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Old 18th Feb 2023, 3:42 pm   #108
Katar83
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Join Date: Feb 2021
Location: Thetford, Norfolk, UK.
Posts: 130
Default Re: What did I get myself into? Murphy A40C.

Yes, it appears so. Got next two questions on this set.

The R52, through which the anode of S.W. H.F. Amplifier, V12, AC/VP2 is fed was o/c when I got this, I've replaced it with a 2W 15k resistor, but its clear that this is running too hot and wont last so I'm thinking I'll put a much bigger ceramic one in there instead. I take it, this is down to missing field coils. The R54 also gets warm but nowhere near as bad as R52 so should be ok I think?

Also, how does the noise suppression works on this set? Is it just removing the inter station noise? Is it suppose to work on all bands? The switch on this does absolutely nothing it seems but there are some voltages present on the switch contacts and its probably next thing I'd like to investigate.
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