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superbob201 t1_j6dvxfq wrote

Reply to comment by ashjafaree in ELI5: How do jammers (cellphone etc.) work? Could one block a direct connection to a router? by kenda1l

It may vary with location, but in the USA the lowest wifi frequency is 2.4GHz, and the highest cell frequency is 2.2GHz

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Target880 t1_j6e1rnu wrote

>It may vary with location, but in the USA the lowest wifi frequency is 2.4GHz, and the highest cell frequency is 2.2GHz

That is not true. Look at https://en.wikipedia.org/wiki/Cellular_frequencies_in_the_United_States there cellular communication in use at 39GHz.

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superbob201 t1_j6eceaq wrote

Welp, that's what I get for thinking phone=voice, and looking at those channels (and even then ignoring that carriers have started using data channels to carry voice).

Those bands still don't intersect any of the Wifi bands. The BRS band comes close to Wifi 2.4GHz band, so a new cell jammer could block old an old wifi router if the jammer was either poorly designed, or designed to block wifi as well

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