Monday - This is the JPC-12 portable antenna covering 40M to 6M. Unlike the ATAS-120, which I forgot to pack, needs to be manually tuned by adjusting the telescoping whip and the center loading coil. To tune the antenna, I picked up a NanoVNA-H4. This is a relatively inexpensive, open source vector network analyzer. Antenna tuning is just a subset of its capability. In this picture, I’m showing the SWR (standing wave ratio) for the 20m band.




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