At one point, myself and K7OLN were living about 700 feet apart. Both of us were very active, and as a result could not operate on the same band at the same time. I purchased an Elecraft K3, and that helped, K7OLN then purchased a K3 and that helped more. Then Elecraft came out with a low phase noise synthesizer, the KSYN3A. This helped a lot. As it turns out I was able to document the changes as we each added the new sensitizer boards to our radios. This set of notes contains a set of images that were taken shortly after Elecraft made the new synthesizer available, and as we made the changes to each K3.
Two K3s were used in this test and the old synthesizers were replaced in stages. The K3s were separated by approximately seven hundred feet, both feeding resonant antenna, and both running approximately 50 watts each when tested. K3 A, was owned by NK7Z, and K3 B, was owned by K7OLN. Both started with the old synthesizer in place.
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