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Old 8th May 2011, 5:44 pm   #3
Peter.N.
Dekatron
 
Join Date: Jul 2008
Location: Charmouth, Dorset, UK.
Posts: 3,601
Default Re: Bush TV12 Poor Contrast

Early TRF TV's used a pot in the cathode of one of the RF valves to control the gain which was the only way the contrast could be set, so as Ron says if the gain is low the contrast will be low. Try adding a aerial pre amp if you can get hold of one, as a test.

Peter
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