What is Reddit's opinion of Bingfu Dual Band WiFi 2.4GHz 5GHz 5.8GHz 9dBi Magnetic Base MIMO RP-SMA Male Antenna 2-Pack for WiFi Router Wireless Network Card USB Adapter Security IP Camera?

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https://www.amazon.com/dp/B07MYXG3W8/ref=cm_sw_r_api_i_C55903Z6398HNZNNVYWY_0?_encoding=UTF8&psc=1

Try that^

If the connector is still intact on your PC you don’t need a whole new card. Just a new antenna.

How about a wifi access point in the shop with something like this run outside?

https://www.amazon.com/Bingfu-Magnetic-Wireless-Extender-Security/dp/B07MYXG3W8/ref=sr_1_2_sspa?crid=1ZZTFQI128YDB&keywords=wifi%2Bantenna&qid=1654022589&sprefix=wifi%2Bantenna%2Caps%2C99&sr=8-2-spons&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExSlMyMTdUUzg2UVVRJmVuY3J5cHRlZElkPUEwNzIzMzA5MVFRWUxPNUMwUlRTOSZlbmNyeXB0ZWRBZElkPUEwODU3Mzk3WlM5NFM4UUdKVDBCJndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ&th=1

So based on FCC Part 15, does it make external antennas illegal. For example, this product, can I purchase and attach to my access point and still be within the law?

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https://www.amazon.com/Bingfu-Magnetic-Wireless-Extender-Security/dp/B07MYXG3W8?ref_=Oct_s9_apbd_obs_hd_bw_b3I4TAx&pf_rd_r=SXJ58PBWAYQD9TYTDT7X&pf_rd_p=ff742975-d4e0-5e02-ade3-49e2b240eb8d&pf_rd_s=merchandised-search-10&pf_rd_t=BROWSE&pf_rd_i=3015438011

or

https://www.amazon.com/Computer-Networking-Antennas/b?ie=UTF8&node=3015438011