ODOT RWIS (Road Weather Information System)

[tweiss3]

I have a RWIS station just two miles from my house. I know this one is RF, not cellular, based on the antenna system. I searched the RR database, as well as the FCC's ULS by location/radius. I found the City's weather siren system, but can't find the ODOT weather system. How would I go about finding this information? Google pulls up articles and research papers on the effectiveness of using RWIS to predict and enhance the treatment plans according to the weather, but no real description of the system besides "RF reports every minute and has no cost to operate, cellular reports ever 5 minutes and costs approximately $60/month to operate)".

 

[radioscan]

What are you hoping to hear?

There are no voice transmissions on this type of system. It is data collected and sent. The data is most likely proprietary so unless there is software available to decode it, it is wouldn't be accessible by any hobbyists.

 

[tweiss3]

Its mostly extreme curiosity. I understand the data will likely be useless, but I'd like to try. Other than parking nearby with a TinySA and hope I can pick it up, other options to find out? I'm also interested in how its licensed, I'm sure there would have to be some FCC license associated, either by ODOT or the instrument/system provider.

I did find the system is collected by the system called Weather Sentry by DTM, but I can't find much more information at all.

 

[a388sig2]

You can try searching ODOT public bids for the equipment specs and see what frequency range the equipment operates in?

 

[radioscan]

Another way to approach it is get the lat/longitude coordinates of the tower and go to the https://fjallfoss.fcc.gov/General_Menu_Reports/ site and do a tight radius search, say 3 miles. It should list everything licensed to that tower.

 

[tweiss3]

You can try searching ODOT public bids for the equipment specs and see what frequency range the equipment operates in?

I think I found the information I was looking for. The recent sensor systems indicate 915MHz, but I don't see any details if that's just the pavement sensor to station, or the station reporting frequency as well.

Another way to approach it is get the lat/longitude coordinates of the tower and go to the https://fjallfoss.fcc.gov/General_Menu_Reports/ site and do a tight radius search, say 3 miles. It should list everything licensed to that tower.

I used that, and came up dry.

 

[au1344]

ODOT RWIS sensors are hardwired for the most part. Anything that is wireless uses a proprietary data stream.