On 5/25/2019 8:23 AM, Peter Bertini wrote:
Unfortunately, the K3 transmitter IMD specs are not good enough for
amplifier testing.
While that's true, IMD from a K3 is VERY sensitive to output power and
DC supply voltage. At 100W, it ain't grand, but it's a lot better in the
range of 25-50W typically used to drive an amp. IMD also decreases with
higher DC supply voltage. As I understand it, the radio is designed to
run from a 13.8V supply, and 15V is the max rated supply voltage.
There's measured data on this on my website, done by K6XX.
http://k9yc.com/K6XXAmpTalk.pdf
73, Jim K9YC
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