[Amps] Triode Amps

[Kim Elmore]

I should have qualified my response: 1500 W is indeed possible out of a 
pair of 3-500Zs, but the cooling must be letter perfect: air sockets, 
proper chimneys and proper plenum pressure. I suppose you could get 2+ 
kW out of a pair of you ran them at a much higher B+ (well over the 4 kV 
max defined by Eimac), higher I_p and at the grid dissipation limit, 
i.e., and well out of their limits, but they won't last very long that 
before they fail. If cooling is sufficient, I suspect you could run 1.5 
kW output for RTTY and FT8 (essentially CCS), but there probably won't 
be much head room.

Kim N5OP

On 12/3/2021 12:54 PM, Ron W4BIN wrote:
> On 12/2/21 1:29 PM, Kim Elmore wrote:
>>
>> The 3-500Z is an excellent tube, but 1500 W isn't reasonably 
>> available out of a pair, even at increased plate voltage. 
>
>   I don't know about that, there are guys (free banders) on YouTube 
> that have no problems demonstrating a Heath
> SB220 with new Chinese tubes and the original power transformers that 
> are putting out 2,600. Watts dead key.
>   (BBI)
>
-- 
Kim Elmore, Ph

Kim Elmore, Ph.D. (Adj. Assoc. Prof., OU School of Meteorology, CCM, PP 
SEL/MEL/Glider, UAS, N5OP, 2nd Class Radiotelegraph, GROL)

/“I occasionally play works by contemporary composers and for two 
reasons. First to discourage the composer from writing any more and 
secondly to remind myself how much I appreciate Beethoven." – Jascha 
Heifetz/