Orbi WiFi 7 RBE973
Reply

Re: Radio Interference with ham radio 2 meter band.

espalding
Aspirant

Radio Interference with ham radio 2 meter band.

Came across the same issue as previous topic.  NetGear 36 router causes interference on 144.710 mHz.  Unpluging the power at the router eliminated the issue.  That frequency is used for the input to the local 2 meter repeater.  As soon as I am 15-20 feet away outside of my mobile home with a handheld ham radio, the interference stops.  SOP for ham repeater operations when the repeater goes down, is to use the input frequency for simplix communications, as in a disaster situation for local communications, including with our hospitals.  With my base station inside the mobile home, I cannot escape the interference.  This can be a serious issue for emergency communications and must be addressed, as others may face the same interference on this FCC controlled frequency.

Message 1 of 4
antinode
Guru

Re: Radio Interference with ham radio 2 meter band.

> Came across the same issue as previous topic. [...]

 

   Thanks for the helpful link.  Perhaps this one?:

 

      https://community.netgear.com/t5/x/x/m-p/2060792

 

> [...] NetGear 36 router [...]

 

    "NETGEAR36"?  Either way, it's not a model number.  Look for "Model"
on the product label.

 


> [...] You could try shielding.

 

   Still my suggestion.  If the spurious emission is from the computery
stuff in your mystery "router", rather than from its wireless-network
radio antenna(s), and the antenna(s) on your mystery "router" are
external, then I'd expect some (grounded) metallic screen around the box
to have some effect.  But I haven't run the experiment on your mystery
"router", so I know nothing.

 

   Amateur radio operators are expected to know about such things, no?

Message 2 of 4
espalding
Aspirant

Re: Radio Interference with ham radio 2 meter band.

What do you expect for an old guy who was on the cutting edge of personal computers and now can barely dial his smartphone! I have an N300 Wireless Router , WNR2000v4 . No external antenna. Only been in ham radio for a few years, so surprise, surprise, I don't know everything yet; wasn't born knowing everything like a few people I know. Shielding? Perhaps, but I don't know off-hand what to try. I don't have a Faraday cage at the moment. Something else I will have to Google. But the point is, this device should not be putting out electromagnetics on the FCC regulated frequencies.

Model: WNR2000|Wireless-N Router
Message 3 of 4
antinode
Guru

Re: Radio Interference with ham radio 2 meter band.

> [...] No external antenna. [...]

 

   That could make it tough to add a cage without blocking the desired
signals.  Otherwise, I'd try some aluminum window screen.  Plenty of
other models have external antennas.

 

> [...] But the point is, this device should not be putting out
> electromagnetics on the FCC regulated frequencies.

 

   As suggested elsewhere, some research on "FCC Part 15" might be
interesting.  Practically any device with an oscillator emits something,
and square waves (and other pulse trains) are rich in harmonics.

Message 4 of 4
Top Contributors
Discussion stats
  • 3 replies
  • 925 views
  • 1 kudo
  • 2 in conversation
Announcements

Orbi WiFi 7