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Amateur Radio Linear Amplifier 2-30MHz 140W
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The amplifier operates across the 2-30 MHz band with relatively flat gain response and reaches gain saturation at approximately 210 W of output power. Both input and output transformers are 4:1 turns ratio (16:1 impedance ratio) to achieve low input SWR across the specified band and a high saturation capability. When using this design, it is important to interconnect the ground plane on the bottom of the board to the top, especially at the emitters of the MRF454s.


Parts List:
Component: Value: Datasheet: Qty:
Resistor

100K

 Not Available 01
Resistor

10K

 Not Available 02
Resistor

33, 5W

 Not Available 01
Resistor 10, ½W Not Available 02
Resistor 100 Not Available 01
Capacitor 33pF Not Available 01
Capacitor 18pF Not Available 01
Capacitor 10uF, 35VDC Not Available 02
Capacitor 0.1uF Not Available 01
Capacitor 1uF Not Available 01
Capacitor 0.001uF Not Available 01
Capacitor 330pF Not Available 02
Capacitor 910pF Not Available 01
Capacitor 1100pF Not Available 01
Capacitor 24pF Not Available 01
Capacitor 500uF, 3VDC Not Available 01
Diode 1N4001 Available 01
Diode 1N4997 Not Available 01
Transistor 2N4401 Available 02
Transitor MRF454 Available 02
Transformer 16:1 Not Available 02
Relay 12VDC Not Available 01