Transmitters
Course Guide Topics
Duty Cycle
CW [A1A]
AM [A3E]
SSB [J3E]
FM [F3E] (1)
FM [F3E] (2)
Digital
CW Transmitter
Master Oscillator
Buffer / Driver
Power Amplifier
SSB Transmitter
SSB Generation (1)
SSB Generation (2)
Mixer
Linear Amplifier (1)
Linear Amplifier (2)
FM Transmitter
FM Generation
Frequency Multiplier
Power Amplifier
Tx Characteristics
Non-linearity
Output Impedance
Output Power
ERP – Effective Radiated Power
Key Clicks & Chirps
Spurious / Unwanted Radiation
HF Station
High Power Linear Amplifiers
CW [A1A]
Continuous Wave
On-Off keying of transmitter output by Morse Key – about 40% transmission duty cycle – constant amplitude when keyed
Narrow Bandwidth about 50–100 Hz
Simple CW-only transmitter realisable
Course Guide Topics
Duty Cycle
CW [A1A]
AM [A3E]
SSB [J3E]
FM [F3E] (1)
FM [F3E] (2)
Digital
CW Transmitter
Master Oscillator
Buffer / Driver
Power Amplifier
SSB Transmitter
SSB Generation (1)
SSB Generation (2)
Mixer
Linear Amplifier (1)
Linear Amplifier (2)
FM Transmitter
FM Generation
Frequency Multiplier
Power Amplifier
Tx Characteristics
Non-linearity
Output Impedance
Output Power
ERP – Effective Radiated Power
Key Clicks & Chirps
Spurious / Unwanted Radiation
HF Station
High Power Linear Amplifiers