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 |