I have a small amp for sale. This amp was my 5w driver for over 40k hrs of CW beacon use as XSH/31. So it's a "classic with history"! :- ) Would be great for WSPR. Details: Semi-homebrew, 10mW in gives 5w out, draws 1.2A at 13v. Has CW keying port via RCA jack. All boxed in die-cast box with heatsink. BNC in/out. Asking $50 + shipping. -Brian, WA1ZMS