low power on shortwave
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Shortwave antenna amplifier
This is a wideband shortwave (SW) antenna amplifier. The frequency range spans from 1 to 30 MHz, featuring a medium gain of 15 dB. The input stage utilizes an MPF102 transistor.
The wideband shortwave antenna amplifier is designed to enhance the...
Tuned Radio Frequency (TRF) Receiver
Superheterodyne receivers have been mass-produced since around 1924, but for reasons of cost did not become successful until the 1930s.
Superheterodyne receivers represent a pivotal advancement in radio technology, characterized by their ability to convert high-frequency signals into lower intermediate...
Low Power Regulator Reference
This is a simple circuit of a low-power voltage regulator reference. This circuit can produce a stable voltage reference.
The low-power voltage regulator reference circuit is designed to provide a consistent output voltage, which is crucial for various electronic applications requiring...
Ground pole & 2-Half-Wave Dipole Antenna
This Antenna is most widely used all over the world. For example, when you see a police car it has a transmitter with Ground Pole Antenna. The body of the car serves as ground. It accepts load from a 50-ohm...
rf modem robotics project using pic16f84 microcontroller
RF technology is an exciting field to incorporate into electronic designs. However, for beginners, constructing reliable RF transmitters and receivers can be challenging.
RF (Radio Frequency) technology plays a crucial role in modern communication systems, enabling wireless data transmission over various...
TRF Radios
A small Medium Wave antenna from a walkman with digital radio and a variable capacitor (VC) with two sections connected in parallel from an old Russian radio (2x280pF). It has been noted that in areas with strong signals, optimal performance...
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...
LW, MW and SW bands Receiver
This is a compact three transistor regenerative general coverage receiver with fixed feedback. It's based on the principle of the ZN414 only much higher coverage. The sensitivity and selectivity is relatively good (especially on the LF and MW bands) as...
wireless digital code lock with a status display
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