[Elecraft] KPA1500 on AM

[Eric Swartz - WA6HHQ, Elecraft]

Agreed. AM with carrier set properly to 25% of peak power (1500 * 0.25 = 375 W 
max carrier ) is no strain for the 1500.  With the normal variations of the AM 
speech envelope between the 235 W carrier and the peaks at 1500W, the amp is 
loafing along at any key down time.  :-)

Eric
/elecraft.com/

On 2/15/2018 3:27 AM, Richard Lamont wrote:
> On 15/02/18 11:12, Bill wrote:
>
>> How well will the KPA1500 do on AM during very long-winded QSOs? I
>> currently use my KPA500 on AM and it does fine - albeit a little noisy
>> in the fan department. For information only: The K3 garners excellent
>> audio reports on AM.
> To prevent flat-topping at 100% mod, for AM the carrier power should be
> no more than 25% of the peak envelope power. So I would imagine both
> amplifiers would do AM without the slightest difficulty. (I don't work
> AM myself so haven't tried it.)
>
>
> 73,
> Richard G4DYA
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