Hi all, If the K2 has positive IIP3 specifications on 28 MHz which I think it has (though the measurements I have seen were all conducted on 14 MHz...), then it is hard to believe the measurements of DF9IC are reflecting the true situation. The XV144 uses a TUF-1H which is a 17 dBm mixer, the frontend is made up of devices with positive IIP3 specs, so -26,4 dBm is really impossible! I suppose something went wrong in these measurements and that can happen, we are humans after all. But I hope DF9IC will redo that test!
The only thing that I am convinced of, is that the phase-noise of the K2 can be improved and that it will bring significant improvement. I totally agree with Robert S53WW on that one. Of course, -124 dBc at 10 kHz is not bad but it must be possible to improve it to the level of the Ten Tec OMNI VI+ (-138 dBc/Hz at 10 kHZ).... Another point of improvement may be the bandfilters in the 28 MHz section. They are the same types that are used on the lower bands and their in-band and out-band selectivity on 28 is a point of concern. Best 73, Dick PA2DW K2 #3892 plus DEM 28-144 ECK transvertor to 2m (never measured yet hi!) _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
