How to determine the directional signal

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NPR132

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Feb 21, 2024, 11:18:33 PM2/21/24

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Friends, help me to understand with the help of SDR-RTL or HACKRF one to determine the directional signal WI FI, GSM. Advise a spectrum analyzer program, SDR-RTL or HACKRF one settings and possibly a special antenna to be able to catch directional signal on WI FI, GSM frequencies. Very much needed. Thank you in advance.

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