FALSE. CW is 100% modulation of a carrier by a rectangular wave, and
that modulation, like ANY amplitude modulation, produces sidebands,
which will excite distortion in a non-linear amplifier. I don't know
enough about Warren's Pure Signal system to know if it could be used on
CW. IM sidebands can be clearly seen in the display of a CW signal on a P3.
73, Jim K9YC
On Tue,8/2/2016 7:11 AM, brian wrote:
Of course if one sticks to CW this isn't necessary.
73 de Brian/K3KO
On 8/2/2016 12:45 PM, Joe Subich, W4TV wrote:
On 8/2/2016 1:32 AM, Ken K6MR wrote:
> While making these changes would help, they pale in comparison to a
> SDR implemented pre-distortion system like Pure Signal.
SDR based predistortion are most effective if the individual stages
are as clean as possible. That means 24/48V amplifiers for power
levels above 25 to 50 W and 60/100V devices for 500+W amplifiers.
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