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escription
O
scillator / Transmitter
4 MHz amplitude modulated Oscillator
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.
A
ntennas
AM/FM/SW active antenna
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.
R
eceiver
AM Radio
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
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