IDAS decoding

[grosminet]

What is the exact status of IDAS decoding ?

I tried with DSD 1.074 , nothing . I tried with winDSDV2 from EricCottrell . I have 2 poor frames on an heavy local signal .

French red cross went to IDAS nationwide

 

[racingfan360]

Have you tried DSD+ with the -fm option set? It should decode voice and data frames (no vocoder so no voice audio) on IDAS dpmr?

IDAS NXDN should decode ok on DSD+.

Maybe DSDAuthor could update on the possibility of adding the IDAS dpmr vocoder on a future Fastlane version???

 

[grosminet]

IDAS

How to make difference between IDAS ?

Is IDAS /dPMR same as dPMR and decode with dPMR TX/RX(if we can reteive digital settings )?

IDAS /nxdn 4800 exists ?

Yesterday It was a very strong signal , I tried DSD 1.074 with -fm settings : no result
I tried Windsd V2 from Eric and I had 2 poor frames display IDAS format

Can someone can explain IDAS state of art

 

[EricCottrell]

Hello,

The press release from Icom mentions pDMR. Icom may call all their digital radios IDAS, but current decoders only decode Icom NXDN, both conventional and "Type-D" trunking.

I thought pDMR was only used for the Digital PMR446 service, but I just noticed ETSI TS 102 658 that defines a commercial version. There was an update to the specifications in July. It does not look too difficult to add decoding.

The vocoder looks the same as NXDN Half-Rate. It is the signalling bits that are different. I am not aware of any pDMR systems where the developers live, so recordings will be needed to start adding support.

73 Eric

 

[EricCottrell]

Hello,

IDAS is an ICOM marketing term. If they say the radio is dPMR, then it should follow the dPMR standard. Their NXDN radios follow the NXDN standard.

73 Eric

 

[racingfan360]

Hi Eric,

Here are 4 (not perfect) samples of Icom dPMR:

Zippyshare.com - raw1.wav
Zippyshare.com - raw2.wav
Zippyshare.com - raw3.wav
Zippyshare.com - raw4.wav

These are from a commercial IDAS system on non-446MHz freqs and decode as dPMR. The really unusual thing is they should be outputs from a repeater (I know, I've read the spec too, and I thought dPMR Mode 1 could only be point to point, so maybe the user is running a cross-band repeater ????)

 

[DaveNF2G]

So will the internal nomenclature be changed in DSD+, because I am tracking a large "IDAS" system in my area and that's what DSD+ says it is.

 

[nd5y]

dPMR can have different vocoders. See dPMR Interoperability & Why do we need IOP testing?

 

[racingfan360]

Hello,
The vocoder looks the same as NXDN Half-Rate. It is the signalling bits that are different. I am not aware of any pDMR systems where the developers live, so recordings will be needed to start adding support.

Eric I can provide further raw recordings now if it helps with this project. Just let me know.

Jim

 

[FR3500]

Me too...

 

[grosminet]

French red cross

That is the reason of my IDAS question

French Red Cross choose dPMR (digital Private Mobile Radio) - News Archive : Icom UK - two way radio transceivers, receivers and navigation products

 

[usafeedman]

I can also provide raw recordings of dPMR signals for developers if needed. There are a lot of them in my area actually. Dpmr voice should definitely be included in a future release of DSDPlus Fast Lane .

 

[FR3500]

The protocol is supposed to be availablle on AR-DV1
Does anybody knows which dPMR exactly ? as there are several modes, codecs...
The documentation and sheet are not very clear about the subject

And would a programmable radio be able to hear all dPmR systems, provided they re not enrypted ?
And what about Idas ? i was told it was not all the same, however when i look for " idas dpmr" it leads me to Icom sites; so for me Idas is simply icom's dpmr version;
Given that dpmr is open and can be manufactured by any radio company ...

 

[grosminet]

dPMR and TYT DM-UVF10 dPMR Radio Dual Band

dPMR and TYT DM-UVF10 dPMR Radio Dual Band

I tried dPMR decode with fast lane DSD last version using my dPMR TYT DM-UVF10 dPMR Radio Dual Band . It sound similar as the IDAS network i heard last week near home .
DSD is displaying :
+dPMR voice
+dPMR voice
+dPMR voice

I don't know if I can have sound output because I was doing tests my my own TX but I don't think so.

What should be include in future release is like DMR (Mototrbo) :
- type of call (individual, group, general)
- Ident of group , caller ...