Fred , N5GE and Guy , Thanks all very good explanations and great advice . I am using FW 4.51 and I believe it's good improvement . I have the IF NB turned back and am hearing some weak signals on 6m . just worked CT1HZE .
Ed At 05:10 PM 7/18/2012, Fred Jensen wrote: >Ed, > >First off, make sure you are running the latest production firmware. It >made some major improvements in the NB and NR functions. > >The very nature of any noise blanker will distort the signal and using >it is a trade-off between that distortion ... which sounds a lot like >"noise" ... and the real noise mixed in with the desired signal. The NB >literally punches holes in the signal during noise pulses. As you go to >higher numbers, the blanker gets more aggressive, and typically, the >distortion increases. > >The NAR, MID, and WID settings determine the width of the "holes." For >example, our electric fence periodically starts "ticking" when weeds >grow up under it in the spring. The noise pulses are very narrow, and a >NAR-1 or NAR-2 setting takes them totally out and does not introduce any >distortion that I can hear. A higher NAR setting seems to take them >out, but replaces them with the distortion from the holes in the signal, >which sounds a lot like the original noise pulses. :-) > >73, > >Fred K6DGW >- Northern California Contest Club >- CU in the 2012 Cal QSO Party 6-7 Oct 2012 >- www.cqp.org > >On 7/18/2012 2:28 PM, Ed Stallman wrote: > > I finished K3 Kit 6644 yesterday and noticed today when using the NB > > on 6m that it the NB will generate noise only on a few different > > levels ! With NB Level on then DSP set to off .. I now turn > > IF-NAR from off through the numbers 1 to 7 ...when I get to > > IF-NAR 6 and 7 it is much noisier then 2,3,4, or 5 with 4 being > > best ! Is this normal ? I was thinking the higher numbers would > > reduce more noise ? Using IF-MID and WID 1 has more noise and 7 is less > > >______________________________________________________________ >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 ______________________________________________________________ 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
