XPost: comp.sys.raspberry-pi, alt.unix.geeks   
   From: lars@beagle-ears.com   
      
   [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   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)