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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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If you thought you found cheap directional WiFi antennas (2.4GHz or 5Ghz), then think twice

Posted by jpluimers on 2025/02/07

Nice [Wayback/Archive] Thread by @jhewitt_net on Thread Reader App that started with [Wayback/Archive] Joseph Hewitt on Twitter: “I bought some cheap aliexpress directional 2.4GHz antennas. As expected, they aren’t very good. (A small thread)”:

Image

then showed

Using a tool borrowed from @jilles_com, I can see that this antenna is sensitive to various frequencies but not much at ~2.4GHz.

This antenna is best at around 1070MHz or 337MHz and has some sensitivity to 1090MHz meaning it works somewhat okay for ADSB aircraft tracking.

Image

Better buy more reliable antennas that are tuned in better ways.

–jeroen

This entry was posted on 2025/02/07 at 12:00 and is filed under Hardware, Power User, WiFi. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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