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I follow up on my test of the RAK 3.0 dBi antenna for LoRa to see if I might be able to improve VSWR by tuning. This video summarizes my attempt (spoiler-- not possible, at least with my skills) and new ideas to evaluate the accuracy of the VIA.

I will send the antenna back to RAK, and would be happy to post their own tests here at a later date. The original test can be viewed here: [ Ссылка ]

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