Fred, The KNB2 does a good job on impulse noise - those noise pulses with a fast rise time such as ignition noise. I can't explain why it did not attack the ignition noise from the cement trucks.
For the more constant background types of noise - 'popcorn' noise as you described it, the KNB2 does not trigger on them at all because the level is not strong enough and there are no pulses above the threshold. The most effective solution to these background noises is the noise reduction algorithms of the KDSP2. 73, Don W3FPR > -----Original Message----- > > Thinking of building my 2nd K2. I wondered what > the consensus is on HOW WELL DOES THE NB WORK? > in a K2? > > In my spring #5422 K2 - I never could see much > improvement in "noise" elimination. I had > experienced a situation where we had major > trucks near our house (cement job) - and the > ignition or engine electrical noise was major. > The NB, in either setting - semmed to do nothing > noticeable to remove this type of noise. > > The repetitive "popcorn" hissing noise - sort > of regular brownian white noise one hears on > 40 and 20 - wasn't improved on either. > > _______________________________________________ Elecraft mailing list Post to: [email protected] 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
