AN758 Complete Kit

AN758  300 WATT HF AMPLIFIER COMPONENT SET

The AN758 HF amplifier is a push-pull linear amplifier for 300 watts of PEP or CW output power across the 2 to 30 MHZ band. One of Motorola's new high-power transistors developed for single-sideband, the MRF429, is used in this amplifier design. The AN758 operates from a 50 Vdc power supply. The amplifier employs a push-pull design for low, even harmonic distortion. This harmonic distortion and the 50 Vdc supply voltage make the output impedance matching easier for 50-Ohm interface and permits the use of efficient 1:1 and 4:1 broadband transformers. Modern design includes integrated circuit bias regulators and the use of ceramic chip capacitors throughout the RF section, making the units easily reproducible.

Specifications:

Frequency Range      2 to 30 MHZ

RF Input Power         15-18 watts (typical)

RF Output Power       300 watts

DC Input Voltage       50 Vdc

DC Input Current       14 amps (typical)

The Component Set includes:

1 ea.  Chip Capacitor Set

1 ea.   Discret Capacitor Set

1 ea.   Resistor Set                 

1 ea.   Semiconductor Set

1 ea.   Ferrite Set                    

1 ea.   Transformer Set

1 ea.   Printed Circuit Board     

1 ea.   Matched Transistor Pair MRF429MP

Downloads:

AN758 Application Note

AN749 Application Note

AN758 Construction Hints

AN758  T3 Construction

MRF429 Data Sheet