- Allstar-Digital - lists.keekles.org

A new Pi
by Mike Zingman 27 Nov '15

27 Nov '15

http://techcrunch.com/2015/11/26/raspberry-pi-zero/?ncid=rss

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DMRGateway repository
by Steve Zingman 27 Nov '15

27 Nov '15

We have started posting the code needed to create the IPSC to AllStar gateway. The 2 repositories that we will use are: DMRlink <https://github.com/N4IRS/DMRlink> This is forked from the original author Cort N0MJS so that we can track the changes needed. If you are going to create and maintain a gateway, you will need to learn and understand DMRlink. It's written in python and runs fine on a RPi. DMRlink is the connection to the IPSC network. The changes are in ambe_audio.py. It has been modified to send the frames out via UDP. There is a added configuration file and a updated subscriber ID .csv file One of the sample programs you want to look at is playback.py This is the code used to create the echo or parrot TG for listening to your own DMR audio. DMRGateway <https://github.com/N4IRS/DMRGateway> This is the code used to get the AMBE frames from DMRlink via UDP format them and send to the DV3000 via UDP. The returned PCM (analog) is sent via UDP to the asterisk USRP channel driver. The code will be posted as it's cleaned up and prepared for human consumption. ;) Our next step is to build the analog to DMR path. DMRlink provides all the pieces needed to do this. 73, Steve N4IRS and Mike N4IRR -- "Anything is possible if you don't know what you are talking about." 1st Law of Logic

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DV4mini vs DV3000
by Michael Hebert 26 Nov '15

26 Nov '15

What are the pros and cons DV4mini vs DV3000? Michael KD5DFB

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DMRGateway BiDirectional
by Steve Zingman 25 Nov '15

25 Nov '15

Right now we have audio in one direction, from IPSC to AllStar. The program still needs some work to make it easier to use. There will be a configuration file to control what Talk Groups, Time Slices and destination IP to send the PCM data to. There is no modification needed to AllStar. We are using the the stock USRP channel driver available in AllStar. We have the code to send audio from AllStar to IPSC using the same driver. Once we complete initial testing, we will make it available for people to test. The big thing to start is KEEP IT OFF DMR-MARC. Test it on a private network or on you local talk group. We still have a LOT of work to do. Right now, this is a proof of concept. 73, Steve N4IRS and Mike N4IRR -- "Anything is possible if you don't know what you are talking about." 1st Law of Logic

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DMRGateway
by Steve Zingman 25 Nov '15

25 Nov '15

With technology gleaned from: DMRlink (N0MJS) NW Digital Radio Digital Voice Systems, Inc. Jonathan Naylor (G4KLX) DSD (Anonymous) Google N4IRR and N4IRS (INAD) would like to announce the first in a series of digital <---> analog Gateways. As a proof of concept, Virtual Hub Node 2100 is hosting the DMR-MARC to Allstar Gateway. This is a receive only Gateway bridging DMR-MARC. DCI and DMR+ to AllStar. This proof of concept is using no Motorola software or hardware. This is running on a Raspberry Pi2 Later versions of the Gateway will allow 2 way communications with Digital networks. 73, Steve N4IRS and Mike N4IRR AllStar Digital Discussion at: <http://lists.keekles.org/cgi-bin/mailman/listinfo/allstar-digital> All welcome. -- "Anything is possible if you don't know what you are talking about." 1st Law of Logic

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DMRGateway
by Steve Zingman 25 Nov '15

25 Nov '15

Sorry, there was a problem with a user repeater locking up the hub. We are back up. Steve -- "Anything is possible if you don't know what you are talking about." 1st Law of Logic

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DMRGateway Talk Groups and Networks.
by Steve Zingman 25 Nov '15

25 Nov '15

DMR-MARC: Time Slot #1 - Group Call 1 = World Wide (PTT activated with 5 min inactivity timeout) Time Slot #1 - Group Call 13 = WW English Time Slot #1 - Group Call 3 = North America Time Slot #1 - Group Call 310 = TAC 310 (PTT) Time Slot #2 - Group Call 2 = Local Time Slot #2 - Group Call 3112- Florida Statewide Time Slot #2 - Group Call 3174- Southeast Regional DCI: Time Slot #1 - Group Call 3160 DCI 1 Time Slot #1 - Group Call 3777215 DCI Comm 1 Time Slot #2 - Group Call 3100 = DCI Bridge 2 DMRPlus: Time Slot #2 - Group Call 9 = DMRPlus reflectors 73, Steve N4IRS and Mike N4IRR This is the last post on app_rpt. all further discussion will be on: AllStar Digital Discussion at: <http://lists.keekles.org/cgi-bin/mailman/listinfo/allstar-digital> All welcome. -- "Anything is possible if you don't know what you are talking about." 1st Law of Logic

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System Fusion
by Matthew Pitts 23 Nov '15

23 Nov '15

Some preliminary bumps in support; we probably will have to interface to the HRI-200, since it appears that at least one of the digital voice sub-modes is not supported by the DV3000 without writing code to modify the AMBE data stream before feeding it into the DV3000. We can probably use the HRI-200 in the same way as we would a DMK URI, but we need to figure out how to get it to switch between analog and digital to be able to have it be functional. Matthew Pitts N8OHU -- Sent from my Moto X with K-9 Mail. Please excuse my brevity.

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P25 over Allstar via Quantar repeaters
by Bryan Fields 16 Nov '15

16 Nov '15

I've been discussing what's know as Quantar Site Connect (QSC) with the person running that project. Unfortunately it's closed source and he's unwilling to share with others, so it has me thinking of how to interface it with asterisk. The v.24 interface from the Quantar repeater is basically 9600 bps serial, and is not encrypted at all. This gives access to the raw IMBE frames, and I suspect it would be easy to get this into asterisk (heck a usb serial adapter would work). There are some docs on it up here. http://vk2lk.com/wiki/index.php/Understanding_the_Motorola_Quantar_V.24_int… and there is the referenced thread on p25.ca We'd be able to setup a talkgroup to Allstar node ID scheme and by changing the talkgroup of your subscriber radio you could talk to different nodes. Just a thought, or we could ignore that all together. A RPi2 with a serial dongle and a audio interface could link digital and analog communications from the same system. Vocode it to PCM and send it out as IAX2 trunk traffic. Thoughts? -- Bryan Fields 727-409-1194 - Voice 727-214-2508 - Fax http://bryanfields.net

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DMR and dv3000
by Robert Newberry 11 Nov '15

11 Nov '15

I'm trying my best to understand this. It's my understanding that maybe using a mototrbo repeater and feeding the digital data steam into a DV3000 we should get a ulaw or pcm or something in analog out the other side right? Is my simplistic understanding of this right? I have a xpr8300 sitting on a shelf I can experiment with? I'm guessing there is a big gotcha here I'm missing like my simple understanding is not so easily done. N1XBM Apparare Scientor Paratus Communicare Allstar Node # 27086, 41540, 41812, 42086

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