Hello Darrell, The inductance of the toroids typically used in the K2 can be increased by compressing the turns. This can be done to fine-tune a circuit but for consistent results, it's probably best to do it the way the Elecraft guys recommend and spread out the turns a bit.
I've evaluated a toroid, L5, in the KAT2 with both close spacing and loose spacing. The data can be seen here: http://w5big.home.comcast.net/L5Analysis.htm 73/ Bob - W5BIG ==================================== ----- Original Message ----- From: "Darrell Bellerive" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Sunday, August 28, 2005 6:31 PM Subject: [Elecraft] Measuring Inductance with the MFJ-259 > As I build my second K2, I want to try to measure the inductance of the > toroids with my MFJ-259. The MFJ manual has instructions on how to do this. > Essentially one builds a series LC circuit and measures the resonant > frequency and then calculates the inductance. > > Has anyone tried this and have any tips or tricks to pass on? > > Am I correct in assuming I can adjust the value of inductance on a toroid > slightly by compressing or expanding the spacing between turns? If so what > can I use to hold the turns in place. Friction is probably good enough, but I > wonder about a few drops of something like Q-Dope. Comments? > _______________________________________________ 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
