radio circuit diagram
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RF Digital Wattmeter
The power is measured by the circuit AD8307 over a 50 ohm dummy load. An A/D converter of 12 bit converts the analog output from the AD8307 to a digital number. Since the AD is a 12 bit A/D, you...
Two Homing type Direction-Finding
The antenna consists of two vertical dipoles. Diodes in each dipole allow the circuit to select which antenna is active at any given time. When a positive voltage is sent up the coax feedline, diode D1 conducts and D2 blocks,...
1-2 MHz radio transmitter circuit diagram
A circuit diagram of the T1 is a low-impedance output transformer, featuring a 5000-8 ohm resistor.
The T1 low-impedance output transformer is designed to match the output of audio amplifiers to the impedance of loudspeakers, ensuring optimal power transfer and minimal...
Booster Antenna Circuit 550Khz to 1650Khz
This is a booster antenna circuit designed for frequencies ranging from 550 kHz to 1650 kHz, aimed at amplifying signals received from a telescopic antenna. It covers the medium waveband within this frequency range. To drive low impedance (50 ohm)...
6-17 MHz SW reciever
Its very simple as It uses only 3 transistors 2n2222. The Coils can be altered to change the range of reception by lowering or highering the frequency. More: This circuit is a SW band receiver of range 6 to 17...
wireless FM bug
This project is a miniature, VHF FM (wideband) Wireless Microphone transmitter of the type that are commonly referred to as BUG's. Note that "BUGS" are illegal but "Wide-Band Frequency Modulation Wireless Microphones" (WBFMWMs) are not, as so many people have...
Low Frequency Antennas
Homemade antennas can significantly enhance the performance of AM and FM radios, short-wave receivers, and scanners. For enthusiasts of talk radio, experimenting with AM band antennas can lead to the ability to receive broadcasts from across the country with surprising...
2 Channels RF remote control
Remote controls are often needed to manage various electric devices. There are several types of remote controls available, including infrared, RF (Radio Frequency), and SMS. Basic short-range remote controls primarily utilize infrared and RF technology. A limitation of infrared is...
Amatorki projekt
The circuit is designed to add two identical branches to the existing despreading spectrum. The only difference between the branches is the phase of the PN sequences fed into each branch, specifically at the input of a double-balanced mixer. The...