Always do a "mechanical alignment" before doing an electrical one.
That is: check for loose couplers between the dial drives and caps,
make sure the dial pointer physically stops at the correct points at the
rotational stops... That the tuning capacitor plates are fully unmeshed
or meshed at the rotational stops (or as shown by the manufacturer).

The Trimmer caps SHOULD allow you bring the high
end of the bands into calibration regardless of other issues... The low
end of the band alignment is usually set by the coil slug(s).

Pete


"Cincinnati" wrote in message
...
I am trying to calibrate a NC-300. All bands are 10-20 KHZ high. I have
trimmed the respective capacitors to minimum and am still high. Manual
says
respective coils are adjustable but they appear fixed.

Q1: is there a general reason or fix for why all bands are high out of
range?

Q2: Is there a way to adjust the coils?

If responding direct use:

hamguy (at) fuse.net

Thanks

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Ron Schuster N9RC
Cincinnati, OH
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