http://elecraft.85.s1.nabble.com/KPA-1500-Efficiency-As-A-Function-of-Input-Power-tp7644440p7644469.html
Actually a class C amplifier can be made to perform as a linear. The technology is over 60 years old but I don’t think it has ever been tried in amateur service.
> On Aug 17, 2018, at 3:06 PM, Bill Frantz <
[hidden email]> wrote:
>
> And I would guess it was running in class C, which is not linear, so only useful for certain modes (including FM). Class C can convert most of the input power to RF power.
>
> 73 Bill AE6JV
>
>> On 8/17/18 at 11:48 AM,
[hidden email] (Fred Jensen) wrote:
>>
>> One 10 KW FM transmitter I helped build used four 4-1000A's in parallel and the filament power was 600 watts. Efficiency, including filament power was just over 70%.
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> Bill Frantz | Ham radio contesting is a | Periwinkle
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