Heathkit AT-1 with a used Collins 75A2 and a long wire. This was while a novice (N3BNR). After passing the General test in 1955 at Philadelphia and becoming W3BNR I added a cathode modulator to the AT-1 and viola from CW to AM. -- 47 & 73 de Ed, W3BNR 'Tis said that genius is only a great aptitude for patience.