Raab, Frederick H. Green Mountain Radio Research Company, Colchester, Vermont.
- Continuous-wave (CW) transmitter
- Frequency-modulation (FM) transmitter
- Amplitude-modulation transmitter
- Linear transmitter
- Techniques for high efficiency
- Links to Primary Literature
- Additional Readings
A generator of radio-frequency (rf) signals for wireless communication over some distance, which can vary from the short ranges within a building to intercontinental distances. Most applications utilize signals from very low frequencies (VLF) to extremely high frequencies (EHF); some applications require frequencies as low as 45 Hz or as high as 100 GHz. The radio-frequency output power varies from a fraction of a watt in emergency beacons and portable equipment to several megawatts in long-range, low-frequency transmitters. See also: Radio spectrum allocation
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