02-14-2006, 08:17 PM
Yes, sorry. 
Was rushing during lunch-break at my desk at work....
"...sometimes the Bear bites you".
You still could have an open coil somewhere or the Sensitivity control (No.9) is not set right, according to the alignment procedure.
If turned down, it reduces the IF gain, if set to high, the IF can break into oscillation and cause signal blocking or squealing. The IF stage sensitivity control is actually a regeneration control to make the IF as high a gain as possible without breaking into oscillation.
Was rushing during lunch-break at my desk at work....
"...sometimes the Bear bites you".
You still could have an open coil somewhere or the Sensitivity control (No.9) is not set right, according to the alignment procedure.
If turned down, it reduces the IF gain, if set to high, the IF can break into oscillation and cause signal blocking or squealing. The IF stage sensitivity control is actually a regeneration control to make the IF as high a gain as possible without breaking into oscillation.
Chuck Schwark,
The Philco Repair Bench
[Image: http://www.philcorepairbench.com/images/philog3tiny.gif]
http://www.philcorepairbench.com
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