[Elecraft] KAT500 update

[Cortland Richmond]

You are assuming that the choking impedance is what the transmission 
line used for a winding sees; THAT is always whatever impedance the SWR 
presents.  The 2500 Ohm choking impedance is only seen by current on the 
outside of the cable, a good deal less power (thus voltage) than what is 
inside.   It need only be insulated enough to prevent arcing from output 
to adjacent turns.

Cheers!

Cortland
KA5S

On 12/8/201116:43 n09e wrote:
> Imagine choke constructed with RG174 looped through a toroid 10 times.  Also
> imagine output resitstance 2500 Ohms and 100W power.
>
> On input, RG174 has a peak voltage of 100V. No problem.
>
> On output, RG174 has a peak voltage of 1000V. It would melt in seconds.
>
> What is wrong here? Assumptions?
>
> Ignacy