Amplitude Modulations
| Circuit / Schematic diagram of | Description |
| Oscillator / Transmitter | |
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Output level can be raised by biasing the audio amplifier's output stage to a higher voltage. |
| AM Oscillator for wireless headphone | |
| High Frequency Source | Frequency source based on Saronix oscillator. |
| AM Transmitter | Transmission range 500kHz to 1600KHz. |
| Limiting amplifier forms AM modulator | |
| Powerful AM Transmitter | Range of transmitter is 2 Km |
| AM/FM Simultaneous transmission | Based on digital IC 4001 |
| AM DSB Transmitter for Hams | The effective output of the circuit is three times that of an equivalent AM transmitter. |
| Antennas | |
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This circuit is designed to be used on receivers that use untuned wire antennas, such as inexpensive units and car radios. |
| AM Loop Antenna | Uses the resonant properties of an inductor and a capacitor connected in parallel to receive weak AM stations. |
| Medium Wave active antenna | The circuit amplifys the input from a telescopic whip antenna. |
| RF Amplifier for external antenna | |
| AM RF amp for internal antenna | AM Booster for clear reception. |
| Receiver | |
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FM receiver with audio amplifier. |
| 40 meter Direct Conversion Receiver | One can listen to amateur radio QSO signals in CW as well as in SSB mode in the 40-metre band. |
| AM Receiver | Simple receiver with three NPN transistor |
| AM to FM Converter | The circuit helps to listen AM station on a FM radio. |
| AM receiver | Receives the AM signal at 118.250MHz the same frequency as used in aircraft communication. |
| Portable AM Receiver | this receiver covers the medium wave band band from approximately 550 to 1600 KHz |