Topband: TX relays

[Tom W8JI]

> I just popped the cover off a little Omron PCB-mounting relay that I 
> forgot
> I had, rated at 10 kV. The spacing between the SPDT contacts and the coil
> actually looks greater than that open-frame relay. I was thinking of
> seriesing the contacts on two of these relays, if necessary.
>

If you series the contacts the voltages across open contacts divides by the 
capacitances between the contacts and everything around the contacts.

It is like connecting a bunch of unequal value capacitors in series without 
using any equalizing components to force equal voltage division.

I know we can find claims in a few articles of how well that works. In the 
actual world we live in, it does not actually work very well at RF without 
compensation to equalize voltages.