single conversion 10.7mhz pulse counting receiver
#10.7MHz
#pulse counting
#receiver
#RF
#single conversion
#communication
#signal processing
#radio
#frequency
#demodulation
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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...
A 30 Mtr Direct Conversion Receiver for QRSS
The schematic for the crystal bandpass filter/amplifier board is illustrated, along with images of the assembled and boxed unit. The signal frequency bandpass filter is constructed over a ground plane and enclosed in a separate housing measuring 75 x 75...
Receiver for 50 khz optical transmitter
To achieve maximum range, the receiver should be constructed similarly to a radio receiver front end, as the signals received will exhibit comparable frequency components and amplitudes of the photodiode current. The primary limitation on the receiver's performance is the...
Radio remote control circuit
The receiver circuit depicted in the figure requires the insertion of a plug into the radio headphone jack. When the radio receiver detects a signal from the transmitter, an audio signal is output from the jack. This signal is then...
Interfacing MaxTrac Mobile Radios to Repeater Controllers
This article outlines a reliable, straightforward, and universal method for interfacing Motorola mobile radios from the MaxTrac, Radius, and GM300 series with common repeater controllers. The information provided is also relevant for radio interfaces used in IRLP or EchoLink applications....
RF Decibel Meter
This is a zine dedicated to electronics circuit diagrams, DIY (do it yourself) electronics projects, electrical electronics data sheets, and microcontroller projects for hobbyists, students, consultants, and product designers.
The zine serves as a comprehensive resource for individuals interested in electronics,...
Wideband RF Field Strength Meter
A field strength meter is highly beneficial when dealing with RF devices. It allows for the rapid diagnosis of transmitter circuit functionality and can detect RF signals present in the environment. The simplest form of a field strength meter can...
5W RF power amplifier
Numbered components are designated for PC-board layout purposes. C5 and C8 are disc ceramic capacitors. C6 and C7 are tantalum or electrolytic capacitors. R1, R2, and R3 are 1/4 W carbon composition resistors. Silver-mica capacitors may be substituted for polystyrene...
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...