Wes, I don't know about the -j501, but Kirchoff tells me that a series Xl = j1000 alone will cancel the +j1000 in the shack feedpoint (your example) leaving a 50 ohms pure resistive load, no need for the shunt element.
Since the absolute value of the Low Pass L-net impedance requires that Rl be less than Rs, I do not know how a Low Pass section would provide a match. The matching section must be a High Pass with your values. 73, Don W3FPR On 1/2/2011 10:22 PM, Wes Stewart wrote: > Sort of sounds logical.... but it's wrong. > > Let the load in the shack be 50 +j1000. > > A low-pass L-net with a shunt Xc = -j501 and series Xl = j1000 will do it. > > Wes N7WS > > --- On Sun, 1/2/11, Don Wilhelm<w3...@embarqmail.com> wrote: > >> As you mentioned, the matching range of the KAT3 becomes >> greater as the >> frequency is increased. >> That fact is often overlooked by many hams. It is all >> about the amount >> of L and C available in the tuner, but the inductive or >> capacitive >> reactance is really what counts in producing the >> match. If the >> feedpoint in the shack has 1000 ohms of inductive >> reactance, and the >> tuner has only 600 ohms capacitive reactance to attempt to >> cancel that >> inductance, then a match will never happen. > > > ______________________________________________________________ > 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
