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Old 12th Dec 2018, 7:09 am   #30
Catkins
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Join Date: Feb 2015
Location: Chepstow, Monmouthshire, UK.
Posts: 234
Default Re: 1938 Murphy A56V television restoration

Quote:
Originally Posted by peter_scott View Post
I'm not sure about the extent of Baird circuitry remaining in sets with top blanking. I certainly think it's worth being able to display 240 lines 25 Hz. Finding a standards switch that can fit in the limited space of the original is the only difficult part.

My set never had the Baird circuitry and I had intended to fit the Baird valve on a small piggyback chassis but as it happens the graphics card signal generation gives me line pulses during the frame sync so I only needed to incorporate the switchable timing components and I mounted my standards switch on the bracket of the push about centring pot rather than risk damaging my plastic switch cover..
Yes, I have seen your article about getting Baird 240 line TV working on your set. Very interesting.

I wondered how you got line sync without the Baird valve, all is now explained.

Thank-you

Phillip

Last edited by Catkins; 12th Dec 2018 at 7:10 am. Reason: Got the quoting wrong
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