Good morning, I have for sale my 509 Argonaut with external CW filter. I am asking 200 plus shipping. I have the manual and a copy of mods done to it. I also have the Ten Tec KR-40 paddle keyer for sale for 30.00. If bought as a package I would take 245.00 that includes shipping anywhere in CONUS. Thanks for the time. 73 Steve N4TKP