[Amps] 3CX3000 input impedence

[Tony King - W4ZT]

Perhaps I should have paid better attention before my previous reply.
You asked for tuned input and I responded with output.... sorry, my mistake.

 From the Eimac data sheet they show the Driving Impedance as 47.5 Ohms
for 4KV Ep, 2A Ip, 6030W output; 50 Ohms at 4.8KV Ep, 1.68A Ip, 6000W
output.

Hope that helps.

73, Tony W4ZT


Barrie Smith wrote:
> A friend is building a 3CX3000 amp for 6M.
> 
> He wishes to ballpark the tuned input circuit by installing a resistor between the tube input and ground.
> 
> What would be the proper value for this resistor?
> 
> TIA, Barrie, W7ALW