11-21-2021, 05:10 PM
As someone here said "all things being equal", your IF being aligned, the sole person who could shift things is Mr. Oscillator.
If you kept the resonant elements from the earlier sch, then my bet would be on the parasitics of the tube (the IE capacitance).
I would start from measuring the output frequency of the Oscilaltor at the start and the end of the scale; and then possibly (if you have the old 54C) comparing it to the current one.
If you kept the resonant elements from the earlier sch, then my bet would be on the parasitics of the tube (the IE capacitance).
I would start from measuring the output frequency of the Oscilaltor at the start and the end of the scale; and then possibly (if you have the old 54C) comparing it to the current one.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
