I finished my MB and hooked it to the controller. I connected the tune control to the control board and wired 12v to controller and 12v to the MB. I wired a switch to the Fn control pins, I wired the BFO pin on the MB to the BFO pin on the control board. I wired the T/R pin on the control board to the R/T pin on the MB. I wired pin 11 on the control board to the LPF pin on the MB. I left all the other pins on the control board empty. My LCD on power up reads: A 14,200 2 USB TX 0 I have power to the TX side of the MB. But pressing the FN does nothing. I can tune up and down freq., it changes from USB to LSB at the right times. but won't come out of tramsmit. Any ideas. K5LRU Harwood, Texas