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| Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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26th Feb 2023, 7:40 pm
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#1 |
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Heptode
Join Date: Sep 2004
Location: Preston, Lancashire, UK.
Posts: 632
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Valve identification
This valve is in a white box marked pena4 but it doesnt look like a pena4. Any ideas ?
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26th Feb 2023, 8:45 pm
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#2 |
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Heptode
Join Date: Sep 2004
Location: Preston, Lancashire, UK.
Posts: 632
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Re: Valve identification
More detailed pics
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26th Feb 2023, 8:55 pm
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#3 |
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Moderator
Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
Posts: 6,878
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Re: Valve identification
__________________
Invisible airwaves crackle with life or at least they used to  Mike T BVWS member. www.cossor.co.uk |
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26th Feb 2023, 9:15 pm
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#4 | |
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Heptode
Join Date: Sep 2004
Location: Preston, Lancashire, UK.
Posts: 632
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Re: Valve identification
Quote:
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27th Feb 2023, 12:18 am
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#5 |
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Octode
Join Date: Jul 2008
Location: Gloucestershire, UK.
Posts: 1,043
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Re: Valve identification
Hello,
I think it is actually a Cossor MP/Pen http://www.r-type.org/exhib/aad0248.htm. The MKT4 is equivalent to the MP/Pen but it is supposed to be a beam tetrode rather than a pentode. I think that the MKT4 on r-type is probably a re-labelled MP/Pen. Yours, Richard |
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