RF scan in San Francisco

My fancy Ubiquiti access point has an RF scan tool. Here’s what it found in my house in San Francisco, Noe Valley.

Capture.PNG

Capture2.PNG

 

Not a great visualization; the yellow bar fills up the trapezoid. Mouseover tells me the 2.4GHz channels are about 20-30% “utilized” with “interference” of -95 dBm (noise floor?). 5.0GHz channels are mostly 0% utilized except for 112 and 136, which are about 20%. Interference there is -91 dBm for most, -96 for a couple.

My iPhone sitting nearby can see about 4 neighbor’s WiFi networks. Also probably a lot of 2.4GHz cordless phones, including mine. In practice 2.4GHz barely works through the house and 5.0GHz is terribly unreliable, probably because the walls are lath and plaster faraday cages.

 

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s