Radio and communication circuits 2

Here is a simple schematic of a TV transmitter circuit, or video transmitter circuit, capable of broadcasting in the VHF range from 60 to 200 MHz. The input video source can be any CCD camera or VCR. The output power...

Radio harmonic detection circuit

The demodulation and detection circuit is a radio AM intermediate frequency (IF) signal amplifier that performs two-stage detection using diode Dr. It extracts the audio signal from the IF carrier detection and subsequently sends it to the power amplifier stage....

wireless digital code lock with a status display

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Radio Field Indicator Circuit

An RF field indicator is needed to verify power stages and transmitter antennas. This radio field indicator allows for the measurement of radiated energy from antennas. An RF field indicator is a crucial device in the field of telecommunications and broadcasting....

Latest Wireless Car Alarm circuit diagram and explanation

This circuit is a wireless car alarm system composed of two modules: a transmitter and a receiver. It operates using FM radio waves and is compatible with vehicles that have a 6-12V DC power supply. If the vehicle's power supply...

rc1

An Instruction and Reference Book on Radio and Television, Coyne Electrical and Television-Radio School, 1951 This publication serves as a comprehensive instructional and reference guide focused on the principles and practices of radio and television technology as taught by the Coyne...

6 meter vertical antenna

Easy to build homemade 50 MHz (6-meter band) vertical half-wave antenna. Omnidirectional, high gain, low SWR. The proposed design for a 50 MHz vertical half-wave antenna is intended for amateur radio applications, specifically within the 6-meter band. This antenna configuration is...

Icom IC-751 RAM reprogramming

Everything appeared to be functioning normally. The half-duplex operation and pedal control in telegraphic mode allowed the operator to transmit while listening during pauses, seamlessly switching to the standard mode by simply pressing the pedal at the right moment. Previously,...

AM FM Simultaneous Transmitter Using Digital ICs

An FM and AM transmitter integrated into a compact device utilizing the CD4001 integrated circuit. It broadcasts at 20 MHz for AM and 100 MHz for FM. The described transmitter combines both Frequency Modulation (FM) and Amplitude Modulation (AM) capabilities into...