Another possibility is a 2 stage grounded grid amplifier.
use a 4-125A gg to drive a pair of:
3-500Z
4-250
4-400
The driver and amplifier tubes could use the same HV power supply.
The 4-125A would have a high plate impedance that would easily be matched
by a pi-network that would also serve and the tank for the cathode of the
final.
73
Bill wa4lav
At 12:02 AM 7/17/02 -0500, Mike Krzystyniak wrote:
>I'm researching an amp project for a friend. He wants a legal limit or near
>legal limit amp that can be driven from a Yaesu FT-817. It's been 25 years
>since I rolled and amp so I thought I'd ask the gang here. Does anyone have
>a suggestion for a tube or pair of tubes that when driven with 5 watts will
>run up to a KW out?
>
>Thanks... Mike K9MK/5
>
>
>
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