TK10931V FM / AM Dual IF IC
#FM
#AM
#IF IC
#dual band
#receiver
#tuner
#broadcast
#frequency modulation
#amplitude modulation
#signal processing
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SW Receiver Using MK414
The tuned circuit consists of a variable capacitor and fixed air spaced coil. For the coil, wound between 10 and 20 turns of wire on an empty tube of around 1.5 inches diameter. The turns were spaced so that the...
High power bug
My FM Wireless Microphone has been a very popular project with beginners and experienced constructors alike. It has been used inside guitars and as the basis of a remote control system. I do however, receive many requests for a higher...
FM Bug Detector Kit
This device is designed for individuals concerned about surveillance. An essential tool for any operative is an Electronic Bug Detector, as it helps identify hidden listening devices.
The Electronic Bug Detector serves as a critical instrument for privacy protection in environments...
FM Listening Bug
The one thing every spy needs is a small and well-concealed listening device. The FM Listening Bug Kit provides all the necessary components to construct a compact, single-channel listening device.
The FM Listening Bug Kit is designed for the creation of...
Receiver-Interface Circuit For Preamps Circuit
The purpose of the receiver/interface circuit is to pass RF to the receiver through capacitor C9, while adding DC power to the feedline through resistor R2 and RF choke L7.
The receiver/interface circuit is designed to facilitate the transmission of radio...
FM IF amplifier circuit composed of ceramic filters
This circuit features a ceramic filter integrated with an FM intermediate frequency (IF) amplifier. The FM IF amplifier circuit primarily consists of an input variable voltage regulator (T), ceramic filters (CF1), and additional components such as the IF amplifier and...
FM Listening Bug Kit
The schematic below illustrates a simple circuit that is straightforward to construct. One aspect that is not clearly represented in the schematic is the location of certain components.
This circuit design comprises a basic arrangement of electronic components, typically including resistors,...
Receiver/Scanner Preamp Circuit
The low-cost Mini-Circuits MAR-X series of chips provides a significant advantage for RF builders, featuring inherent 50-ohm input and output impedances essential for RF systems. An MAR-1-based receiver/scanner preamplifier is illustrated. Capacitors Ci and C2 are chip capacitors, with values...
FM (prm) optical transmitter
The basic circuit operates at a frequency of 80 kHz, which is constrained by the combination of the PUT (Programmable Unijunction Transistor) capacitors. The maximum modulation frequency achievable is 60 kHz. The pulse repetition rate is directly proportional to Vin,...