Conv or DMR

[rocky28965]

In doing a license search on a frequency.
How can I tell if it's Conv or DMR?
In particular if it's DMR 1 Freq

 

[BC_Scan]

you will have to provide a link or example , the MODE will tell u the emissions designator , not sure if your site provides that info
you have not provided an example, help us to help u

7K60FXD	2-slot DMR (Motorola MOTOTRBO) TDMA data
7K60FXE	2-slot DMR (Motorola MOTOTRBO) TDMA voice

16K0F3E *

Frequency modulated (FM) analog voice, 4 kHz deviation (NPSPAC);

 

[Whiskey3JMC]

No way to tell for sure without listening/observing. Just because emissions designators appear on a license doesn't 100% guarantee the mode's use. No idea how New Zealand does things but in the USA you'll sometimes come across licenses with blanket designators which would cover numerous possible emissions (DMR, NXDN, analog voice) so yeah, listen & observe

 

[rocky28965]

Thanks for your input, guys.
I was hoping some of the NZ crew may chip in, as they would be more familiar with licensing search site.
What I'm up to is, looking for DMR One Frequency channels in my area.
There are several service providers, and I have searched for their frequency listing in my area.
The DMR T3 channels are easy enough to pick out on a SDR but not so the others.
Unless there is a transmission, they are not visible.
I've put all the possibles in a scan list and are monitoring them on Proscan History Logging.
Have found 8 so far and that may well be all there is.
None of them appear to be very busy.
I'll keep running the scan for a few more days.

 

[Z-master]

Deep diving into the RSM license can show these emissions.
10K0F3EJN - analog voice
7K60FXWDT - DMR.
Most licenses will have analog voice by default, I would put money on. A lot of people seem to have a license that covers both but still use analog, so there's no real way of telling...

 

[rocky28965]

That is the missing link, I thought it would be something like that.

There are some that show both those emissions.
Also, some with 8K40FXWDT which I know are DMR T3

 

[mbstone99]

That is the missing link, I thought it would be something like that.

There are some that show both those emissions.
Also, some with 8K40FXWDT which I know are DMR T3

I believe the 8K and subsequently 4K are usually NexEdge (NXDN).. not sure if you use something different for T3 but here it's still listed as 7K (DMR).

Matt

 

[rocky28965]

I haven't found any 4K ones yet.
Of the 17 DMR and DT3 channels I have found with my SDS200e.
Looking them up on the NZ Search License site.

The majority of the DMR Single Frequency channels have 7K60FXWDT
There are others that have both 7K60FXWDT and 10K0F3EJN
There is one with both 8K40FXWDT and 10K0F3EJN
There is another with 7K60FXEDT

The majority of the DT3/MotoTRBO channels have 8K40FXWDT
There is one with 7K60FXWDT
Two others have both 7K60FXWDT and 10K0F3EJN

So, a bit of a mixture.

 

[Z-master]

RSMs PIB38 will answer any questions you have.

 

[rocky28965]

I have been scanning a group of frequencies and monitoring them on Proscan.
There is one that shows up intermittently and has the hammer sound of DMR .
It doesn't show as DMR in the Digital Type column.
I am curious what it might be.
As far as I know there is only DMR One Frequency and DMR DT3 used in this area.
There are still a few MPT-1327 channels, but they have a different sound.

 

[Z-master]

what's the frequency/RSM channel?

 

[rocky28965]

I wasn't sure if that was allowed on here.

 

[Z-master]

If it's listed on RSM, it's considered public knowledge so there's no reason for it to be not allowed

 

[rocky28965]

164.100000, EE152, Ashley Communications, Site is Dunstan No3, Emission 10K0F3EJN

 

[Z-master]

The emission says it's analog, so if it is analog then the hammering may be some type of SCADA type of signal.. (go to All Identified Signals - Signal Identification Wiki and do a browser search on that page for SCADA and listen to the last 5 seconds for an example, if you haven't heard it before)

No telling who it is, given it's registered to Ashley Comms.. From my radio experience though (given the location of the repeater) to me it seems to be trying to cover maybe Alex and into Omakau areas. My knowledge of the area isn't great, but to me there'd be too much shadowing to get into Cromwell and especially the gorge although being VHF it might reflect off the hills near Obelisk to a half acceptable level so I'd say you're looking for a user in that area. You could rule out an electricity provider SCADA as they would register their own frequencies rather than renting through AshComms I'd have thought, same with council.

 

[rocky28965]

I had a listen to the SCADA sound file and it's nothing like that.
Definitely has the DMR hammer sound.

Just found another one 163.600000 which I know is DMR T3 but the SDS200e isn't decoding it or recognizing it as DMR.
This one is about 20k's from my location, whereas the other would be nearer 70k.

 

[Z-master]

OK.. if it's definitely DMR, then it could it be data/GPS bursts, and maybe the transmit isn't enough for the SDS to lock on to display as being DMR

 

[rocky28965]

These DMR One Frequency channels are certainly hard to find.
The MotoTRBO are easily found on a SDR.
Ubbe recons the SDS scanners will find DMR better on search than on scan.
So I'll setup a custom search to cover the range I'm looking at.
Just have to go through and lock out all the known ones first.
That will keep me busy for a day or two.