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Old 19th May 2017, 11:01 pm   #57
dtvmcdonald
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Join Date: Mar 2016
Location: Champaign, Illinois, USA.
Posts: 227
Default Re: Marconi 702 advice

Quote:
Originally Posted by peter_scott View Post
...

EHT is certainly on the low side. What tapping are you using and what supply voltage are you using?


Peter
Its hard to see the tap setting as its soldered in under the chassis.
I think its 250, but that might be the wire to the EHT fuse.

I have my stepup transformer set so that at our usual voltage the
filaments are 4.00 and the B+ is 280. The brightness is limited by blooming,
which of course would be helped by more EHT. Running ac up
so filaments are 4.4 makes not enough difference to matter.
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