Garry & All: Latest SIW capture with 300kHz LPF and converter driving single FT817 rx with TCXO (has not been calibrated in a few days, showing .15 Hz low) https://www.dropbox.com/s/ec156y13nsr0kal/capt00065%20%282%29.jpg?dl=0 Peak noise with no signal just after this capture -60 RX on the SW transformer end of my EWE antenna.... 73 Mike wa3tts