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Can you call a cell phone in the microwave?

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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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#564624 — Can you call a cell phone in the microwave?

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?




-- 

sci.physics is an unmoderated newsgroup dedicated
to the discussion of physics, news from the physics
community, and physics-related social issues.

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#564636

Sam Wormley <swormley1@gmail.com> wrote:
> Can you call a cell phone in the microwave?

If you can, you had better get the door seals fixed.


-- 
Jim Pennino

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#564719

In article <17o8sc-ej3.ln1@mail.specsol.com>, jimp@specsol.spam.sux.com 
wrote:

> Sam Wormley <swormley1@gmail.com> wrote:
> > Can you call a cell phone in the microwave?
> 
> If you can, you had better get the door seals fixed.

Whether or not the phone works says nothing about the effectiveness of 
the door seal.

Cellphones use 800-900 MHz and/or 1850-1990 MHz, while microwave ovens 
run at 2450 MHz.

Almost all contemporary microwave ovens use choke joints for door seals, 
and they are very frequency-dependent (i.e. they are tuned to only work 
really well at 2450 MHz), so they would probably not be a good shield 
against cell frequencies.

Very early microwaves sometimes used a physical "short" for a door seal 
(often a monel-metal braid over a silicone foam strip), but those got 
contaminated easily and then didn't work so well. Plus being very 
difficult to clean.

Isaac

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#564795

Very informative!
But when I get home I'll put my cell
in the microwave, and have my son call me

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#564644

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.


Tanks!

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#564717

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.



-- 
Poutnik ( the Czech word for a wanderer )

Knowledge makes great men humble, but small men arrogant.

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#564830

On 3/22/2016 11:37 PM, Poutnik 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.
>
>
>

agree, but the cage is for 2400 MHz and up to lower the maggie output 
leakage to some not so bad region, and perhaps harmonics. seems like 
40db attenuation would be adiquate.  (there are real numbers out there, 
but one has to do field strength to power conversion and that assumes an 
antenna of some sort...)

and assuming same materials would work about the same at 900 MHz, it 
seems like the attenuation may be in the range of 30 to 50 db.

=>  SO if one lives near a Cell tower, it may work fine, if one is 10 or 
more miles away, perhaps not.

the dynamic range on tower to cellphone is about 120 dB, (gets 
complicated, 30 watts out into 120 degree antenna, pathloss, sensitivity 
floor of cellphone, and then the reverse path, as cellphone has perhaps 
5W out)

(subtract 40 db of the chamber from the 120db working range of 
cellpone/tower)

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#564996

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

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#565089

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.


-- 
Jim Pennino

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#565128

On 03/24/2016 02:17 AM, 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.
>

I guess that means the door doesn't "work properly", jimp!



-- 

       ___           ___           ___            ___
      /\  \         /\  \         /\__\          /\  \
     /::\  \       /::\  \       /::|  |         \:\  \
    /:/\:\  \     /:/\:\  \     /:|:|  |     ___ /::\__\
   /::\~\:\__\   /::\~\:\  \   /:/|:|  |__  /\  /:/\/__/
  /:/\:\ \:|__| /:/\:\ \:\__\ /:/ |:| /\__\ \:\/:/  /
  \:\~\:\/:/  / \:\~\:\ \/__/ \/__|:|/:/  /  \::/  /
   \:\ \::/  /   \:\ \:\__\       |:/:/  /    \/__/
    \:\/:/  /     \:\ \/__/       |::/  /
     \::/__/       \:\__\         /:/  /
      ~~            \/__/         \/__/

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#565225

benj <none@gmail.com> wrote:
> On 03/24/2016 02:17 AM, 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.
>>
> 
> I guess that means the door doesn't "work properly", jimp!
 
To me it means that there is nothing on the door that is frequency dependant.
 

-- 
Jim Pennino

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#565135

I just put my cell in my
microwave and called it.
It rang.

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#565248

On 3/24/2016 10:22 AM, john wrote:
> I just put my cell in my
> microwave and called it.
> It rang.
>

was the microwave on ?

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#565409

On 3/24/2016 10:22 AM, john wrote: 
> I just put my cell in my 
> microwave and called it. 
> It rang. 
> 
Sergio asked
"was the microwave on ? "
Yes!?
I thought that was the point!?

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#565518

On 03/25/2016 08:49 AM, john wrote:
>
> On 3/24/2016 10:22 AM, john wrote:
>> I just put my cell in my
>> microwave and called it.
>> It rang.

Did you remember to close the door?

> Sergio asked
> "was the microwave on ?"
> Yes!?
> I thought that was the point!?
>
John, if you turn the microwave on then the phone won't ring.
:-)




-- 

       ___           ___           ___            ___
      /\  \         /\  \         /\__\          /\  \
     /::\  \       /::\  \       /::|  |         \:\  \
    /:/\:\  \     /:/\:\  \     /:|:|  |     ___ /::\__\
   /::\~\:\__\   /::\~\:\  \   /:/|:|  |__  /\  /:/\/__/
  /:/\:\ \:|__| /:/\:\ \:\__\ /:/ |:| /\__\ \:\/:/  /
  \:\~\:\/:/  / \:\~\:\ \/__/ \/__|:|/:/  /  \::/  /
   \:\ \::/  /   \:\ \:\__\       |:/:/  /    \/__/
    \:\/:/  /     \:\ \/__/       |::/  /
     \::/__/       \:\__\         /:/  /
      ~~            \/__/         \/__/

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#565825

On 3/25/2016 12:47 PM, benj wrote:
> On 03/25/2016 08:49 AM, john wrote:

>> On 3/24/2016 10:22 AM, john wrote:
>>> I just put my cell in my
>>> microwave and called it.
>>> It rang.
>
> Did you remember to close the door?
>
>> Sergio asked
>> "was the microwave on ?"
>> Yes!?
>> I thought that was the point!?
>>
> John, if you turn the microwave on then the phone won't ring.
> :-)
>
>
>
>

so put the phone in the microwave,
	close the door,
	turn it on HIGH POWER,
	for 10 min,
	and step back to 6 foot away.

try calling it about 9 or 10 min after starting microwave.

Let us know what happens.

(remember HIGH POWER)

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#565874

Only if you have a microwave big enough to get into!
-- 
Virgil
"Mit der Dummheit kampfen Gotter selbst vergebens." (Schiller)

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#565898

I HAD it on high power!
Sheesh.
It's ALWAYS on high power- they ALL are.

But, I didn't waste the energy.
I put in a can of Ensure to heat up for
the old grandma. She likes them
warm.

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#565542

john
I just put my cell in my 
microwave and called it. 
It rang. 
----------

You must have been squished in there

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#565363

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

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