On 9/5/07, D. Chester <[EMAIL PROTECTED]> wrote: > > > This brings up a thought I've had about link coupled tuners, of which I > > use. > > > > Of course I feed the 50 ohm coax to the link. The center to one side > > of the link and the shield (ground) to the other. What effect does > > the "link position" have on a tuner? I suspect the link position > > (mine is rotatable) would affect the matching impedance to the coax? > > > > 73 > > Brian / wa5am > If you have a variable link on the antenna tuner coil, there will be one > and only one critical degree of coupling that will give a perfect matching > impedance to the coax (assuming that impedance match is within the range of > the tuner). Increasing the coupling will make the coax see too low an > impedance, and decreasing the coupling will make the load impedance too > high. >
Thanks Don, that's what I thought, and have indeed observed. 73, Brian ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
