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.
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...
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...
The schematic mentioned here is a simple AM radio circuit using high gain preamplifier stage of transistor BC 549...
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...
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...
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...
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...
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...
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...
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...
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...
Many electronic hobbiests build home made radio circuits or crystal radio circuits which is very interesting project of electronics. Building a crystal radio circuit...
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...
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...
Here is a schematic of FM, AM/MW and SW antenna amplifier circuit or we can also say it antenna preamplifier circuit which can be used to increase the faint signals of...
Field strenght meter circuit is a very useful device for measuring the RF output of any transmitter or experimenting different antennas with the transmitter...
Here is a schematic of a good quality AM radio receiver circuit. The heart of the circuit is MK484 AM radio IC. It is a high sensitivity and high quality IC...
A small and easy to build circuit which will boost the signals of AM FM and SW receptions.
A useful circuit to increase the range of small fm transmitters. Minimum inupt of the circuit is 100mW, fit the circut in metal case and apply 12 volt to the circuit.
The circuit page is in pdf file format. This circuit runs from 3 to 5 volt and provide a range of 300 meters.
The circuit increases the reception of CW and SSB band. This circuit has a hartely oscillator frequency range across the broadcast band.
This is a very simple and easy to build circuit of AM modulation monitoring for HAM transmitters. You don't have to make any connection with the transmitter only you have to do is that place the coil L1 near the final tank of antenna matching inductor
Many electronics hobbyists and students like to make AM radio receiver by their own. Building an AM radio is a interesting topic in the field of electronics.
Here is a project of a solar powered AM radio receiver circuit. The circuit is built around a MK484 AM radio IC...
The circuit shown here is an AM radio receiver with three transistors. The circuit is using three BC548 transistors and few other parts...
