
Location: Bradford on Avon, Wiltshire, UK.
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Re: Sobell 515P mystery valves
You might be able to tell from the pin out, and then reverse look up in valve data. You know the base and heater voltage, which narrows it down a lot.
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29th Dec 2017, 3:08 pm | #5 |
Heptode
Join Date: Mar 2016
Location: Essex, UK.
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Re: Sobell 515P mystery valves
Valve line up for Sobell 515P is V1 ECH81, V2 EAF42, V3 EBC41, V4 EL84, V5 EZ80. V2 And V3 have rimlock B8A bases unless later versions have B9A bases.
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Geoff Last edited by GeoffK; 29th Dec 2017 at 3:13 pm. |