> It is possible to construct an output switch using standard components
> that greatly exceeds the normal switch voltage ratings. By using a
> separate wafer for each band and having each wafer separated by a spacer,
> and by using a non-conducting shaft and ceramic or other non conducting
> spacers for the two bolts holding the assembly together, the breakdown
> voltage can be increased ten fold.
>
> I believe all of the components required are off the shelf and
> inexpensive.
The rotor to contact breakdown sets the limit. You can increase
the other parameters, but not that one.
That's the problem in the SB-220, AL-80 series style switches, as
well as the JV-9000 series.
It's also the limit in the RSC switches.
That's the switch killer, and it shows up on the 160 meter padding
capacitor on the tuning cap side and on the ten meter tap.
73, Tom W8JI
w8ji@contesting.com
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