I've had exactly the same experience. If the offending QRM is outside the passband of the filter, the narrower filter setting helps. However, If the offending QRM is heavily inside the passband (i.e., splatter), it seems that the additional intelligibility gain by capturing more of the desired station's audio bandwidth can often more than offset the additional interference you get from using a wider bandwidth. A lot depends upon the desired station's voice characteristics, but I've played with this quite a bit and the results can be surprising.
Splatter is the enemy of us all, except of course for the idiots who do it intentionally to give themselves "elbow room". One of these days I'm going to start posting spectral screenshots of significant offenders on my web site. 73, Dave AB7E On 11/10/2011 12:21 PM, Bill W4ZV wrote: > > > I found my ears to be the best tool for copying weak signals in the presence > of strong adjacent splatter. For whatever reason they heard better using > the stock 5-pole 2.7k set to a DSP BW of 2.0-2.1k than the 8-pole 1.8k set > to actuate at DSP = 1.9k. I tried many times to use the 1.8k but simply > just found the 2.7k worked better for me. Of course that's just my > experience which wouldn't necessarily apply to everyone. > > 73, Bill > > ______________________________________________________________ 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
