A hardware device or server software that captures packets transmitted in a network for routine inspection and problem detection. Also called a "sniffer," "packet sniffer," "packet analyzer ...

RF components such as connectors, cables, antennas, and PCB traces need characterizing so you know how they will perform.

Network Analyzers are frequently used for measuring filters, making them extremely valuable for building radios and general mucking about with RF. They are, however, extremely expensive.

The NanoVNA made network analyzers cheap enough for almost everyone. Now you can get a $49 spectrum analyzer to go with it. Is it worth it? Watch [IMSAI Guy]’s video after the break for his opinion.

Signal Hound – manufacturer of accessible, versatile, precision test equipment – announced the release of the highly anticipated VNA400 to its expanding product line.