The hardware is in place. Some firmware is required that will be phased in when it's ready.
Wayne > On Nov 4, 2019, at 8:13 AM, Grant Youngman <[email protected]> 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 >> >> > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
