Swr Bridge Circuit | Next Electronics

DIY Test Equipment for Audio and Ham Radio Enthusiasts

This compact device serves as a replacement for the input transistors and related circuitry on a single TO-220 style package. A decision was made to substitute the original driver board with a newly fabricated printed circuit board (PCB) designed by...

Simple RF Detector For 2M

This simple circuit is designed to detect RF radiation leakage from transmitters, faulty connections, broken cables, or equipment with inadequate RF shielding. It is specifically tailored for the 2-meter amateur radio band (144-146 MHz in Europe). The device features a...

antenna tuning unit atu for 27 mhz cb

This antenna tuning unit (ATU) allows half-wavelength or longer wire antennas to be matched to the 50-ohm antenna input of 27-MHz Citizens Band (CB) radios. The ATU is particularly useful in situations where a wire antenna is less visually intrusive...

RF Signal Detector using TDA2822

A signal detector circuit designed for detecting signals in both audio frequency (AF) and radio frequency (RF) ranges. This series is compact and straightforward to construct. The signal detector circuit operates by utilizing a combination of components such as diodes, resistors,...

Ultra wideband RF detector design challenge

A wideband RF detector is being designed, utilizing a series of resonant LC tanks spaced between 5 to 10 MHz apart, with an exception of 1 MHz spacing from 9 MHz onwards. The design of a wideband RF detector incorporating multiple...

Rf-Field Detector

This detector is a half-wave rectifier for RF, which then feeds an operational amplifier. U1A acts as an amplifier, driving meter M1. This circuit can detect milliwatt RF levels from below the AM broadcast band to well above the FM...

HAM RADIO SW RECEIVER

A simple radio receiver circuit is illustrated. This receiver is designed to capture signals from amateur radio stations operating in the shortwave (SW) bands of 10, 15, 20, 40, and 80 meters. The direct-conversion receiver comprises a set of input...

KC2ZPLs Web Design and Electronic Home

KC2ZPL Web Design, electronics, HAM radio, CW, homebrew construction, general electronics, high voltage, experimenter's web page. The KC2ZPL web page serves as a comprehensive resource for individuals interested in various aspects of electronics and amateur radio (HAM radio). It covers a...

Rf Output Indicator

A simple RF detector circuit utilizing a visual indicator can serve as an RF output indicator. This circuit was designed for use as a transmitter ON indicator. The RF detector circuit typically consists of a few key components: a diode, a...