Re: Topband: TX relays

["Tom W8JI" <w8ji@w8ji.com>]

> 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. 

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