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.
I really advice you to build a wattmeter or some kind of measuring tool when you are working with RF and transmitters. A good wattmeter is very important to have and it will really make your work easier.
Source: 30 W Digital Wattmeter for RF (0-500MHz)
Read more: Radio Frequency Spectrum
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