Danby Mirowave Oven = lousy faraday cage
 

I have a Motorola Cordless Phone model SD4551, and a Danby Mirowave oven
model DMW902W(-1). I tried putting the cordless handset into the closed
microwave and sucessfully paged it. Should I be worried?

Danby Mirowave Oven = lousy faraday cage
 

On Nov 23, 4:20*pm, "Alan Cruikshank"
wrote:
I have a Motorola Cordless Phone model SD4551, and a Danby Mirowave oven
model DMW902W(-1). I tried putting the cordless handset into the closed
microwave and sucessfully paged it. Should I be worried?

Typically the RF seal on a microwave oven is resonant, and I would not
be surprised if it leaks RF at frequencies somewhat removed from the
oven operating frequency.

Cheers,
Tom

Danby Mirowave Oven = lousy faraday cage
 

Alan Cruikshank wrote:
I have a Motorola Cordless Phone model SD4551, and a Danby Mirowave oven
model DMW902W(-1). I tried putting the cordless handset into the closed
microwave and sucessfully paged it. Should I be worried?



Next time you try this, put the oven in defrost mode for about 30
seconds. The "problem" should resolve itself. };^}

Your Motorola phone is 2.4 GHz model the results are interesting, but
not conclusive since the seal is probably only effective for some 10's
of dB's and your phone system has an effective path loss of perhaps 100 dB.

--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"©

"Treason doth never prosper: what's the reason?
For if it prosper, none dare call it treason."

"Follow The Money" ;-P

Danby Mirowave Oven = lousy faraday cage
 

I would think 10mW-ish (+10dBm) leakage around the seal of an oven
would be reasonably safe, this is down from 1kW (+60dBm) output from
the magnetron.

50dB attenuation should have a marked impact on range for a cordless
phone.

Still all rather inconclusive, but maybe time to buy a leakage
detector just to be safe...

-Mark


On Nov 24, 2:56*pm, RFI-EMI-GUY wrote:
Alan Cruikshank wrote:
I have a Motorola Cordless Phone model SD4551, and a Danby Mirowave oven
model DMW902W(-1). I tried putting the cordless handset into the closed
microwave and sucessfully paged it. Should I be worried?

Next time you try this, put the oven in defrost mode for about 30
seconds. The "problem" should resolve itself. };^}

Your Motorola phone is 2.4 GHz model the results are interesting, but
not conclusive since the seal is probably only effective for some 10's
of dB's and your phone system has an effective path loss of perhaps 100 dB.

Danby Mirowave Oven = lousy faraday cage
 

Hey OM:

I have a zapper field strength meter and even on the most attenuated
setting I read a 400W microwave oven form 100ft away. Now if that
thing lites up an NE2 bulb outside the cabinet then you better worry.
The guts of a microwave oven is no faraday cage. You want a real
faraday cage did you try tossing it in the 12 ft section of a built in
swimming pool?

73 OM
n8zu



On Nov 24, 2:42*am, MarkAren wrote:
I would think 10mW-ish (+10dBm) leakage around the seal of an oven
would be reasonably safe, this is down from 1kW (+60dBm) output from
the magnetron.

50dB attenuation should have a marked impact on range for a cordless
phone.

Still all rather inconclusive, but maybe time to buy a leakage
detector just to be safe...

-Mark

On Nov 24, 2:56*pm, RFI-EMI-GUY wrote:



Alan Cruikshank wrote:
I have a Motorola Cordless Phone model SD4551, and a Danby Mirowave oven
model DMW902W(-1). I tried putting the cordless handset into the closed
microwave and sucessfully paged it. Should I be worried?

Next time you try this, put the oven in defrost mode for about 30
seconds. The "problem" should resolve itself. };^}

Your Motorola phone is 2.4 GHz model the results are interesting, but
not conclusive since the seal is probably only effective for some 10's
of dB's and your phone system has an effective path loss of perhaps 100 dB.

--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"©

"Treason doth never prosper: what's the reason?
For if it prosper, none dare call it treason."

"Follow The Money" *;-P- Hide quoted text -

- Show quoted text -