> 1, add a smaller C1 to the existing and switch in/switch out
>
You probably do not need to switch in/out the smaller variable
capacitor, because it will be an insignificant amount of additional
parallel capacitance on the lower frequency bands. You only need to
switch the larger variable capacitor out on the higher frequency bands.
Another way of putting it:
C1A = small variable
C1B = large variable
Band ....C1 total=
160...C1A+C1B
80...C1A+C1B
40...C1A+C1B
30...C1A+C1B
20...C1A+C1B
17...C1A+C1B
15...uncertain, maybe just C1A
12...C1A
10...C1A
No need to switch C1A out for any band.
DE N6KB
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