[Elecraft] RF Chokes (renamed)

[Jack Smith]

This is probably drifting away from Elecraft specific topics, but a 
quick answer to your question is "maybe yes or maybe no."

The issue is what happens when one puts large RF voltages across these 
lossy ferrite-based chokes. In my application, it isn't an issue but it 
certainly can be as was mentioned earlier in, e.g., a plate choke 
environment or in your case where high voltage across parallel feed 
lines is possible.

I would be hesitant to use this design across a parallel transmission 
line without first measuring the impedance of the chokes over the 
transmitting frequency range and evaluating the expected voltage across 
the chokes and the consequent power dissipation in the cores.

There's also a possible concern with the chokes generating harmonics if 
driven into or close to magnetic saturation.

Sorry to not be able to give a direct answer but it's not a questions 
permitting a yes or no response.

Jack K8ZOA


Darrell Bellerive wrote:
> I've been looking for a pair of RFC's to bleed the static off of my parallel 
> feedline to ground. Have a couple of resistors, but would prefer a lower 
> resistance DC path to ground. The antenna is used for the 160 through 6 meter 
> ham bands and general coverage receiving so having something that would have 
> a high impedance from 10 kHz to 100 MHz would be great.
>
> Would this type of choke be suitable?
>
> Darrell  VA7TO  K2 #5093
>
> On Thursday 31 July 2008 09:14, Jack Smith wrote:
>   
>