Television Training Institute 1943 Receiver
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rf remote control encoder and decoder
This document explains two RF 433kHz remote control chips specifically designed for remote control applications. The IC TWS-434, along with its encoder chip HT-12E from Holtek, forms a high-quality transmitter circuit, while the chip RWS-434, paired with the decoder IC...
5474 tips
The Aristo ART-5474 Accessory Panel is a complete receiver designed to control accessories using buttons A through E on the Train Engineer transmitter. The ART-5474 is capable of controlling two turnouts, one constant load such as lights, and can trigger...
Adjustable-sensitivity field-strength indicator
The LED illuminates when the RF field exceeds the pre-set field strength level. Germanium diodes are recommended. Additional information: Transistors (NPN) include 2N2222, 2N3393, 2N3904, or equivalent.
The circuit described is a simple RF field strength indicator that utilizes an LED...
Dodd Station
Dodd's 1909 receiver has survived and was discovered among various parts purchased at a yard sale. The components were identified from a photograph of the 1909 Station. Many of these parts were utilized in the construction of Dodd's 1912 station,...
RF 433MHz - 3 channels remote control
The schematic is very simple and includes, in addition to Nutchip, with its three driving transistor and LED, the radio receiver. The data come from the OUT pin of the receiver and enter the pin REMOTE remote control. The RESET...
signal Can someone break down how this receiver works
The circuit described is a toy car receiver, which operates similarly to the transmitter but in reverse and with additional filtering. The receiver is tuned to a frequency of 27.145 MHz to capture signals at this frequency. Following the initial...
100 MHz RF oscillator with ATtiny12
A frequency reference for tuning up the RS-232 to 100 MHz RF desktop channel adapter elsewhere on this site, when I found this Saronix crystal oscillator in my junk box. A few minutes with AVRStudio produced an ATtiny12 to make...
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...
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...