Note the TX SAMPLE input on the rear panel, clearly shown in the product brochure :)
Wayne N6KR > On Nov 4, 2019, at 8:29 AM, Dan Atchison via Elecraft > <[email protected]> wrote: > > 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 >>> >>> >> ______________________________________________________________ >> 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] > > ______________________________________________________________ > 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] ______________________________________________________________ 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]
