If this is only 160-40 you probably won't have a series resonance issue
with unused turns, but if you cover a wide range you will want to
progressively short the large coil taps. This is why band switches that
do not short (like the old National amp) and why large roller inductors
mess up on higher bands.
If you mean the NCL-2000 I suggest looking at the schematic again. Or did
National make another ham amp that Ive missed??
Here you go, Carl
http://www.arizona-am.net/PHOENIX/W7CPA/W7CPA%20NCL-2000%20BS%20Before.jpg
That's the wrong way to do a bandswitch. It does not pick up and hold the
lower band contacts when switched to higher bands. This allows the taps to
build up high voltages on lower band taps when working higher bands.
Switches should be pick up and hold, or progressively shorting.
73 Tom
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