Just to demonstrate that the K3 TX spectrum is excellent, I have uploaded some plots to flickr
starting at http://www:.flickr.com/photos/ad6xy/3980006295/ with the ones between up to http://www.flickr.com/photos/ad6xy/3980007573/ showing the close in spectrum at 100W output on 14.2 MHz for a CW tone - it has no obvious spurii except those close to the carrier above -90dBc. The close in plot shows the usual 50Hz mains spurs plus some at 400Hz but even these are 60 dB down. I am not sure if the K3 is better than the analyser. I did some 2-tone tests to see if it could be that, they are in the following 4 pictures but again, there is nothing wrong and indeed the results are rather good for a 12V PA. It is interesting the K3 is cleaner close in at 50W than at 10W. That is because of the bypassing of the PA below 12W. I thought this had been corrected to 10W when the big PA was limited to 100W but not so. Mike -- View this message in context: http://n2.nabble.com/K3-bad-TX-tp3763903p3764595.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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
