04-01-2016, 12:57 PM
Unfortunately the shadow meter is open circuit, but a guy on the Antique Radio Forums is gonna rewind it for me. I substituted a 1K resistor for now.
Concerning the oscillator adjustment I find one peak which gives more AVC voltage which indicates a stronger signal and the other peak gives less AVC voltage which indicates a weaker signal.
The setting with the stronger signal causes a notable reduction in signal as I tune near the middle of the SW band, whereas the setting with the weaker signal doesn't cause any drop in signal over the whole SW band. Also based on my digital frequency display either setting seems to be low side injection as the display when set for -260KHz IF offset displays the correct frequency.
All changing the cap value seems to do is alter the LO frequency some which requires re-adjusting the SW oscillator trimmer and antenna trimmer at 10.8 MHz
Concerning the oscillator adjustment I find one peak which gives more AVC voltage which indicates a stronger signal and the other peak gives less AVC voltage which indicates a weaker signal.
The setting with the stronger signal causes a notable reduction in signal as I tune near the middle of the SW band, whereas the setting with the weaker signal doesn't cause any drop in signal over the whole SW band. Also based on my digital frequency display either setting seems to be low side injection as the display when set for -260KHz IF offset displays the correct frequency.
All changing the cap value seems to do is alter the LO frequency some which requires re-adjusting the SW oscillator trimmer and antenna trimmer at 10.8 MHz
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