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" <n...@roadrunner.com>
To: "Elecraft List" <elecraft@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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