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Heatercathodeshort · 31st Jan 2015, 1:58 pm

HMV's first AC/DC receiver and built without Blumlein's input, hence the rubbish design. Yes 1950 and why did they use that rather reluctant to oscillate, B7G X78 frequency changer with the cathode INTERNALLY joined to the heater. Surely EMI were not put off from drilling a larger hole in the RF chassis. We will never know. John.

31st Jan 2015, 1:58 pm	#5
Heatercathodeshort Dekatron Join Date: Jun 2005 Location: Warnham, West Sussex. 10 miles south of DORKING. Posts: 9,147	Re: Marconiphone VRC74DA HMV's first AC/DC receiver and built without Blumlein's input, hence the rubbish design. Yes 1950 and why did they use that rather reluctant to oscillate, B7G X78 frequency changer with the cathode INTERNALLY joined to the heater. Surely EMI were not put off from drilling a larger hole in the RF chassis. We will never know. John.