[Amps] Why do tubes cost so much?

[Bill, W6WRT]

ORIGINAL MESSAGE:

On Mon, 30 Aug 2010 17:33:33 -0000, "Bill VanAlstyne W5WVO"
<w5wvo at cybermesa.net> wrote:

> and they basically suck (most notably the 
>12-foot 5-element 6m yagi). Many people, including myself, have redesigned 
>them using computer modeling and vastly improved their performance. 

REPLY:

Really? I have one of those and I always thought it was pretty good. 

Since this is off topic for this reflector, could you email me
privately and give me some more info? Thanks in advance. 

73, Bill W6WRT