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Simple FM Radio Circuit Using a Single Transistor

Last Updated on January 2, 2024 by Swagatam 214 Comments

When it comes to making an FM receiver it’s always thought to be a complex design, however the one transistor simple FM receiver circuit explained here simply shows that it isn’t the case after all. Here a single transistor acts as a receiver, demodulator, amplifier to constitute a wonderful tiny FM radio. It’s basically based […]

Filed Under: Audio and Amplifier Projects Tagged With: FM, Radio, Simple, Single, Transistor

Make this Crystal Radio Set Circuit using No Batteries

Last Updated on November 30, 2022 by Swagatam 14 Comments

crystal

A crystal radio circuit is probably the simplest form of radio that uses hardly any electronic components, and needs absolutely no external power for the operations. Crystal Radio Concept The only downside of this radio concept is the requirement of a very long antenna and a deep earthing, therefore this unit is not something which […]

Filed Under: Audio and Amplifier Projects Tagged With: Batteries, Crystal, Radio

Crystal Radio Sets with Amplifier Circuit

Last Updated on November 29, 2022 by Swagatam 40 Comments

crystal set amplifier circuit using asingle transistor

A crystal radio receiver, often known as a crystal set, is a simplest form of radio receiver that was widely used in the initial periods of radio. A crystal radio set does not require any external power supply to operate. Instead, it simply makes sound using the energy of the radio signals that is received. […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Crystal, Radio, sets

Transmitter Receiver Circuit for 80-meter Ham Radio

Last Updated on February 16, 2021 by Swagatam 12 Comments

80 meter transmitter compressed

This tiny and simple transmitter, receiver set will allow you to communicate over 100 of miles across the world, by tuning to 80-meter amateur ham radio stations. What is 80-meter Band The 80-meter uses 3.5 MHz frequency band for radio communications, which gets the permissions under amateur radio use Between 3.5 to 4.0 MHz in […]

Filed Under: Wireless Circuits Tagged With: Meter, Radio, Receiver, Transmitter

Single Transistor Radio Receiver Circuit

Last Updated on October 7, 2020 by Swagatam 55 Comments

one transistor radio circuit

This is probably the simplest radio receiver circuit that one could ever imagine of making. The circuit is so simple that it could be finished assembling within a few minutes and you are already listening your favorite programs over it. Introduction What are the fundamental criteria associated with radio reception? An antenna stage, a band […]

Filed Under: Audio and Amplifier Projects Tagged With: Radio, Receiver, Single, Transistor

Make a Walkie Talkie Circuit using FM Radio

Last Updated on February 27, 2020 by Swagatam 59 Comments

walkietalkie

In this post I have explained how to make a simple homemade walkie talkie circuit using ordinary FM transmitters and FM radios. It’s a perfectly tested design by me. I could talk with my nephew who stays on first floor through a pair of these transmitters with crystal clear transmission. Overview In one of my […]

Filed Under: Wireless Circuits Tagged With: FM, Radio, Talkie, Walkie

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