Philco Predicta predicament

[marty59]

Not sure on your "seventeener" but on the 9L37 21" chassis the AGC is rather crude being controlled by a local-distant switch and variable by the contrast pot as being in part of the feedback loop. Minimize these controls and see what effect you get.

[IsthmusTV]

Also, I believe that at least some versions of the Predicta chassis have a "buzz" control that can be adjusted to minimize inter carrier audio buzz.

[Phil Nelson]

Originally Posted by IsthmusTV

some versions of the Predicta chassis have a "buzz" control that can be adjusted to minimize inter carrier audio buzz.

My barberpole set (ch. 9L37) has a buzz control on the cathode of the audio detector. I recently got a 17" tabletop like this (ch. 10L4x) and it appears to have no buzz control.

Phil Nelson