What method(s) did you use to verify the accuracy of your dB(c) numbers? I get
a little queasy when I see "-48.5 dBc."
On 10/18/2016 10:51 AM, Jim Brown wrote:
On Tue,10/18/2016 3:43 AM, Yngvi (TF3Y) wrote:
How fast does IMD deteriorate with increased power from the K3S or K3?
What are the IMD figures when running 20-25W driving a linear amp. such as
I've looked carefully at this, and so has my neighbor Bob Wolbert, K6XX, who
is an engineer at Elecraft and a serious contester. The first link shows my
measurements, the second is a pdf of the slides for a talk that K6XX gave to
NCCC three years ago. It includes measured data showing how TX power out and
DC voltage affect IMD. In my measurements, increased IMD causes CW bandwidth
to increase. You can see that difference by comparing measurements at 30W,
50W, and 100W.
73, Jim K9YC
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