Transmit output aid carrier alarm circuit

Emergency Egg Locator Beacon EELB circuit

This project was inspired by a circuit that a friend, Simon Field, showcased. He built a simple transmitter circuit using a 1 MHz "can" oscillator and a serial connector. In his circuit, he utilized a computer to turn the transmitter...

simple tv audio video transmitter

A simple TV audio-video transmitter circuit can be constructed using this schematic diagram. This circuit allows for the transmission of video signals from a VCR or other devices to a TV without the need for cables. The video signals input...

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...

Home Security System

This alarm circuit activates when switches S1 through S5 are engaged. This action illuminates LED1 and triggers transistor Q1 through integrated circuits IC1C and IC1D. Relay RY1 is configured for self-latching. Switch S10 is utilized for resetting the circuit. When...

Telegraph Transmitter in the Pilot Radios Radio Design magazine 1930s

The TPTG transmitter has been transformed into a modern TNT model. This transmitter can utilize the existing K-111 power pack for both the transmitter and receiver, eliminating the need for a separate power supply unit. Building this compact transmitter allows...

Dummy Transmission Circuits for Subcutaneous Transmitter

The project involves the development of a miniature transmitter suitable for implantation in a rat's body, capable of transmitting 416-bit data samples at a rate of 400 samples per second. It is designed to have a detection range of three...

tx atv

This project was developed in collaboration with several other operators, particularly Marco IW1DGG, within a local radio club. The initial goal was to create a simple transmitter capable of providing sufficient power to excite the local ATV repeater. However, suitable...

CW 250mW transmitter

Here is a simple little HF TX. It may be modified for all the HF bands, but the details given are only for the 7MHz band. The basic transmitter uses two transistors; BC547 (as usual) and will deliver over 250mW...

1W-cwtransmitter

This is a small transmitter designed to fit inside a plastic Easter egg. It delivers approximately 1 W of measured RF output into a 50-ohm dummy load and does not generate any heating issues within the circuit. The crystal used...