[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)
>
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