[Elecraft] KPA-1500 on digital modes

[Larry (K8UT)]

If my efficiency screenshots from earlier did not get through the 
reflector, you can see the results in a JPG file here:

https://hamprojects.info/hamprojects-download-page/#elf_l1_b3RoZXJz


-larry (K8UT)

------ Original Message ------
From: "Roger D Johnson" <n1rj at roadrunner.com>
To: "Elecraft List" <elecraft at mailman.qth.net>
Sent: 2019-08-29 17:44:05
Subject: Re: [Elecraft] KPA-1500 on digital modes

>I just did a quick check:
>
>At 1500 watts eff is 56% and pwr diss is 1179 watts
>    1000              44                  1273
>     500              30                  1120
>
>My Expert 1.3K-FA had 3 voltage levels:
>
>48 volts for full power (1300 watts)
>38           800 watts
>32           450
>
>I no longer have the amp so I can't check the eff at those
>voltages and power levels.
>
>73, Roger
>
>
>On 8/29/2019 9:03 AM, Roger D Johnson wrote:
>>It's interesting that the heat that has to be dissipated is pretty close
>>to 1000 watts in all these scenarios! Running the amp at less than full
>>power buys you nothing.
>>
>>73, Roger
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