I broke your tuner! <snip> W9CF wrote a fun little T-match simulator that gives you a front-panel view of a tuner. You plug in the impedance you want to match and press Autotune, and it'll find the match and give you the circuit loss. And you can spin the dials manually and enjoy watching the SWR bounce around <G> It's at: http://fermi.la.asu.edu/w9cf/tuner/tuner.html </snip>
I find the applet very interesting. I also find it extremely difficult to get a match (just like in real life). What this tells me is that "I don't know how to use a tuner!". I setup several impedance/frequency settings, and failed on all but 1 to get anywhere near the ideal match. The one I did find, the Autotune misses. Maybe Kevin needs to tweak his algorithm. I KNOW I need to tweak my on-air algoritym. Anyone got any rules-of-thumb for getting a match? The problem I stumbled on (the ONLY one where I beat the machine) was: R 100, X 75, F 14.050. I got: 210pf, 1.6mH, 250pf, 1.0:1, 0.9%, 0.0db. The machine gets: 162pf, 0.8mH, 77pf, 1.0:1, 2.2%, 0.1db. Further, maybe I didn't "beat" the machine. It does it with less inductance, but I get less loss. Isn't less loss better? Dan / WG4S / K2 #2456 _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
