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REPLYADDR lars@beagle-ears.com
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[Folloup-to alt.unix.geeks]

> On 11/12/2025 21:18, Carlos E.R. wrote:
>> Home made with a box of Pringles. just google for "pringles wifi antenna".

On 2025-12-24, mm0fmf  wrote:
> Also Google cutoff frequency and see that the Pringle tube is too small 
> in diameter to be effective at 2.4GHz.
>
> Of course, designs on the internet do not have to follow the laws of 
> physics! :-)

As a wireless applications engineer, I have always shaken my head
at the pringles can antenna, which if well made can have a gain up
to at most 8 dBi or so. For less than $50, you can buy a professinally
made flat patch antenna with 8 dBi gain at L-com.com. Apparently, you
can find used ones on eBay for under $30, but why take the risk?
If you need circular polarization, it will be closer to $75.
-- 
Lars Poulsen - an old geek in Santa Barbara, California

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