Microwave oven interferes with Amazon Fire stick on WIFI

I've never encountered this before but it seems that our Panasonic microwave oven is interfering with the WIFI stream from my router to an Amazon Fire stick.  I never noticed it before but have been using the TV streamer more than usual and the timing has been noted.  I have used a microwave detector around the oven while running full power and found no leakage.  The firestick runs on an AC adapter so power source is not the entry point.  A bit puzzled and started moving the router location to see if that was the fault, no difference.  Don't know where to look next, going to break out the spectrum analyzer but it only goes up to 2 GHZ and would need to rent the plug in for up to 10  GHZ  to look extensively at the wifi signal.  Not in stock to rent and two week delivery if I buy.  

Watching for patterns (e.g. noticing the interference whenever you run the microwave) can definitely be a big piece to solving the problem

Interference can be an interesting phenomenon; I have a pair of PC speakers that crackle with static about 1-2 seconds before my phone notifies me of a new SMS message.  I haven't really dug into the RF analysis to see why it does that, but I assume those cheap speakers are poorly insulated and close enough to the phone that they render the static.

You might want to take another look at the AC power source for both your router & Firestick; Depending on how things are wired, sometimes the wiring itself can act as an antenna that will amplify reception of or transmit interference.  Moving the router/or microwave to a different circuit may be a huge help.

The router is in another room and on a different circuit.  The microwave is in the kitchen, on a different circuit and the firestick is in the living room on a different circuit.  All are distant by 40 feet or more from each other..  I will attempt to wrap the DC power cable from the adapter to the firestick and see if that is the point of entry.  No patterns or indication of lost signal, just a blank screen with a blue circle rotating and returns as soon as the microwave shuts off.

The original Radios were made by passing a spark between two Contacts. That's what's causing your interference.

Set things up so that can hear the problem throughout the house, then go round switching off, each piece of equipment in turn, until you find the cause. It may be the item itself or a problem in it's cables. Dry Joints are frequently the cause.

A "Dry Joint" is a joint that has been successfully soldered but, there is a crack in the solder, which may be tiny but the power can spark across it.

Edited by wee-eddie, 24 January 2021 - 02:47 PM.

If the Fire stick is connecting to the router using the 2.4GHz band, could you switch the router over to the 5GHz band in the router's settings? Or would that interfere with the rest of your setup?