Has no carrier,no modulation. There is modulation in the fallback but not on transmit. I have replaced q37/q54&55 with like part. Showing 11.84 volts @ source side of q55 &.12 volts on gate side. Only showing. 07 @ drain of same transistor. I checked the transistors.with a meter before installing. Also checked new irf520 transistors before installing them.. anyone know where I could get a voltage chart for this radio?? Thanks for any. & all help!!!