Radio & RF Circuits

27 MHz Transmitter

This circuit is so small and one can easily fit it in a match box. This circuit generates a small RF power on 27 MHz band. But the out put power is strong enough for hearing on any 27 MHz band receiver in a building. If you want to use the circuit on only one frequency then remove the socket of crystal and directly solder the crystal.

Simple AM Radio Circuit Using TA7642 IC

Here is a simple AM radio circuit using TA7642 IC which is similar to ZN414 IC. The circuit can be operated with a 1.5 volt battery. Use crystal earphone with...

MK484 AM Radio Receiver With TDA7052 Amplifier

The circuit shown here is a ZN414 or MK484 AM radio receiver with TDA7052 Amplifier. ZN414 IC has been discontinued few years ago and now MK484 and TA7642...

AM Radio

The schematic mentioned here is a simple AM radio circuit using high gain preamplifier stage of transistor BC 549...

DIY FM Antenna

Here is a design of a simple diy FM antenna which you can make to receive distant radio stations and improve the reception of your FM receiver...

Simple AM Receiver

The schematic shown below is a simple am receiver circuit uses only one transistor and some other components. The 80 turns coil and 365pF variable capacitor...

FM Receiver Circuit

A good quality sensitive FM receiver circuit or FM tuner circuit. The circuit is build around the TDA 7021T IC which is a FM radio receiver IC. The IC requires only few...

TV Transmitter Circuit

Here's a simple schematic of a TV transmitter circuit or video transmitter circuit which is able to broadcast on VHF between 60 to 200 MHz. The input video can...

SW Transmitter Circuit

A very interesting SW transmitter circuit or shortwave transmitter circuit which is very easy to build and you dont have to make any SW or AM coil for it...

AM Loop Antenna

An AM loop antenna can greatly improve the am radio reception. The diagram mentioned below is a design of AM or MW loop antenna which will greatly...

FM Antenna Booster

Tunable FM antenna booster or FM antenna amplifier circuit which can be used to amplify the faint or distant FM signals. The circuit is using two transistors...

Crystal Radio with Amplifier

The circuit shown below is using a transistor 2N3904 as a preamplifier and an IC LM386 which is amplifing the audio signals coming from transistor to drive a miniature 8 ohms...

How to Make / Build a Crystal Radio
Many electronic hobbiests build home made radio circuits or crystal radio circuits which is very interesting project of electronics. Building a crystal radio circuit...

UHF Antenna Amplifier (Booster)

This UHF antenna amplifier circuit or UHF antenna booster circuit can be used to amplify or boost the signal of UHF band from 400 MHz to 850 MHz...

Cable TV Signal Booster Amplifier

This is a schematic of a cable TV signal booster amplifier circuit which can be used to amplify or boost the signal of cable TV system. Use 75 Ohm coaxial...

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