Hi Hai,
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RF signal sent from source/point A1.
At one of destinations(e.g. B1) RF signal received.
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RF signal sent from source/point B1.
At one of destinations(e.g. A1) RF signal received.
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Directional antenna (point C1/ connected to tinySA Ultra) is directed to specific direction ==> that antenna observe signals which are mostly coming from that direction.
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Is it Triangle form of positions A1 B1 C1? Which type of antenna are used at point A1 and point B1?
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That is all I can reply to you, for other explanation you should ask someone else (or someone who has HW visible in mentioned YouTube video).
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Regards,
Toni
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