I've been thinking about the recently reported "cw pileup" problem, wondering why this apparently wasn't noticed before-- particularly by the VP6DX operators.
I'm using a K3 with a single receiver, and use the three narrowest roofing filters, operating CW almost exclusively. In combing through large pileups (notably during the recent K5D operations), I've sometimes noticed a blurring or smearing effect caused by multiple signals in a very narrow bandwidth. I'm not certain of this because it is such a dynamic intermittent problem; however it seems to be ameliorated when I turn off the noise blanker. (The K3 NB is so effective, compared to noise blankers on other receivers I've used, that I tend to have it on all the time). My guess is that the VP6DX operators probably never needed the noise blanker in their (presumably) quiet QTH. It may be that the solution to this problem may be different for those using a single receiver K3 versus the dual receiver. It may be that the solution could be as simple as disabling the NB when switching from VFO A to VFO B. Forgive my tardy input to this conversation; however I woke up very early this morning with these thoughts in mind. (I wish I had some thoughts about solving the world's economic problems.) 73, Chuck Guenther NI0C K3/100 s/n 1061 ______________________________________________________________ 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
