“Ham radio is the use of radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, etc. Developing a ham radio project may requires using an antenna analyser, a device that is used for measuring input frequency and impedance. There are many types of antenna analysers such as Anritsu VNA Master, RigExpert, MiniVNA, and others. But these analysers are very expensive to buy. They starts from $500 up to thousands of dollars and they are also hard to hack. This guide shows how to construct and use a DIY HF antenna analyzer using Arduino for less than $50. The project consists of three parts; a Microcontroller, AD9850 DDS module, and a VSWR Bridge.”
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