PA 20W SG-LAB

  • Transistor Bias Voltage (PTT) Switching options Selectable by Jumper:

    1. PTT is switched ON by connecting PTT pin to the ground.

    2. PTT is switched ON by applying +3....+12V to PTT pin

    3. PTT is switched ON simultaneously with Power Supply Voltage.


    Directional Coupler Voltages:

    1. FWD Voltage Input 0.5V typ. @ 0.5W input power

    2. FWD Voltage Output 3.5V typ. @ 20W Output power

    3. REF Voltage Output - reflected wave , can be used to calculate estimated output SWR