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 [email protected]
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