Help Decipher Signal

[oxygen69]

Hey Guys,
I was wondering if anyone might be able to help me identify the signal I am seeing coming from a rural water tower? It seems to be fairly scattered evenly across the 902-928 MHz range. However, I did see some shorter term activity at 923.3-927.1 MHz for the range of (0-5mins ) in the beginning of the recording.

I have attached thumbnails of the entire chanalyzer recording image, but I was only able to upload the first 16mins of a 60min wsr file. (file size limits) There is some Alvarion 5.8 BreezeAccessVL equipment being used at the water tower, but I don't know about 900MHz alvarion.

Does anyone have examples of Alvarion signals analysis and what is might look like? Either 5 GHz, 2.4 GHz or 900Mhz? From what I have seen, the 5.7GHz signals almost look like 802.11a signatures. They seem a little short of channel size tho and they are not positioned/centered on 802.11 channels. (A 5GHz thumbnail is also attached of a signal from the same water tower).

The spikes here are on a fairly regular basis and might possibly be utility info, but I would like people's feedback.

Thanks much!
Oxygen

[Howard Higgins]

The 5 GHz signal definitely looks like an OFDM something. But you are right, it's not centerd on a WLAN channel. Though it is close to CH 149.

[Karanwatson]

I want to share ayou tube link based on this . Check this out Deciphering the Signal.
www.youtube.com/watch?v=o_nBn2XSwEo




result it