ReceivingCircuit circuit | Next Electronics

A K9AY antenna system and controller has been designed with the intention of creating a more effective unit at a lower cost compared to commercially available versions. The K9AY antenna features a steerable null, maintaining a gain close to unity,...

Field Strength Meter

This circuit is a wideband signal strength meter designed to respond to small variations in RF energy within the VHF spectrum. It is capable of detecting AM or FM modulation as well as a simple carrier wave. The circuit measures...

ANTENNA DESIGN FOR FM TRANSMITTER

Two aluminum rods, each of length "L" in meters, are connected through an insulator as illustrated in the figure. A 75-ohm cable is fed from the center, similar to a conventional TV antenna. This configuration describes a basic antenna system utilizing...

Booster Antenna Circuit 550Khz to 1650Khz

This is a booster antenna circuit designed for frequencies ranging from 550 kHz to 1650 kHz, aimed at amplifying signals received from a telescopic antenna. It covers the medium waveband within this frequency range. To drive low impedance (50 ohm)...

RF Wireless Data Transfer communication Circuit diagram

RF Wireless Data Transfer communication circuit diagram. A wireless communication interface was implemented to facilitate data transfer from one point to another using RF technology. The RF Wireless Data Transfer communication circuit utilizes radio frequency (RF) technology to establish a wireless...

136 kHz QRSS receiver

For digital modes, the ideal receiver should be straightforward, featuring front-end selectivity, manually adjustable gain, and an IF filter. Many functionalities found in HF receivers can be implemented through software. In the collection of components, there was a surplus 1.4...

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...

Antenna Booster for FM AM and SW Receiver

This AM/FM antenna booster circuit amplifies the broadband signal from the antenna. This antenna booster is designed to work for FM, AM, and SW receivers. The AM/FM antenna booster circuit is an essential component for enhancing radio reception across various...

REGENERATIVE_SHORTWAVE_RECEIVER

The receiver consists of multiple subassemblies, including an active antenna, an amplifier featuring regeneration control and band-switching circuitry, an AM detector, a power amplifier, and an output device such as an internal speaker, external speaker, or headphones. Additionally, it is...