Wes and all, It is not unreasonable to expect some frequency dependency in the detection diodes as well. The tuner will function properly in any case - it tunes for the lowest SWR no matter what the exact value of that SWR may be.
Now, if the SWR = 1.0 point was not correct, that would say there may be a problem with the tuning. Those wanting a more accurate SWR indication of the antenna side may want to consider the new Elecraft W2 as well. 73, Don W3FPR Wes Stewart wrote: > I suggest a reading of Larry's original paper on the design of the LP-100 to > understand the heroic efforts needed to make these measurements with any > accuracy. > > see: http://www.telepostinc.com/Files/phipps-1.pdf > > It should come as no surprise that the K3's built-in directional coupler > lacks the directivity of the ones in Larry's LP-100, and directivity is > extremely important in this application. > > For an example left to the reader to work out, measure a load with 20 dB > return loss using a coupler with 20 dB directivity and see what the > uncertainty is. > > Wes Stewart N7WS > > > ______________________________________________________________ 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
