[TowerTalk] what size wire for kilowatt TX ??

[Steve Hunt]

Bud,

There's no mystery - the other 860 Watts gets dissipated in the 2.4 Ohms 
loading coil loss resistance and the 4 Ohms Ground loss assumed by HI-Q.

The maths all hangs together:

Efficiency = Rrad/(Rrad+Loss resistance) = 1.1/(1.1+2.4+4) = 1.1/7.5 = 14%

73,
Steve G3TXQ



W2RU - Bud Hippisley wrote:
>
> On Jan 4, 2009, at 12:49 PM, Steve Hunt wrote:
>
>> HI-Q quotes it as having
>> a radiation resistance of 1.1 Ohms and an efficiency of 14% on 80m -
>> both believable figures....[If] it's 14% efficient...it must radiate 
>> 140 Watts [when fed with a KW]....
>> Need I go on?
>
>
> Yes. I think you should talk about the other 860 watts a little bit.
>
> Bud, W2RU
>
>