For the long runs, from the shack out to the base of the tower say, for HF I
would use either half inch Andrew hardline, or something like LMR600 or
LMR900.  For jumpers, like for the rotor loops at the top of the tower, I
would use LMR600UF*ultraflex).  Generally connectors for that kind of power
are called 7/16 DIN connectors.  No one uses UHF(PL259) connectors for more
than perhaps 3KW.  Some guys use type N connectors for power, but type N
connectors make me nervous at high power levels because the center pin is
very small, much smaller even the center pin on PL259's.  UHF(PL259)
connectors are very poor because they aren't sealed against the weather, and
they don't maintain a 50 ohm impedance across the connector.

HTH

73
.


Alan R. Downing
Phoenix, AZ


-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Phil Scovell
Sent: Saturday, August 24, 2013 1:24 PM
To: [log in to unmask]
Subject: Feedline for 12K

Alan, or anybody else who might know,
What's 12K need for feedline?  I suppose there are connecters that convert 
down to PL259?

Phil.
K0NX
----- Original Message ----- 
From: "Alan R. Downing" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, August 24, 2013 1:46 PM
Subject: Re: Out of the loop to long?


> Some countries have no output limit, and the maximum output of an amp
> doesn't make them illegal, even here in the States.  You can legally own 
> an
> amp that has 100KW output as long as you don't exceed 1500W when operating
> it.  Having said that, an awful lot of US hams run ten KW and up every day
> of the week.  There is an amp builder here in the States who builds amps
> using the 4CX15,000A tube which has an AB1 limit of 28KW.  The manual tune
> version costs $24000, and the auto-tune model costs $32000.  They are both
> legal to own, but you can't legally exceed 1500W output.  Unfortunately, 
> in
> order to run more than about 10KW, you must have 3 phase service with a 
> line
> voltage of 480V.  Many overseas countries use 3 phase 415V, and many of 
> the
> very high-power amps are built for that service.
>
>
>
>
> Alan R. Downing
> Phoenix, AZ
>
>
> -----Original Message-----
> From: For blind ham radio operators [mailto:[log in to unmask]]
> On Behalf Of Michael Ryan
> Sent: Saturday, August 24, 2013 12:24 PM
> To: [log in to unmask]
> Subject: Out of the loop to long?
>
> Hi all: =20
>
> 3 to 12kw? Isn't the legal limit for the amateur radio service 1500w
> continu=
> ous? Where did the 12kw get to be common place? Lol =20
> I'm these amps must be 20000. That's just ridiculous.=20
>
> Michael DE VO1AX=20
>
>
> Sent from my iPhone=
>