7MHz SSB Ham Radio Transceiver circuit Part 2
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Composed of TDC1808/TDC1809 digital coding control circuit diagram
The TDC1808/TDC1809 is a pair of wireless remote control transmitter and receiver components. They utilize an internal antenna to transmit both digital and analog signals. These components are suitable for various wireless remote control devices. Key features include compact size,...
HF Mic
This RF circuit operates at 7.68 MHz and is supplied with 48V phantom power. It has been tested with a large diaphragm cardioid capsule designed by Ralf Falk, who is also known for creating a LF tube microphone, and with...
Jammer circuit
The frequency jammer operates by generating interfering RF noise centered around a 2.45 GHz carrier frequency. As the power of this noise increases, the signal-to-noise ratio of the wireless communication channel decreases, leading to a higher bit error rate until...
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,...
Hf Preamplifier Circuit
This high-frequency shortwave receiver preamplifier consists of a broadband toroidal transformer (LI-a and Ll-b), a complex LC network that includes a 1600 kHz high-pass filter and a 32 MHz low-pass filter, inductors L2 and L3 (26 turns of #26 enameled...
Video/Audio Wireless Transmitter
In this fast-paced world, there is little time for inconveniences and a greater need for portability and adaptability. The idea for an Audio/Video transmitter stems from this need. There may have been times when you’ve wanted to hook up your...
QRP CW TRANSCEIVER
This is a 3-W, single-circuit board, VFO-controlled CW transceiver for 40 or 30 meters, featuring a direct-conversion receiver with audio filtering, Receiver Incremental Tuning (RIT), and speaker level audio volume. The transmit frequency is generated by Q1 and its associated...
Wireless remote control switch circuit 5
The wireless remote control transmitter circuit consists of control buttons S1 to S16, resistors R1 to R3, a capacitor C1, a regulator diode VS, a crystal oscillator BC1, and DTMF encoder integrated circuits IC1 and IC2. The circuit components are...
Modulation monitor
A broad-tuned receiver demodulates the RF signal picked up by a loosely coupled wire placed near the transmitting antenna.
The broad-tuned receiver operates by utilizing a loosely coupled wire antenna, which is strategically positioned in proximity to the transmitting antenna. This...