What power level were you using? And what type of external bridge? The K3's SWR bridge has two sensitivity ranges. If you have power set to 12 W or lower, the higher-sensitivity range is used. If you have power set above 12 W, the lower-sensitivity range is used. This is necessary to prevent heating of the transformers in the bridge.
SWR accuracy will be best when you're in the upper part of each range. So, for example, it'll be more accurate at 12 W than 1 W, and more accurate at 100 W than at 13 W. But accuracy should still be reasonable even in the lower end of the range. Your external bridge may have better sensitivity at the particular power range you were using. 73, Wayne N6KR On Nov 4, 2009, at 9:13 AM, DM4iM wrote: > I don't have the KAT3, i use an external homemade tuner and a cheap > swr-meter between it and the K3. Don't know how accurate the swr-meter > is, but i notice that the K3 shows 1.1:1 while the external meter > still > reads worse. Fiddling with the controls of the tuner settles the > needle > on the external meter, while the readout on the K3's display stays > unchanged. > I posted this to the list some weeks ago, but nobody noticed. > > -- > > 73, DM4iM > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
