Yea!?? I've been waiting for this announcement!?? Way to go Elecraft!
On 11/4/2019 11:13 AM, Grant Youngman wrote:
Well, that???s very good news. Unless I???ve missed it, this is first note
I've seen that confirms predistortion corrections in the K4.
Grant NQ5T
On Nov 4, 2019, at 10:58 AM, Wayne Burdick <[email protected]> wrote:
This is why the K4 (and a small number of other transceivers) include "active
predistortion" capability in hardware. It adapts the drive power to the response
curve of the PA stage. The K4 also has an TX sample input to include an external
amplifier in the correction loop. (The KPA1500 has a TX sample output for this purpose.)
We expect to post numbers significantly better than the industry's typical
3rd-order intermod performance at 100 W, which stands at about -30 dBc (ARRL
method).
73,
Wayne
N6KR
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