When tuning by ear using a wide bandwidth filter, I have found that it is easier if you go from the low tone side to high instead of high to low. I think the higher octave(s) can sometimes confuse you when you go from high to low.
Yes, it is pretty easy to get within 10 or 20 hz by ear. For most any CW work I also would think you'd be ok if you could only manage to get within 100 hz. I bet lots of people could be able to do it with some practice. Still, the auto-spot is a neat feature and i'm looking forward to trying it on the K3. I'm looking forward to trying anything on the K3... 73, Drew AF2Z On Wed, 14 May 2008 04:47:30 -0700 (PDT), Brian/K3KO wrote: > >Guys, > >There is another way to solve the CW spot problem. > >It's called get on the air and work CW. You will quickly develop the skill >of zero beating by ear. >You will find that most CW ops don't use any zero beating gizmo. Much >faster and easier to do it by ear. > >Another thing. Narrow filter passbands help. If you're trying to zero beat >a CW signal with a 2.8KHz filter, it can be an exercise in futiltiy. And >if a human can't do it, don't expect some computerized gizmo to do it well >either. > >Practically speaking, if you've dialed in a 200- 400Hz CW bandwidth and you >peak the signal in the passband, your going to be at most 100Hz off. That >is really plenty good enough for most situations. > >How accurate can zero beating by ear be? The data points I have are from >RTTY. My display indicator reads out deviation from zero in 5 Hz >increments. I can usually get within 10-20 Hz by ear! I'm going to >assume the CW accuracy is similar. > >73 de Brian/K3KO > > _______________________________________________ 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
