Logic drive signals (up/down). You'd have a special TUNE mode that would bypass the internal ATU, if present, then adjust the antennas while watching for lowest SWR. All a small matter of programming in the KX3 itself. But the drive signals would need suitable buffering.
73, Wayne N6KR On May 27, 2011, at 12:46 PM, Phil Hystad wrote: > Wayne, > > Thanks for the quick response. Would the KX3 control interface be > command oriented or some voltage controlled signaling interface? > Also, in asking this question I am stretching my understanding of > how such an interface would work so if I am off base I welcome > correction. > > 73, phil, K7PEH > > > On May 27, 2011, at 9:22 AM, Wayne Burdick wrote: > >> We've already provided the needed hardware for this in the KX3, so >> an interface could be supported. It may take some time to add the >> needed control firmware. >> >> 73, >> Wayne >> N6KR >> >> On May 27, 2011, at 8:19 AM, Phil Hystad wrote: >> >>> The KX3 surely looks like a nice mobile rig that may replace my >>> IC-706.... >>> >>> But, I would need a good screwdriver antenna tuning interface. >>> Currently, I use the Turbo-Tuner by N2VZ which is fitted to the >>> IC-706 tune control. I have a Hi-Q 4/80 antenna mounted on my >>> pickup truck. >>> >>> So, several questions: >>> >>> 1. Would there be a tune control interface on the KX3? >>> 2. Would Elecraft consider building a screwdriver antenna >>> interface? >>> >>> Just to be clear on what I mean by screwdriver antenna interface >>> --- a device that uses the transmitter's tune control circuit to >>> switch on a low power signal and measure the SWR (usually via >>> reflected voltage) and switch on the screwdriver antenna drive >>> motor adjusting the center loading coil tap until a minimum SWR >>> (under 1.5:1) is reached where it turns off the drive motor and >>> turns off the transmitter's low power signal. >>> >>> I guess if Elecraft did not come out with a screwdriver antenna >>> interface that some talented electronics guru on this forum might >>> do so. >>> >>> 73, phil, K7PEH >>> >>> ______________________________________________________________ >>> 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
