Larry, The signal in that long cable that is likely to prove troublesome is the AUXBUS. It is a one wire communications signal path for all the microprocessors in the K2 system. If the main MCU sends out a query, it expects a response in a given number of microseconds, and if that response is not received in time, the option will be declared off-line, absent, or otherwise broken. The capacitance of a long cable can also be troublesome due to shaping the edges of the relatively fast digital bits.
I have no idea how long the cable could be, but Elecraft has recommended in the past no greater than 6 feet (less than 2 meters). I would suggest you cut a cable of your desired length and try it - if all functions work, then you are welcome to leave it that long, but if it does not work, you are only out the extra cable. On 2/1/2011 1:11 PM, Larry Dodson wrote: > Advice/experience will be appreciated. > > I have an upstairs shack (ugh) with much RF. Tried to earth without much > luck. Should use a balanced antenna, but. > > I have a windom antenna cut to 20%x80%, overall length 136 feet; used for > 80-thru-10 meters. It is fed with vertical twin lead for approximately 20 > feet to a 4:1 balum and from there with coaxial to my rig. Whole antenna is > 30 feet above the ground. > > Now my question. I am using a K2, and have built a KPA100 and KAT100 in > separate enclosure. I would like to move the KPA100 and KAT100 in separate > enclosure to the twin lead from antenna and use as an external auto ATU, > then coaxial to shack, the distance being approximately 30 feet from the > twin lead. I can locate external auto ATU inside of garage. > > What would be the problems? RF connection from K2 for 30 feet; control cable > from K2 for 30 feet (maximum distance ?); 12v power? > > Thanks in advance - > Larry (G0IKE) k2 - 2424 > ______________________________________________________________ > 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 > ______________________________________________________________ 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
