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Digital Voice Formats Discussions regarding different digital radio voice formats, including AMBE, IMBE, VSELP, GSM, CELP, MELP, and others.

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Old 08-25-2013, 11:41 PM
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Default ZASTONE ZT-9908

I just picked up two of these for a steal, all I know is that they're some flavor of DPMR. Anyone have any ideas what they might work with?

http://www.zastone.com/EN/Upload/201...%20ZT-9908.pdf
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Old 08-29-2013, 11:20 PM
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IDAS/NXDN
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Old 09-16-2013, 9:38 AM
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Quote:
Originally Posted by Drachen_Fire View Post
IDAS/NXDN
I am trying to monitor a Kenwood NXDN system. Will this work for it?
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Old 09-16-2013, 9:23 PM
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Depends on the system.

The attachment shows 6.25KHz. I can't confirm it's NXDN or not, so I'm going off what Drachen says. Kenwood NXDN systems (NexEdge) can use 6.25KHz -OR- 12.5KHz. If the system is running in 12.5KHz NXDN mode, it won't work.

Also, if it is a trunked system, it may not decode it. The Kenwood NexEdge trunking systems send out a bit in the packet that tags it as a trunked system. A Kenwood NexEdge radio running in conventional digital mode will not unsquelch for a trunked system, even if you set the RAN to 0. It would be worth trying, though.
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Old 09-18-2013, 11:56 AM
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I considered getting a pair to test, and downloaded the software. There doesn't appear to be a way to program trunking, and the only operating mode in digital appears to be 6.25. That means compatible with IDAS and 6.25 NXDN. I don't think it will work with 12.5 NXDN.
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Old 09-23-2013, 10:37 AM
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Quote:
Originally Posted by Drachen_Fire View Post
I considered getting a pair to test, and downloaded the software. There doesn't appear to be a way to program trunking, and the only operating mode in digital appears to be 6.25. That means compatible with IDAS and 6.25 NXDN. I don't think it will work with 12.5 NXDN.
My only concern is there does not appear to be a section to program the RAN codes. Has anyone else been able to locate this in the software?

Also, if digital only operates in 6.25 khz mode... is there a frequency I can use license free to test? I don't think any license free frequencies have gone 6.25 khz to my knowledge.

Last edited by gotdigital; 09-23-2013 at 10:45 AM..
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Old 09-23-2013, 11:40 AM
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Default ZASTONE ZT-9908

DPMR = MotoTRBO, I believe...not iDAS or NXDN.
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Old 09-23-2013, 11:18 PM
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DPMR = Digital Private Mobile Radio (a Common Air Interface protocol)
DMR = Digital Mobile Radio (a Common Air Interface protocol)
FDMA = Frequency Domain Multiple Access (a Channel Access Method)
TDMA = Time Domain Multiple Access (a Channel Access Method)

FDMA provides one 'communications path (voice or data)' per frequency/signal. Analog FM is an example of FDMA. So it P25 Phase 1. Thus, FDMA is uses with analog and digital systems.

TDMA is mulitple 'communications paths (voice or data)' per frequency/signal. DMR uses two-time-slot TDMA, to get two 'talk paths' per frequency/signal.

The DPMR protocol uses FDMA at 6.25 khz spacing.

MOTOTRBO uses the DMR protocol, which is TDMA at 12.5 khz spacing.

John Rayfield, Jr. CETma
W0PM

Quote:
Originally Posted by nbarco View Post
DPMR = MotoTRBO, I believe...not iDAS or NXDN.
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Old 09-25-2013, 12:24 AM
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The RAN accesses are under "Channel Code" on transmit and recieve. It is selectable 0-63. There are 64 RAN codes. I think this is how you do it.
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Old 09-25-2013, 12:30 PM
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Quote:
Originally Posted by Drachen_Fire View Post
The RAN accesses are under "Channel Code" on transmit and recieve. It is selectable 0-63. There are 64 RAN codes. I think this is how you do it.
Thanks, however I can't seem to find that in the programming software. Are we speaking about the Zastone? All I see an option for is TX and RX and the only options are DPL and PL. Do I go to a different options screen? Thanks!
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Old 09-26-2013, 12:14 AM
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Yes. Leave the TX/RX PL codes to "None". Go to menu option "dpmr" and set up your digital system, including your RAN codes. Then go back to the main screen and set channel type to "digital". Note that you can have PL codes and RAN codes concurrently, and there is an option for "mixed".
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Old 09-26-2013, 9:40 AM
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Quote:
Originally Posted by Drachen_Fire View Post
Yes. Leave the TX/RX PL codes to "None". Go to menu option "dpmr" and set up your digital system, including your RAN codes. Then go back to the main screen and set channel type to "digital". Note that you can have PL codes and RAN codes concurrently, and there is an option for "mixed".
Ahhh, I found it. It's listed as "RX/TX color"
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Old 09-27-2013, 11:18 PM
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So is it confirmed that this radio is compatible with NXDN and iDAS?
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Old 10-06-2013, 2:23 PM
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I am curious as well if these are compatible with Icom IDAS radios /repeaters.
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Old 10-12-2013, 2:56 PM
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Default Zastone ZT-9908 = Luiton DG-9908

So I already owned a pair of Luiton DG-9908's purchased on Alibaba from Bond Telecom. It took a good 3-4 weeks to get them but i'm happy with them. I just saw these Zastone ZT-9908's yesterday and they look identical. So taking a leap of faith I used the ZT-9908 software to read/write to the DG-9908's since the DG-9908's don't have software posted on the manufacturers website... Success! Looks like the same radio, just re-branded.

I programmed in a local NXDN repeater but I can't get it to key up. I'm trying the 444.750+ (RAN 1) in Milwaukee. I'd love to use these on a repeater if possible. Anyone have suggestions / ideas? I tried narrow and wideband. Read the info from the radio after writing to verify.

-Ryan KC9GMY
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Old 10-12-2013, 5:51 PM
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Quote:
Originally Posted by rjschilder View Post
So I already owned a pair of Luiton DG-9908's purchased on Alibaba from Bond Telecom. It took a good 3-4 weeks to get them but i'm happy with them. I just saw these Zastone ZT-9908's yesterday and they look identical. So taking a leap of faith I used the ZT-9908 software to read/write to the DG-9908's since the DG-9908's don't have software posted on the manufacturers website... Success! Looks like the same radio, just re-branded.

I programmed in a local NXDN repeater but I can't get it to key up. I'm trying the 444.750+ (RAN 1) in Milwaukee. I'd love to use these on a repeater if possible. Anyone have suggestions / ideas? I tried narrow and wideband. Read the info from the radio after writing to verify.

-Ryan KC9GMY
So after about 10 minutes of further research I noticed NXDN and DPMR are not compatible. Oh well.

-KC9GMY
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Old 10-12-2013, 9:21 PM
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Thats kind if dissappointing, oh well
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Old 10-19-2013, 9:46 AM
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Can anyone help me the zt-9908 software keeps crashing telling me unsupported operation
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Old 10-26-2013, 2:53 AM
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Default SMS, anyone?

Hi folks, I've been messing around with pair of Zastones for few days. After few iteration rounds I finally managed to get a qso between them. For some odd reason, I can't receive SMS. The radio transmits, but other end does not receive the message. Any bright ideas?


The PC software is one messy piece of ****, and lack of documentation doesn't really help... Would someone please put a working config file to web?

- Jukka, oh6mwq
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Old 10-26-2013, 2:54 AM
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Quote:
Originally Posted by crash1 View Post
Can anyone help me the zt-9908 software keeps crashing telling me unsupported operation
Got the same problem with XP, but it seems to work ok with Win7. I didn't really study what was wrong, just jumped to next PC.
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