[Amps] 200-ohm tank and "un-un" in HF amp design?

[Bill Turner]

ORIGINAL MESSAGE:          (may be snipped)

On Sun, 20 Oct 2013 18:39:37 -0400 (EDT), Louis wrote:

>THE COMMAND TECH HF-2500E THAT RUNS 3 3CX800 TUBES USES THIS UN-UN SYSTEM AND AT 3KW OUTPUT THERE SEEMS TO BE NO ISSUES WHATSOEVER.   Seems to be a tried and true design.  It's hard to argue with success like that.
>

REPLY:

Will that unit run at full legal limit with a brick on the key? The 2-holer
version will not, and the weak link is the toroid. 

Guess how I know?   Twice.   :-)

73, Bill W6WRT