XPost: alt.comp.os.windows-10, alt.home.repair   
   From: ed@somewhere.in.the.uk   
      
   micky wrote:   
   >   
   > Technical qustion about wave valleys and troughs and if two radio   
   > playing the same station will be in phase wrt all frequencies, or if   
   > some will cancel out?   
   >   
   > And why is it low frequencies are famous for cancelling out when out of   
   > phase when high frequencies are just as likely, 0.5, I think, to cancel   
   > each other out?   
   >   
   > Can I just turn off one radio and turn it on again so that the total   
   > odds over both times have increased that by the second time the radios   
   > will be in phase?   
   >   
   >   
   > I have a radio and tv in one bathroom but neither in the other, which is   
   > smaller and adjoins the bedroom.  Sometimes I want to hear the radio   
   > which only gets 'loud' if you are in the same room. I can hear it from   
   > the bathroom but not enough to understand what is said.   
   >   
   > I have another table radio, KLM, expensive, that I had for about 33   
   > years when the speaker switch started to fail**, and I turn that one on   
   > too, to the same station, also at maximum volume, and I can hear in the   
   > bathroom just fine, but I wonder if some frequencies are out of phase   
   > from one radio to the other, cancelling each other, and I'm not hearing   
   > them.   
   >   
   > It seems to me, if one radio is farther from the transmitting antenna,   
   > by 1/2 wave length, the speakers in the two radios will always be going   
   > in the opposite direction from each other.  Maybe.   
   >   
   > In my case, the radios are one above the other, so the distance from the   
   > xmtr is very similar.   But what about within the radio, when the   
   > heterodyning frequency starts.  What if it starts have a cycle after the   
   > first radio?   
   >   
   >   
   >   
   > **So I bought the second radio.  The first one has a pushbutton switch   
   > meant to connect/disconnect a wooden-cabinet stereo speaker, which I   
   > have no room for, and unless I get the switch just right, no sound comes   
   > out at all.  (even the on/off momementary contact switch no longer works   
   > well, after only 33 years, maybe using it at most 6 times a day, so that   
   > 6x365x33=66,000 times.  Aren't switches supposed to last into the   
   > millions of times?  --- It's failing isn't nearly as bad, because I just   
   > keep pushing until it works.  The speaker switch OTOH has a spring that   
   > pushes it out, past its sweet spot, so now it's hard to get to connect   
   > at all.   
      
   Let's rule out Hertzian waves from Net speeds to begin with. If you have   
   an FM radio and a Wifi radio in the same room, there'll be a very   
   noticeable discrepancy.   
   This phenomenon is so well known that I don't need linger on the cause.   
      
   Added to that, you may have two wifi radios together, but processed by   
   different hardware/ software. And here again the cause needs no explanation.   
      
   Your second radio with the dodgy on/off button doesn't even contribute   
   to the mix; and it won't do so until it produces some output sound. A   
   faulty switch is a different problem from an echoing, out-of-sync   
   cacophony of sound.   
      
   Ed   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)