XPost: comp.os.linux.misc   
   From: robin_listas@es.invalid   
      
   On 2025-12-09 11:47, The Natural Philosopher wrote:   
   > First of all thanks to all those who responded on my first efforts to   
   > put a battery power Pi Pico W outside and have it phone home.   
   >   
   > Having eliminated temperature and supply voltage as issues, I delved   
   > into wifi and router logs, and it was clear that it was sometimes   
   > getting a DHCP lease and even occasionally opening a TCP/IP connections   
   > and sending data. And might be dependent on where I parked the car and   
   > the weather.   
   >   
   > I tried putting a tin tray behind the router and that made it worse.   
   >   
   > Now the layout was that a ground floor router through the window and the   
   > garage was not very good at about 30m range.   
   >   
   > Then I remembered I had put an Ethernet port in an upstairs bedroom by   
   > the window in case I wanted to use it as an office.   
   >   
   > It was further away - 35m or so - but much less cluttered path. It just   
   > had to go through a corner of the garage.   
   >   
   > Instantly the router reported about 8-10dB more signal and almost   
   > reliable comms resulted.   
      
   Two ideas.   
      
   Some routers can steer the signal horizontally; the technology is called   
   "MIMO" (https://en.wikipedia.org/wiki/MIMO). You notice because the   
   router has multiple antenas, maybe four.   
      
   Then you can replace the antena on the router or the remote with a   
   directional WiFi antena. Home made with a box of Pringles. just google   
   for "pringles wifi antenna". I made one and it actually works. But maybe   
   they are sold, too.   
      
   ...   
      
   > And I knew all that trig would come in handy one day :-)   
      
   You can calculate it numerically on a computer, by calculating the   
   aproximate integral ;-)   
      
   --   
   Cheers, Carlos.   
   ES🇪🇸, EU🇪🇺;   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)