02-14-2013, 12:07 AM
Ron, your explaination of the goals and procedure for "rocking" to set padding trimmer capacitors is the best I've seen.
I'm going to sell the 38-116 when it is finished, but wanty the dial to be well-calibrated, or as well as is reasonably possible on any of them I restore, no matter if I plan to keep or sell them.
Did you notice that the schematic calls for the signal generator on maximum output, just the opposite of most radios where the goal is prevent AVC from interferring. The treble/expansion needs to be full clockwise, and the "magnetic tuning" off. The voltmeter is connected to one output tbe plate & cathode. Indeed, it would be impossible to use a digital meter for alignment. I've got a beautiful giant dial Hickok VTVM, but most often use my RCA Senior Voltohmyst.
I'm going to sell the 38-116 when it is finished, but wanty the dial to be well-calibrated, or as well as is reasonably possible on any of them I restore, no matter if I plan to keep or sell them.
Did you notice that the schematic calls for the signal generator on maximum output, just the opposite of most radios where the goal is prevent AVC from interferring. The treble/expansion needs to be full clockwise, and the "magnetic tuning" off. The voltmeter is connected to one output tbe plate & cathode. Indeed, it would be impossible to use a digital meter for alignment. I've got a beautiful giant dial Hickok VTVM, but most often use my RCA Senior Voltohmyst.
Web site: http://www.masekconsulting.net
Radio Photos: http://www.photobucket.com - album id FStephenMasek
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