Don, So you want to add +j1000 to +j1000 to get zero?
Wes --- On Sun, 1/2/11, Don Wilhelm <[email protected]> wrote: > 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<[email protected]> > 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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
