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n21roadie
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Reduced noise floor

Thu Nov 19, 2020 6:32 pm

I did a frequency usage and noticed 5270, 5550, 5690, 5775, 5820 all have noise floor of exactly -60 but frequencies above and below is -100 or -90+ ?
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marcin21
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Re: Reduced noise floor

Thu Nov 19, 2020 7:56 pm

can't confirm. but we are over thousand km apart.
 
omarraza
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Re: Reduced noise floor

Thu Nov 19, 2020 10:59 pm

maybe interference was occur if you want to know which frequency is good for you choose the highest one for example -100 is very good than -90 an so on.
 
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bpwl
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Re: Reduced noise floor

Fri Nov 20, 2020 1:39 am

What is noise in wifi? Noise is a RF signal that cannot be decoded as 802.11. NOISE is any signal (interference) that is not WiFi traffic such as cordless phones, microwaves, radar, etc.
This means there is a transmitter using that freq, but is not using one of the 802.11 understood encodings.
NV2 or Nstreme would have been recognized by a Mikrotik device. Others do not understand that signal.
A camera or alarm system may use this, any IOT device, a drone, home automation .... just anything that is sending not 802.11 compliant signals.
( Would 802.11ac recognize all 801.11ax ??? Normally 802.11 is backward compatible.)
Does Snooper (with "Receive errors " allowed) reveal any MAC address?
 
n21roadie
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Re: Reduced noise floor

Fri Nov 20, 2020 3:13 pm

I just left the frequency usage running for a hour and so far 20 frequencies are reading a noise floor of -60, I am just wondering if this noise floor is from onsite AP's or PtP's or both?
The list of -60 noise floor frequencies varies from 2 to 6 and max of 8 at any given time!
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bpwl
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Re: Reduced noise floor

Sat Nov 21, 2020 12:29 am

Check with "Snooper" (that other tool besides Freq Usage) , and if used with "Multiple channels" and "Receive errors" enabled under "Settings", it might even show more 'sources' of the signal.
Does Snooper (with "Receive errors " allowed) reveal any MAC address?
 
n21roadie
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Re: Reduced noise floor

Tue Nov 24, 2020 1:30 pm

Tried scan with "Snooper" but didn't get any extra information!

I also did a scan from a CPE on the same mast pointing in the same direction and it did NOT pickup any noise-floor frequencies with -60 ?

My conclusion is that maybe one of the pigtails on the RouterBOARD R11e 5HacD 802.11ac is NOT seated properly but this will need to be taken down to be checked?

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