On Wed, 25 Aug 2010 11:19:15 -0700 (PDT), Dennis KB7ST wrote: >I have the AIM 4170 antenna analyzer ( w5big.com ). I could sweep the balun >in 1:1 and 4:1 mode is you'd like. I'm not sure it will give you the >choking impedance but will do some checking with the designer of the AIM.
I don't own an AIM, but I've seen choke measurements made by an AIM that had serious errors. A good common mode choke should have a high resistive impedance at the frequencies where it is used, and the AIM is best suited for measuring impedances relatively close to 50 ohms (that is, within 1:5 or 5:1). It's fundamentally unsuitable for measuring the high impedances of a good choke. 73, Jim Brown K9YC ______________________________________________________________ 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
