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Re: Can you call a cell phone in the microwave?

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On 03/25/2016 01:55 AM, isw wrote:
> In article <ucdcsc-3tf.ln1@mail.specsol.com>, jimp@specsol.spam.sux.com
> wrote:
>
>> isw <isw@witzend.com> wrote:
>>> In article <nct6bl$1rj$1@dont-email.me>,
>>>   Poutnik <poutnik4nntp@gmail.com> wrote:
>>>
>>>> Dne 22/03/2016 v 22:43 Sergio napsal(a):
>>>>> On 3/22/2016 3:16 PM, Sam Wormley wrote:
>>>>>> Can you call a cell phone in the microwave?
>>>>>>> https://www.youtube.com/watch?v=ot4_jVFXxUU
>>>>>>
>>>>>>> Do cell phones placed in a microwave still receive signals? What is
>>>>>>> the difference between microwave oven radiation and the signals used
>>>>>>> by your phone?
>>>>>>
>>>>>
>>>>> put your cellie in the microwave for 10 min on high.
>>>>>
>>>>> report back here on what happened.
>>>>>
>>>>
>>>> Question is not related to active oven mode.
>>>>
>>>> But as frequency of cell phone signal 900-1800 MHz
>>>> is similar to one of Microwave oven - AFAIK 2400 MHz ,
>>>> attenuation of the Faraday cage of the oven shielding
>>>> should be comparable.
>>>
>>> The metal box should work fine as a shield. The choke-joint door seal,
>>> maybe not. To work properly, it needs to be very close to a quarter-wave
>>> at the desired frequency.
>>>
>>> Isaac
>>
>> A quarter wave at 2.45 GHz is 3 cm.
>>
>> I just looked at my microwave and there is nothing on the door that is
>> anywhere near 3 cm in size.
>
> It's behind the plastic "frame" on the inside of the door. It'll be
> folded into an "L" shape to keep the door from being so thick.
>
> <https://en.wikipedia.org/wiki/Waveguide_flange>
>
> Isaac
>
Microwave doors do not have choke-joints! They simply use the flat thin 
gap between the door face and the oven face as an attenuator. Because 
the gap is much less than a wavelength the waves are evanescent and 
decay rapidly just as the waves through the holes in the mesh you look 
through into the oven. Evanescent attenuation is not resonant and hence 
very insensitive to distance (like door gets old). Microwave ovens have 
switches so that if door is not closed tight (and gap small) it won't 
operate.

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Can you call a cell phone in the microwave? Sam Wormley <swormley1@gmail.com> - 2016-03-22 15:16 -0500
  Re: Can you call a cell phone in the microwave? jimp@specsol.spam.sux.com - 2016-03-22 20:57 +0000
    Re: Can you call a cell phone in the microwave? isw <isw@witzend.com> - 2016-03-22 21:50 -0700
      Re: Can you call a cell phone in the microwave? john <johnsefton288@gmail.com> - 2016-03-23 07:04 -0700
  Re: Can you call a cell phone in the microwave? Sergio <invalid@invalid.com> - 2016-03-22 16:43 -0500
    Re: Can you call a cell phone in the microwave? Poutnik <poutnik4nntp@gmail.com> - 2016-03-23 05:37 +0100
      Re: Can you call a cell phone in the microwave? Sergio <invalid@invalid.com> - 2016-03-23 11:11 -0500
      Re: Can you call a cell phone in the microwave? isw <isw@witzend.com> - 2016-03-23 21:05 -0700
        Re: Can you call a cell phone in the microwave? jimp@specsol.spam.sux.com - 2016-03-24 06:17 +0000
          Re: Can you call a cell phone in the microwave? benj <none@gmail.com> - 2016-03-24 10:55 -0400
            Re: Can you call a cell phone in the microwave? jimp@specsol.spam.sux.com - 2016-03-24 19:17 +0000
          Re: Can you call a cell phone in the microwave? john <johnsefton288@gmail.com> - 2016-03-24 08:22 -0700
            Re: Can you call a cell phone in the microwave? Sergio <invalid@invalid.com> - 2016-03-24 16:06 -0500
              Re: Can you call a cell phone in the microwave? john <johnsefton288@gmail.com> - 2016-03-25 05:49 -0700
                Re: Can you call a cell phone in the microwave? benj <none@gmail.com> - 2016-03-25 13:47 -0400
                Re: Can you call a cell phone in the microwave? Sergio <invalid@invalid.com> - 2016-03-26 21:23 -0500
                Re: Can you call a cell phone in the microwave? Virgil <VIRGIL@VIRGIL.com> - 2016-03-27 00:13 -0600
                Re: Can you call a cell phone in the microwave? john <johnsefton288@gmail.com> - 2016-03-27 05:32 -0700
            Re: Can you call a cell phone in the microwave? HVAC <mr.hvac@gmail.com> - 2016-03-25 11:40 -0700
          Re: Can you call a cell phone in the microwave? isw <isw@witzend.com> - 2016-03-24 22:55 -0700
            Re: Can you call a cell phone in the microwave? benj <none@gmail.com> - 2016-03-25 05:18 -0400
              Re: Can you call a cell phone in the microwave? jimp@specsol.spam.sux.com - 2016-03-25 18:11 +0000
              Re: Can you call a cell phone in the microwave? isw <isw@witzend.com> - 2016-03-25 21:39 -0700
                Re: Can you call a cell phone in the microwave? jimp@specsol.spam.sux.com - 2016-03-26 05:08 +0000
                Re: Can you call a cell phone in the microwave? benj <none@gmail.com> - 2016-03-26 01:57 -0400
                Re: Can you call a cell phone in the microwave? jimp@specsol.spam.sux.com - 2016-03-26 17:57 +0000
            Re: Can you call a cell phone in the microwave? jimp@specsol.spam.sux.com - 2016-03-25 18:10 +0000
  Re: Can you call a cell phone in the microwave? James McGinn <jimmcginn9@gmail.com> - 2016-03-29 21:31 -0700

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