I've tested my K3 MDS today using XG2 and the procedures reported on its manual.
I've got an MDS of -126dBm pre OFF and -132 dbm with Pre ON. This on 20 meters
the s+n/n ratio with PRE ON is 25dBm,
On 40mt i've got -124 and -127 and a s+n/n of 20
I've no rf generator for Hi band testing but i scheduled a test to a friend's house to make more accurate testing. I wish i would have better result.
Max IW0GXY
http://www.iw0gxy.it