Paul, > Is your PSK carrier at 185.800 make a 800 HZ tone? > Man I forgot how to run PSL!!! Yes. I'm mixing 185.000 with an 800 Hz PSK signal to transmit on 185.800. So if you tune a cw receiver with a bfo offset of -X- Hz to 185.800 kHz, you should get the -X- Hz tone. John A.