It appears that the HF-Auto's method of interrupting amp keying involves a separate relay, inside the ATU, that only activates when RF is sensed and the tuner considers itself "tuned". This doesn't work for QSK, which depends on the amp being keyed *before* RF is generated.
I would assume that QSK is included in the design criteria for the KAT-500, but we all know what it is to assume, so it's a valid concern to raise, IMO... ~iain / N6ML On Thu, Dec 22, 2011 at 9:25 AM, Phil & Debbie Salas <dpsa...@tx.rr.com> wrote: > This sounds strange to me. Why would the tuner care whether it is in a QSK > environment? I run QSK with my K3, KPA500 and MFJ-998 with no problems. > Almost sounds like there is some hot-switching going on that makes the tuner > declare a SWR fault. The tuner should be outside the QSK loop anyway. > I.e., the Ameritron QSK5 switches the amp in and out at CW speed. It sounds > like maybe the tuner is right at the output of the PA where it connects into > the QSK5. If the tuner is at the output of the QSK5, I find it hard to > believe the tuner would see a problem. > > Phil - AD5X > > "I have been following a short message dialog over on the Palstar yahoo > group for the new Palstar HF-Auto automatic tuner. This started with a > problem reported that the Palstar tuner does not support QSK which was > uncovered when one person complained that the tuner did not work right > (would fault) when an external QSK box (Ameritron) was used with the amp." > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html