155.010 dmr

Does anyone know of any agency using DMR (MotoTRBO) on 155.010?

I can't copy it well enough to decode, but when the band is up, I pull that in here in extreme NW Iowa (Rock Rapids).

I don't think it's from another state, but I can't be sure. I know it's DMR because my RTLSDR and DSD+ are able to decode some data, but no voice.

I'm thinking it could be Emmet County, but the RR database says they're P25, not DMR.

The thought crosses my mind that perhaps it's ONLY data -- and that's why I'm not getting any voice . . .

It's strong here in Sioux City. Pretty sure it's data only. Drives me nuts.

Post a screenshot of when its receiving data.

Tim

@timkilbride -- It's been a while now since I've heard it but if I do I'll fire up my RTLSDR again. You were wanting a screenshot of the data screen?

Like this? (this is an example, not the real thing)

@tfhphoto -- If it's strong in Sioux City I wonder if it's Woodbury County or SC PD? Like 20 years ago, they used to use 155.010 as their "OPS" channel. (every county in Iowa had an "OPS" and an "INFO", and they were re-used throughout the state. 155.010 was a common one.

I see SC still has a number of licenses for 155.010. Do you know if they use it for any other purpose? Could it be their MDT (mobile data terminals) use it?

SIOUX CITY, CITY OF KSS328 155.01000 2012-03-06 A 105 0 MO PW SALIX
SIOUX CITY, CITY OF KSS328 155.01000 2012-03-06 A 1 0 FB PW CLIMBING HILL
SIOUX CITY, CITY OF KSS328 155.01000 2012-03-06 A 1 0 FB PW SIOUX CITY
SIOUX CITY, CITY OF KSS328 155.01000 2012-03-06 A 1 0 FB PW SALIX
SIOUX CITY, CITY OF KSS328 155.01000 2012-03-06 A 105 0 MO PW
SIOUX CITY, CITY OF KSS328 155.01000 2012-03-06 A 105 0 MO PW MOVILLE
SIOUX CITY, CITY OF KSS328 155.01000 2012-03-06 A 105 0 MO PW DANBURY
SIOUX CITY, CITY OF KSS328 155.01000 2012-03-06 A 1 0 FB PW
SIOUX CITY, CITY OF KSS328 155.01000 2012-03-06 A 1 0 FB PW MOVILLE
SIOUX CITY, CITY OF KSS328 155.01000 2012-03-06 A 1 0 FB PW DANBURY
SIOUX CITY, CITY OF KSS328 155.01000 2012-03-06 A 105 0 MO PW CLIMBING HILL
SIOUX CITY, CITY OF KSS328 155.01000 2012-03-06 A 105 0 MO PW SIOUX CITY

That looks like the data that is sent during the site beacon every 60 seconds. Does the transmission last roughly 4 seconds each time?

Tim

Like I said, the screenshot was an EXAMPLE -- NOT THE ACTUAL SCREEN -- I was asking if that was the screen for which you wanted a screenshot.

I do not HAVE a screenshot of the actual transmission, as I haven't heard it in a while. Not sure if @tftphoto has DSD+, but he says it comes in better there. If he does, maybe he could post a screenshot of his DSD+ screen . . .

Possible DGPS correction data?

@timkilbride -- DX is coming in again. I now have a screenshot of my DSD+ window on the 155.010 frequency.

What is DGPS?

radioboy75 said:

@timkilbride -- DX is coming in again. I now have a screenshot of my DSD+ window on the 155.010 frequency.

Click to expand...

That doesn't look like it is decoding very well. When these transmissions occur, time how long between transmission and the duration of the transmission.

Tim

@timkilbride -- Not very long. A few seconds between transmissions, maybe. Similar to a conversation.

The transmissions are generally 5-10 seconds I would think.

@tftphoto -- is that what you're hearing as well?

Could it be Capacity Plus? TT

Don't know too much about Capacity Plus. I was under the impression that you could monitor those. Is that wrong?

Yes, that sounds like what I'm hearing. Not using DSD+, but I'm assuming its GPS or other data, mostly 10 seconds on then 10 seconds or so off. Does not decode - or even show a CC - as dmr on my 996P2s, but it sounds like dmr. Also, in 21 years in SUX, I don't recall ever hearing (locally) voice on 155.010 despite all the local licenses.

Looking at the emission designators for Iowa licenses, Boone County is on Nexedge (NXDN), Decatur County is on MotoTRBO, and most everyone else is listed as being on analog with maybe 2-3 also listing P25 Phase I.