A 2.3GHz receiver converter for the Yaesu FT817 allmode transceiver
#receiver
#converter
#2.3GHz
#Yaesu FT817
#transceiver
#RF
#ham radio
#allmode
#communication
#wireless
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Wireless Keylogger circuit
The Wireless Keylogger consists of two main building blocks: the transmitter and the receiver. The actual keylogging takes place in the transmitter, which is in fact a PS/2 hardware keylogger, with a built-in 2.4 GHz wireless module. Captured keystroke data...
Rf Preamplifiers Circuit
In this basic MAR-x-based circuit, both the input and output consist of a single DC-blocking capacitor (C1 for the input and C2 for the output, respectively). The DC power supply network, which includes L1 and R1, is connected to the...
Wireless mains voltage tester
This circuit is designed to test the presence of mains voltage without direct electrical contact with the mains line. The core component of this circuit is the CMOS IC CD4033, which features a five-stage decade Johnson counter and an output...
Simple RF Power Meter
Many beginners trying out their skill with QRP TX for the first time have to overcome many problems before they are able to come on the air. One usual complaint is that everything is working fine, but the signal is...
High Performance Regen Receiver
A new high-performance regenerative receiver is available as a kit. The inclusion of an innovative regenerative detector circuit enhances sensitivity and overall performance.
The regenerative receiver kit is designed to provide users with a high-quality radio frequency (RF) reception experience. The...
Wireless Car Alarm circuit diagram
This circuit is a wireless car alarm system constructed using two modules: a transmitter module and a receiver module. It operates on FM radio waves and is suitable for vehicles with a power supply of 6-12VDC. A voltage stabilizer can...
RF OSCILLATOR CIRCUITS
A widely recognized circuit is the Hartley oscillator, which is characterized by a tapped coil within the LC tank circuit. The tap point of the coil is grounded. The oscillator's amplifier section functions as a common-emitter amplifier, resulting in the...
RF oscillator uses current-feedback op amp
A current-feedback amplifier is a well-known component with many uses. Its basic block diagram shows that its input stage is a voltage follower in practice, a symmetrical emitter follower. The configuration samples the output current, converts it to voltage across...
Tuned Rf Wavemeter
L1 and L2 form a tuned transformer with an optimum turns ratio of approximately 1:3. L2 and C1 are used to tune to the desired frequency. The frequency range can extend from 10 kHz to over 200 MHz, depending on...