The MFJ-849 HF/VHF/UHF Digital Wattmeter is a versatile and compact unit designed for ham radio enthusiasts. With a voltage of 13.8 Volts DC, this wattmeter is compatible with a universal range of brands and models. It offers connectivity via VHF and SO-239, making it suitable for use with various ham radio transceivers. Its compact and lightweight design allows for easy handling and portable use, making it ideal for on-the-go monitoring of power levels. Perfect for those looking to accurately measure power output across different bands in their ham radio setup. Like new but untested I’m not a CB enthusiast .