ORIGINAL MESSAGE: On Mon, 10 Aug 2009 11:19:57 -0700 (GMT-07:00), Colin Lamb <k7fm at teleport.com> wrote: > As I recall, almost all of the 6146 rigs, along with the novice transmitters, use 2.5 mh rf chokes. And, of course, there is the ARC-5. REPLY: I keep forgetting about you QRP guys. I was talking REAL amplifiers. :-) 73, Bill W6WRT