Hi David, it will absolutely be helpful. Heck, the grid dipper test is
helpful. We have been arguing over er, discussing, such a small difference in
frequency that it is basically a trivial difference.
The only gottcha is that the tube and other nuisance reactance (strays) will
be added to your plate tuning C value. The net effect is when everything is
finally connected, the plate tune C will end up at a lower setting. No matter
though, this why there is a knob on it; we just can't always predict the
exact total of the extra C contributors. As the frequency is lowered, this
naturally becomes less of an issue and when raised, more of an issue.
73,
Gerald K5GW
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