I was using 4 Watts, the external bridge is a taiwan-made "AV-20", I forgot the brand name. There is a sticker, it says "accuracy 10%".
Today I tested again using 10 Watts, the K3's and the external meters readout match a lot closer. With 10 W i can bring the K3s readout to 1.0:1 , with 4 W it was never better than 1.1:1. At 100 Watts , both meters agree in the range from 1.0:1 up to about 3:1. That is good enough for me. I don't care much about a perfect swr, but the components in the tuner *do* care when the K3 drives the Alpha. It should not be too bad then. :-) Martin -- Wayne Burdick schrieb: > 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 -- 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
