What am I hearing? Telemetry System?

[KJ6YZE]

Hello,

While searching for control channels with my scanners, I came across some data bursts in the 857-860 MHz range. A search of the DB brings me to Mid Valley Communications WZZ904, a trunked system in Stanislaus county. I believe that is what I'm listening to because the frequencies I have logged match but all the talk groups I'm logging are data bursts.

I was curious to know if anyone knows what kind of data format is being used, PSK, MSK, some format I've likely never heard of, and how I could decode them if possible.

Also like to submit new IDs that I have logged that are not in the database at this time.

16960
16976
16992
17984
18000
49680
49696
49712
49728
49744
49776 (Most active with over 300 hits in a 2 hour window)
49808
49920

Thanks

 

[kma371]

I hear the same bursts but have no idea what they are either.

If you have new talkgroups to submit, please be sure you have identified them somehow/someway as we cannot enter unknowns. If you can determine some kind of general use like farming or transportation trucks , that works too.

 

[KJ6YZE]

Thanks for the reply KMA371,

All the talkgroups I have logged sound like a computer signal. Wish I could decode them and get some idea on what they are. Ill keep working on it if work ever lets up. To busy right now.