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NXDN and dPMR compatibility

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n9upc

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I am just checking to see if anyone knows if the NXDN digital format is compatible with the dPMR format that a lot of the chinese HT's are starting to use? I know that the chinese ones are NOT C and D type trunking capable and this is more aimed at the conventional form of communication.

While the chinese ones are cheap, in some cases sub $100, I still do not want to drop my money on something that does not work with the current radios. I have tried to do research to see what standard these chinese ones use but even if they say the same I am a man who prefers tested proof in concept.

Please note I also asked this in the Icom forum due to having a similar product .
 

jhampton2000

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Unfortunately not.

NXDN and dPMR are different formats and in most cases use different codecs: AMBE2+ for those that follow the NXDN format, but most of the cheap Chinese dPMR models use a different one (it's called something like AMBE2+(a) or something like that, but its simply not compatible with AMBE2+ and NXDN).

And you need to be careful about Icom radios: some IDAS branded radios are actually NXDN compatible and some IDAS radios are dPMR which aren't compatible with NXDN, even though they do use AMBE2+ codecs. It's super confusing, which is another reason I keep away from Icom.
 

SAFFA

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Some chinese radios claiming to be DPMR are also not DPMR compatible. Case in reference I got some sample kirisun radios which the distributor said are DPMR, I then took my Kenwood NX-320 and flashed it with the DPMR licence and firmware and programmed the DPMR channels into it, but could not for the life of me get it to talk to the Kirisun.

It turns out that the kirisun is not using the DPMR protocol but there own proprietary protocol called "Kipro", hence the fact it didn't work with the Kenwood DPMR.

The word "Dpmr" seems to be a generic term in china for a digital radio operating on 6.25khz, but does not necessarily mean in complies with the DPMR protocol or standard.
 

ScanWI

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Unfortunately not.

And you need to be careful about Icom radios: some IDAS branded radios are actually NXDN compatible and some IDAS radios are dPMR which aren't compatible with NXDN, even though they do use AMBE2+ codecs. It's super confusing, which is another reason I keep away from Icom.

This is not a model issue, it is a programming issue. You can chose which mode you want the radio to use globally. The radio can only do one or the other. You cannot program the radio with both modes in them at the same time.
 

SAFFA

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As far as i know Icom make the radio either DPMR or NXDN, and they are clearly marked. You can't change a Icom dmpr to NXDN and vice versa
 

ScanWI

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As far as i know Icom make the radio either DPMR or NXDN, and they are clearly marked. You can't change a Icom dmpr to NXDN and vice versa
Again it is in the software, been there done that, tested it, tried it, etc...

They may have dPMR only radios in other countries but the US versions can do either, by changing the model type.
 
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lmrtek

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I was impressed By the audio quality of the ICOM IDAS nxdn system

Its the first digital audio I found I could tolerate
 
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