C-QuAM Stereo Decoder for AM Receiver

For actually hear the AM broadcast in stereo you need a special radio with an AM STEREO decoder chip. The Motorola C-QUAM (Compatible Quadrature Amplitude Modulation) system used by all AM stations which choose to broadcast in stereo today and MC13028 is one of chips to decode the AM stereo transmission.

Simple RF Probe

The RF Probe is one of the handiest accessories you can have when you are working with RF and transmitters. This probe may rank as one of the simplest and cheapest project. It uses only 3 electronic components. When used with a high-impedance DC Voltmeter, it can be used to measure RF voltage (and power), trace RF signals in a new design, and troubleshoot malfunctioning RF circuits.

Digital RF Wattmeter 0-500 MHz

This digital wattmeter is based on microcontroller PIC 16F870 and can handle power from 300nW to 30W. It will only display the power in Watt on the LCD display. The wattmeter is suitable for you who like amateur radio. The wattmeter unit is very accurate for frequency range 0-500 MHz, fast and easy to build.

Radio Frequency Spectrum

You have probably heard about terms "VHF Television", "UHF television", "AM" and "FM" radio, "CB radio", "short wave (SW) radio", and so on. What are all of those different names really mean? What's the difference between the terms?