[codefox1]

Well, .5 is a little large for a coupling capacitor, sure you don't mean .05 mfd? Should work anyway. Since this is a transformer set, you don't have to sweat the ground connection. Dummy antennas? Well for regular AM sets with their own loops, about 30 turns of whatever on an empty TP cardboard works to couple generator to radio without direct connection works for me, but for 18 MC, dunno.