5 ms·

>With solid-state sources, frequency can be shifted (2.4-2.5GHz, for example) to move nodes and anti-nodes around the cavity... Probably not so great for WiFi.

>With solid-state sources, frequency can be shifted (2.4-2.5GHz, for example) to move nodes and anti-nodes around the cavity... Probably not so great for WiFi...

orev 6y ago
WiFi has always used the microwave frequency range, and badly designed microwave ovens (that don’t fully isolate the waves inside) have always been a problem for WiFi. The use of 2.4 GHz in ovens is one of the primary reasons it’s an unlicensed frequency range. The interference is one of the reasons 5 GHz was added as another frequency to use for WiFi.
- anotherhue 6y ago
  Commercial ovens, medical diathermy, and a few shenanigans from GE are why 2.4 is open. [1] I don't believe it is correct to say 5G was added due to interference, the development time ines suggest it was more for throughput. 1: https://www.indiegogo.com/projects/why-2-4ghz-chasing-wireless-history https://www.indiegogo.com/projects/why-2-4ghz-chasing-wirele...
  - kevin_thibedeau 6y ago
    5GHz wireless phones were deployed to deal with a crowded 2.4GHz band flooded by baby monitors and other BW hogs. This was all before wifi became ubiquitous. Funny enough the rare digital spread spectrum 900MHz phones that came out just before the higher frequencies took over were great because of limited use by that time plus minimal interference from walls and analog phones.
lukeschlather 6y ago
Microwave isn't great for WiFi anyway. If the solid-state sources are more focused though, that could be better, it would mean less interference leaking outside the microwave.
m463 6y ago
Yeah, years ago my parents used to have trouble with the microwave and the old 2.4 ghz wifi and I fixed it for them by pinning the wifi channel. I don't know if this will take out all of them, or affect nothing (since we have multiple frequencies and better protocols)
- petra 6y ago
  What did you pin your Wifi to ?
  - Udik 6y ago
    Defrost
  - ethbr0 6y ago
    Presumably a subchannel in the 2.4GHz frequency range that said microwave wasn't spewing as much interference on. https://en.m.wikipedia.org/wiki/List_of_WLAN_channels#2.4_GHz_(802.11b/g/n/ax) https://en.m.wikipedia.org/wiki/List_of_WLAN_channels#2.4_GH...
    - m463 6y ago
      Yes there's a plaque on most microwaves that says the frequency, which is 2.450ghz. That matches channels 7-11 on the page you linked. So you want channel 1.
  - m463 6y ago
    It was the old wifi standard, 802.11b The microwave had a label 2450 mhz which hit channels 7-11, so we put it on 1.
gumby 6y ago
It's not an accident that that's an unlicensed band and it's the responsibility of your wifi set up to deal with it.
p1mrx 6y ago
Someone should calculate the bandwidth required to run an even cooking pattern, and then strongly encourage all manufacturers to share the same narrow band.

>With solid-state sources, frequency can be shifted (2.4-2.5GHz, for example) to move nodes and anti-nodes around the cavity... Probably not so great for WiFi...

orev 6y ago

WiFi has always used the microwave frequency range, and badly designed microwave ovens (that don’t fully isolate the waves inside) have always been a problem for WiFi. The use of 2.4 GHz in ovens is one of the primary reasons it’s an unlicensed frequency range. The interference is one of the reasons 5 GHz was added as another frequency to use for WiFi.

anotherhue 6y ago
Commercial ovens, medical diathermy, and a few shenanigans from GE are why 2.4 is open. [1] I don't believe it is correct to say 5G was added due to interference, the development time ines suggest it was more for throughput. 1: https://www.indiegogo.com/projects/why-2-4ghz-chasing-wireless-history https://www.indiegogo.com/projects/why-2-4ghz-chasing-wirele...
- kevin_thibedeau 6y ago
  5GHz wireless phones were deployed to deal with a crowded 2.4GHz band flooded by baby monitors and other BW hogs. This was all before wifi became ubiquitous. Funny enough the rare digital spread spectrum 900MHz phones that came out just before the higher frequencies took over were great because of limited use by that time plus minimal interference from walls and analog phones.

lukeschlather 6y ago

Microwave isn't great for WiFi anyway. If the solid-state sources are more focused though, that could be better, it would mean less interference leaking outside the microwave.

m463 6y ago

Yeah, years ago my parents used to have trouble with the microwave and the old 2.4 ghz wifi and I fixed it for them by pinning the wifi channel. I don't know if this will take out all of them, or affect nothing (since we have multiple frequencies and better protocols)

petra 6y ago
What did you pin your Wifi to ?
- Udik 6y ago
  Defrost
- ethbr0 6y ago
  Presumably a subchannel in the 2.4GHz frequency range that said microwave wasn't spewing as much interference on. https://en.m.wikipedia.org/wiki/List_of_WLAN_channels#2.4_GHz_(802.11b/g/n/ax) https://en.m.wikipedia.org/wiki/List_of_WLAN_channels#2.4_GH...
  - m463 6y ago
    Yes there's a plaque on most microwaves that says the frequency, which is 2.450ghz. That matches channels 7-11 on the page you linked. So you want channel 1.
- m463 6y ago
  It was the old wifi standard, 802.11b The microwave had a label 2450 mhz which hit channels 7-11, so we put it on 1.

gumby 6y ago

It's not an accident that that's an unlicensed band and it's the responsibility of your wifi set up to deal with it.

p1mrx 6y ago

Someone should calculate the bandwidth required to run an even cooking pattern, and then strongly encourage all manufacturers to share the same narrow band.