Hi, Folks!  I've read some discussions on antenna tuners for a few 
days.  I want to get back into HF bands; have a Tentec 525 Argosy, 
and will be getting a 20-meter vertical.  Question is how accessible 
are antenna tuners, are they automatic, and how do they work?  also, 
I have a Tech. license with CW.  Any help would be greatly 
appreciated.  Thanks.--Matthew Chao, N1IBB.