Waring. I was contacted by someone I believe was using another ham's callsign and name, KI7JCW - Peter H Quach. His real name is Kelvin Hoskinson and he uses a PayPal email of firstname.lastname@example.org. His communication email was email@example.com. I just called PayPal to put a hold on the funds and am now contacting my bank. Hopefully I can stop this money from getting to this fraudster. He was selling an Elecraft KXPA100 amplifier and got my interest from a previous ad on QRZ.com. He contacted me by email with his offer. I should have been suspicious from the start.