On 12/14/2010 9:28 AM, Guy Olinger K2AV wrote: > I was at first surprised that the analog IF blanking was retained in > the K3. But over time there have been many posts about successful use > of the IF blanking and IF/DSP combinations, validating Elecraft's > retention, however ancient the issues and artifacts of the IF method > may be.
FWIW: I thought the 1st IF NB in my K3 was broke. A friend suggested I pay more attention to the adjustment. Reluctantly [I figured I already knew how to run a NB, been a ham a lot longer than him], I took his advice leaving DSP NB off so as not to confuse things. He is right. In the contests and other operating over the last 45 or so days, I find that the 1st IF NB will significantly reduce, and in a number of cases totally eliminate a wide variety of noise, including power mains hash, rain static, ignition noise [neighbor kid has Dodge Charger twice as old as he is that he continually tunes up in the driveway], and key clicks. The key is adjustment of the "level" *slowly" rather than running it through it's range quickly, hearing no difference and giving up. A number of times in last weekend's QRRL 10m, I clicked the NB off just to make sure it was working. It was. I begin to hear the NB punching holes in the signal and distorting it at the higher settings, as I would expect. NAR-3/4 seems to hit most of the noise I experience, occasionally really raucous power mains hash succumbs to MED-1/2. I don't get many artifacts until I get to the WID settings. Eventually, I'll go after NR the same way, it hasn't seemed to be working for me either, but I'm pretty sure I'm just too impatient. My K3 is definitely NOT my SX-28, which of course had fewer menu settings. 73, Fred K6DGW - Northern California Contest Club - CU in the 2011 Cal QSO Party 1-2 Oct 2011 - www.cqp.org ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
