Have a HD-10 Electronic Keyer manual and a HD-3006 Crossfire Display manual that are surplus. A partial HD-10 "copy" goes for $10. I'll sell this complete ORIGINAL for same. (Either that, or I'll buy someone's HD-10 to go with the manual, hi hi). The HD-3006 is $3.00. I'll ship. Danny (W3ZF) heathkit at juno.com