[Elecraft] APF preview: very nice

[Nick-WA5BDU]

Too bad I didn't get it installed in time for the QRP Zombie Shuffle -- 
lots of signals needing help there.

It's not easy to find just the right signal that might benefit when you 
want to test one, but I've found several in the past couple days.  I 
think the APF is going to be a useful addition here.  I prefer operation 
pretty much the way it is now.  I definitely want a tunable center 
frequency and I prefer minimal complexity beyond that.

73-

Nick, WA5BDU