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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc. |
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15th Aug 2018, 2:27 pm | #1 |
Pentode
Join Date: Mar 2005
Location: Cairneyhill, Fife, UK.
Posts: 135
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Pye FV1
I have this set. it has a 12 inch tube which is an MW 31-16 but the emissions are poor and it is unlikely that I will be able to boost the tube with a reactivator . I have a Cossor 926 with a defective lopt over wind but a better tube. I was thinking of swapping them round. the tube in the Cossor is a MW 31-74. I am wondering to what extent they are interchangeable as both are 12 inch round tubes form the same period ?
Alex McLaren |
15th Aug 2018, 2:49 pm | #2 |
Heptode
Join Date: Jul 2009
Location: Stoke-on-Trent, Staffordshire, UK.
Posts: 719
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Re: Pye FV1
They are fully interchangeable. The MW31-16 was replaced in Mullard’s range by the MW31-74.
Pete |
16th Aug 2018, 7:01 am | #3 | |
Dekatron
Join Date: Mar 2008
Location: Worthing, West Sussex, UK
Posts: 5,185
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Re: Pye FV1
Quote:
It is always worth trying a higher heater voltage if boosting fails to improve it. Mark |
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