is there such thing as dstar2dmr and/or dstar2ysf?

Help with D-Star related issues
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KB1BDM
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is there such thing as dstar2dmr and/or dstar2ysf?

Post by KB1BDM » Fri Oct 25, 2019 9:50 pm

Hi, can a dstar radio be used to access DMR talkgroups and/or YSF networks the same way a DMR radio can be used to talk on YSF/FCS rooms etc? I have the latest pistar version running a mmdvdm STM32 modem board. Thanks

- KB1BDM

M1DNS
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Re: is there such thing as dstar2dmr and/or dstar2ysf?

Post by M1DNS » Sat Oct 26, 2019 9:57 am

No, differing codecs between dstar and anything else.
YSF, DMR, nxdn follow a very similar codec making it possible.

There are certain TG's / groups / reflectors that can handle Dstar2
other modes, but that's where other hardware / software runs on
those particular assetts to make it work that way.

Have a look at XLX reflectors and DV switch.group.io
There's also a quadnet multi-flector as well, that you might
want to checkout. but agn these are only linked to specific TG's
and not a general Dstar2???

Andrew M1DNS, (Mod)


Andrew M1DNS.
Pi-star Admin Team.

KB1BDM
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Re: is there such thing as dstar2dmr and/or dstar2ysf?

Post by KB1BDM » Sun Oct 27, 2019 2:23 pm

Hey thanks for getting back to me. Ok, that makes sense. And on those reflectors that DO offer cross-platform functionality, im guessing the audio has to be decoded and then reencoded (compressed) into the other format resulting in some loss of quality?

- Todd (KB1BDM)

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KE0FHS
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Re: is there such thing as dstar2dmr and/or dstar2ysf?

Post by KE0FHS » Sun Oct 27, 2019 3:17 pm

I link to the net run by the Colorado Digital Multiprotocol team (http://coloradodigital.net/) quite often. From what I understand, they use the AMBE Server made by Guus (DVMEGA). Usually sounds really good to me.
73, Toshen, KE0FHS
Playing with Pi-Star (unofficial notes about setting up and using Pi-Star):
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M1DNS
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Re: is there such thing as dstar2dmr and/or dstar2ysf?

Post by M1DNS » Sun Oct 27, 2019 7:51 pm

XLX usually uses two ambe vocoder chips dstar is ingested passed to the 2nd encoder to come out as DMR. Although it's encoded /re_encoded the path stays 1s and 0s. Some of the other options use a DtoA and AtoD conversion using software encoders. Where the dstar get converted to analogue that analogue signal then gets converted back to digital.
If everything is configured correctly, many times you won't notice the difference between the two differing methods.
We ran a test echo link bridge on our local TG for a while and many users rarely noticed any audio differences.

Andrew M1DNS, (Mod)

Andrew M1DNS.
Pi-star Admin Team.

ct1dvm
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Re: is there such thing as dstar2dmr and/or dstar2ysf?

Post by ct1dvm » Mon Oct 28, 2019 6:29 am

KE0FHS wrote:
Sun Oct 27, 2019 3:17 pm
I link to the net run by the Colorado Digital Multiprotocol team (http://coloradodigital.net/) quite often. From what I understand, they use the AMBE Server made by Guus (DVMEGA). Usually sounds really good to me.
They use the dvstick33 hardware by Guus, recommended to them.
The Ambed server is xlxd software, not dvmega.

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