Hmm... It is certainly clean. Not old. I did not notice any flickering lights. Don't see a reason for the house electricity to be overstressed, don't have many appliances...russ_watters said:
No, it is not normal. The two devices work in the same 2.45 GHz ISM band, so it is not unexpected.Hill said:
The oven is about 2.5 m from the router and is almost on a straight line between the router and the computer on which I've noticed the issue. I have another computer in a different direction and am going to check if the same happens there.tech99 said:
The network status in the Control panel shows 80-100% with the oven OFF.tech99 said:
Can you move your router out of the kitchen?Hill said:
I could. But then I wouldn't know about the leakage.berkeman said:Can you move your router out of the kitchen?
Well, just borrow a portable spectrum analyzer from work to make some measurements!Hill said:
I would suspect bad door seals. They are designed as a RF choke tuned for the Magnetron frequency. Door misalignment or damage can cause excess RF leakage on older ovens.Hill said:
Tested. Yes, I can call the phone inside the closed oven.nsaspook said:
If the leakage comes mainly from the door seal, then we have a slot about 1 metre long. This can be considered to be 16 half waves. Each one has an aperture of 0.13 lambda^2 = 4.7cm^2, so radiates 4.7x5 = 20mW. As there are 16 half waves, the power radiated is 16 x 20 = 320mW. If there are directions in which the radiation adds in phase, the effective radiated power will be 16 x 320 =5120 mW, whereas in directions where there is random phase the ERP will be 320mW.russ_watters said:
Have you already had all the kids that you plan on having?Hill said:
Upon further review...berkeman said:
Moving things about could well give you a clue here.berkeman said:Can you move your router out of the kitchen?
And that is a possible reason (plus the door alignment on its hinges (did you ever drop it slightly on a corner??) the microwave seal around the door is a very clever bit of narrow band slot filtering; actual metal to metal contact is not needed over the narrow range of operating frequencies. On the inside of the door there will be a rubber strip with a thin slot running along it. If you ever spilled some sauce / soup the has filled up part of the slot then it could be spoiling the screening . The actual separation between the door and the case might also reduce the screening. Use a damp cloth etc to clean through the slot.nsaspook said:
The really good screening is only over a narrow frequency range so you may need to check the bands your phone uses compared with the oven frequency,berkeman said:
The door may be warping as it heats up?Hill said:
That is what I thought.sophiecentaur said:
Nothing like it on my oven door (LG). Just flat plastic to metal surfaces.sophiecentaur said:
Just FYI, SMS is not sent over the internet as far as I know, but is sent over the cell phone's phone network. That uses a different frequency band than WIFI and microwave ovens, which may or may not explain why you can receive texts while your phone is inside the microwave.berkeman said:
Which is to say, that the insulated quarter-wave door flanges, that work so well to block 2.45 GHz leakage from the oven, are invisible to the other wavelengths, as used for mobile phones. The whole door panel can then become an antenna, coupling phone signals efficiently into the oven.Drakkith said:
They all look different because the plastic / rubber is not a major part of the filter. Under the strip there is a slot in the metal, hidden from view. Obvs it must be better not to have exposed grooves in the plastic as there's no room to accumulate grot.Hill said:
