[Elecraft] KPA1500 Linearity

[Paul Baldock]

What you report of compression near the maximum 
power is certainly true of the amplifiers like 
the SPE-1.5K that use a single device, but I 
would have thought this would not be true of the 
KPA1500 that uses 2 devices. This is the reason I 
returned my SPE and ordered the KPA. Hopefully 
the compression is less than 1dB.

Has anybody else measured it?

- Paul  - KW7Y



At 02:21 PM 6/9/2018, you wrote:
>I recently ran a two-tone test and measured CW 
>power gain. (SN1078)Â  It doesn't look 
>good.  The two-tone waveform shows distinct 
>"flat-topping", and the power gain drops 25 
>percent from 1000 to 1500 Watts.  My old 3-500Z 
>amplifier is much better.  Has anyone measured 
>IMD or linearity, or seen any test results? 
>While I'm primarily a CW operator, I'd be very 
>reluctant to use the amplifier on SSB. 73, Scott 
>K9MA -- Scott  K9MA k9ma at sdellington.us 
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