Yes thanks Tom, a lot of people have said that its not that bad - I guess I want it to be silent when there isn't anyone on the other end :)
I found some real noise on 6m and the NB cut that out a treat, so alls well. On 25/02/2008 14:56, "Tom Hammond" <[EMAIL PROTECTED]> sent: > Hi David: > > I hear NO NOISE (at all) on any of your recordings! > > Well... what 'noise' I do hear is (to me anyway) 'band noise'... atmospheric > noise and not electro-mechanical noises such as would normally be classified > as 'line noise' or man-made. This actually a pretty good demonstration is a > nice, CLEAR 75-meter band... I certainly wish I had MY 80/75 m band noise to > be THAT low level all of the time. > > The BACKGROUND (band noise) which you hear on this band is NORMAL and should > not be considered to be unusual. And there is NO noise blanker of which I am > aware that will remove what you recorded. However, enabling the [NR], Noise > Reduction feature of the K3 will help to significantly REDUCE the level of > the background noise, albeit lending a slightly 'watery' sound to the real > received signal... we seldom get something for nothing these days. > > 73, > > Tom Hammond N0SS > > At 02:47 02/25/2008, David Ferrington, M0XDF wrote: >> I'm still having trouble determining if what I hear is noise that NB should >> get rid of. This is because I'm a relatively new Ham without the experience >> to know what I'm hearing. >> >> So I have made a recording on the noise and it is available from >> <http://homepage.mac.com/davidferrington/FileSharing2.html> >> >> I have recorded 3.740MHz in 5 second tracks with a tone between each change >> of NR setting, viz: >> 5 seconds of no NR, 200mS tone @ 700Hz >> 5 seconds of NR F1-1, 100mS tone at 1400Hz >> 5 seconds of NR F1-2, 100mS tone at 1400Hz >> 5 seconds of NR F1-3, 100mS tone at 1400Hz >> 5 seconds of NR F1-4, 200mS tone at 700Hz >> 5 seconds of NR F2-1, 100mS tone at 1400Hz >> etc. >> >> I have found no NB setting that affects this, I can possibly hear a very >> slight change, but it does not cancel the noise. >> I can do the same for the NB settings if people wish. >> >> I would appreciate some feedback on this please, is this just broadband hash >> in my urban neighbourhood from er, broadband and wall warts etc? >> >> Mail me off list if you'd like me to mail you a copy of the file direct. >> >> 73 de M0XDF / K3 #174 >> >> -- >> Why should I fear death? If I am, death is not. If death is, I am not. Why >> should I fear that which cannot exist when I do? >> -Epicurus, philosopher (c. 341-270 BCE) >> >> >> _______________________________________________ >> Elecraft mailing list >> Post to: Elecraft@mailman.qth.net >> You must be a subscriber to post to the list. >> Subscriber Info (Addr. Change, sub, unsub etc.): >> http://mailman.qth.net/mailman/listinfo/elecraft >> >> Help: http://mailman.qth.net/subscribers.htm >> Elecraft web page: http://www.elecraft.com > > _______________________________________________ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com -- It is unwise to be too sure of one's own wisdom. It is healthy to be reminded that the strongest might weaken and the wisest might err. -Mohandas K. Gandhi (1869-1948) _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
