[Amps] RG-393 source

[Dr. David Kirkby]

On 09/13/10 03:01 PM, Donald Fox wrote:
> Guys:
>
> Thanks for replies and info so far.
>
> Please recall that RG-393 is the RG-8 sized PTFE cable, and not the smaller RG-58 equivalent which is RG-142.
>
> While it looks like the smaller cable would handle 2KW at 144 mhz, I would prefer the bigger stuff if I can find it.
>
> Davis RF does have some, and will part with it for ~$5 a foot with a minimum order of 10 feet.
>
> Amplifier content: I will use some of this for the output section in my Henry 3002A.
>
>                                              Don

There's also some "air spaced" cables that have very high RF power handling. 
There not a lot of support of the inner conductor to the outer conductor. I 
forget what they call the stuff, but PTFE insulation is not the only way to get 
high power.

If you only need a couple of feet, I'd contact a manufacturer and ask for a 
sample. That's how I got the coax I am talking about. Can't think what its 
called though.

Dave