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Using the NanoVNA to measure standing wave ratio (SWR) of an antenna.

Kylie Lamoree, Motus Biologist for Bird Conservancy of the Rockies, explains how to use the NanoVNA to measure the standing wave ratio (SWR) of an antenna. In this video, Kylie describes how to calibrate the NanoVNA to measure from 432MHz to 436MHz, saves that calibration, and measures the SWR of a Laird YS4306 yagi antenna. This antenna is used on our Motus stations to detect tags that transmit at 434MHz (manufactured by Cellular Tracking Technologies). You can follow the same steps to calibrate the NanoVNA to measure from 164MHz to 168MHz, and save that calibration in a different save slot. This will allow you to measure the SWR of an antenna on your Motus station intended to detect tags transmitting at 166.380MHz (manufactured by Lotek Wireless, Inc.). Saving the two different calibrations allows you to easily move back and forth between the two frequencies to measure multiple antennas at your Motus station. For more information about the NanoVNA, visit their official website here: https://nanovna.com/ For more about the Motus Wildlife Tracking System, check out the Motus website here: http://www.motus.org/