Radio QRP
No description available.
making of wireless car
This document explains how to create a wireless car using integrated circuits (ICs) and requires additional components such as registers. It is recommended to visit an electronics shop to purchase a wireless car kit operating at 413 MHz ASK type,...
Desheng 1012 12-band television sound radio circuit diagram
Desheng 1012 is a 12-band radio circuit diagram that covers FM, MW, SW, and TV sound frequencies.
The Desheng 1012 radio circuit is designed to receive a wide range of frequencies across multiple bands, including FM (Frequency Modulation), MW (Medium...
Circuit Power transmitter of communitarian wireless TV lm1889 audio and video
This small circuit transmitter processes audio signals from a sound table or microphone, as well as video signals from a camera, DVD, or video cassette. It has a composite video output, allowing direct transmission from a computer over a free...
6m wireless remote control switch circuit
This example describes a wireless remote control switch featuring reliable operation and practical characteristics, capable of remotely controlling a 6-channel device within a 6-meter range for household electricity. The wireless remote control switch circuit consists of a wireless transmitter and...
1929 MOPA 80 meter transmitter using a pair of 27 triodes to an 865 tetrode
This transmitter originated as a conventional shunt-fed Hartley oscillator for 80 meters, utilizing a pair of 27 triodes connected in parallel. With 300 VDC applied to the plates of the 27s, it produced approximately 4 watts of output with decent...
RF Decibel Meter Circuit
A DIY RF decibel (or power) meter is an essential instrument in any radio workshop. However, accurate, wideband models can be quite costly.
A DIY RF decibel meter serves as a valuable tool for measuring the power levels of radio frequency...
G0MRF 29.45 MHz Receiver Project
In 2007 and 2008, AMSAT-UK dedicated significant effort to a proposal for the European Space Agency (ESA) to include an Amateur Radio payload on the mass dummy during the maiden flight of the VEGA launcher. This initiative was referred to...
A8V W8EXI 6CL6 One Tube Transmitter
A8V W8EXI 6CL6 One Tube Transmitter. The operation of the 6CL6 transmitter is actually quite sophisticated.
The A8V W8EXI 6CL6 One Tube Transmitter is a compact and efficient radio frequency (RF) transmitter that utilizes a single 6CL6 vacuum tube for its...
DF data transmission module and the super-regenerative receiver module
The DF data transmission module operates at a frequency of 315 MHz and utilizes a surface acoustic wave (SAW) resonator for frequency stabilization, ensuring high frequency stability. The frequency drift remains minimal, at only 3 x 10^-6, across a temperature...