[GreenKeys] 'Russian woodpecker' of old...

[Randy and Sherry Guttery]

  On 10/14/2010 10:32 PM, tony j. podrasky wrote:
> Hey guys;
>
> Thanx for the links - fascinating stuff!
>
> I read an article that said this thing was running 10MW of power.
>
> Now, I'm not much of an R-F person - but can someone tell me
> where the heck do you get a tube that can handle 10MW?
Think multiple tubes in parallel.
>   How do
> you make a power supply to handle that?
Think 20KV @ 1KA...
> What about feedline?
 From the photos - they were using ladder lines...  Hard to 
judge how far apart - but even at 20KV - a couple of feet 
would do - and again - in parallel...
> What keeps things from arcing all over the place?
>
I suspect that's the reason for the shape of the "driven" 
elements...  If you want to read some interesting things 
about antenna arcing (corona)  - and how it was solved - 
read about HCJB and the birth of the cubical quad. The 
cubical quad isn't the only "form factor" to deal with 
corona; but it was one of the earliest.  I suspect the cone 
shape of the feed ends of the elements (and the rounded ends 
at the opposite ends of the elements) serve the same purpose.

best regards...

-- 
randy guttery

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