The most common digital speech codec is apco p25, which dsd is able to decode. Home hotspot mmdvm hotspot spot radio station wifi digital voice modem p25. While this tutorial is aimed at the rtlsdr, other software radios such as the funcube dongle, airspy, hackrf and bladerf will also work. Up until recently it was possible to decode d star headers using either dsd 1. They assumed it should be in repeater mode and didnt have good results. Developer of software for dstar, dmr, system fusion, nxdn, p25, and pocsag. Can 1 duplex hotspot work with 2 different d star radios on different freq. One of the great things about hams is their ability to find solutions to almost any communications related problem.
Home board index software support dstar specific support. Zumspot usb stick for all the different dv digital voice modes in ham radio. Dstar stands for digital smart technologies for amateur radio. Mmdvm is an open source software project licensed under gpl v2, but with a note to say that it is. The mmdvm is a hardware and software component that can interface radios to a computer, like a raspberry pi, turning normal analog radios into digital radios, much like a tnc for packet radio. Color code, repeater slottime slot defaults 2 as radio mobile and wifi details software. Here is a video on the jumbospot running mmdvm pi star and how to set it up. These hotspots are flooding the market and they work just fine, as a cost effective way to get in to the hotspot scene. Although dstar and p25 are both digital protocols, dstar only complements. Jumbospot mmdvm dstardmrc4fmp25nxdn hotspot pistar. It is an open standard digital communication protocol established by jarl. Some information on dstar along with links to other dstar and digital voice sites. Multimode repeater dstar, dmr, p25 and c4fm australian. Can i use the dstar repeater without connecting to the internet.
I have no experience with dstar but ive heard complaints from other hams about d audio quality. All thats required for operation is a mini usb android phone s cablepower. After reading this document the reader should read other articles, books, and web pages to learn the finer points. Jan 10, 2008 poormans p25 dstar repeater using maxtracs this diagram on how to use two motorola maxtracs is from tim warth, aa2rs. By having the ability to add an open source firmware to the radio, hams would be able to completely redesign the operation of the radio, allowing for an improved user experience, support for multiple digital modes, such as dstar, p25, system fusion, the ability to turn it into a multimode digital scanner, plus much more. We also operate an fm analog repeater 220 band and a gmrs repeater. You must enter your callsign into the radios menu digitaltxrx page. Software to rxtx dstar, dmr, fusion ysf, nxdn, and p25. Mmdvm hotspot spot radio station wifi digital voice modem. Two of the modes could be done in software, p25 and dstar, as the patents that cover the voice coding are expired. So if alex in ny is listening on a 440 dstar repeater and i am on a 2m. C4fm, dstar, dmrplus, dpmr, p25 nxdn later via software updatevoice over lte and of course, fm. This software connects to dstar, fusion, nxdn, and p25 reflectors and gateways repeaters over udp.
This is perfect if you dont have the 3 grand to put up a dstar repeater or cant find a good deal on a motorola quantar for. Repeater slottime slot defaults 2 as radio mobile and wifi details software. Pistar is a software image built initially for the raspberry pi produced by the raspberry pi. If i only have a d radio, like my ic91ad, can i cross over to a dmr repeater, or any other modes. Mobile charger or a usb cable connected to your computer or laptop. Dstar, dmr and system fusion are the most wellknown, but the. I have no experience with d star but ive heard complaints from other hams about d audio quality. New dmr dstar fusion p25 nanospot wifi digital ham hotspot.
There is also the ability to map users positions using the dprs function of dstar. On both d star and system fusion, when you ask the repeater to connect to a different location, anyone that is listening on that repeater hears that you are there and can tell you have moved the repeater. We also operate an fm analog repeater 220 band and a. Mmdvm hotspot spot radio station wifi digital voice modem p25. Fully assembled and tested in a ruggedized aluminum enclosure. This software is intended to be run on stm32f103 microcontroller. In the d star world, this technology is called reflectors transmissions are reflected to all repeaters linked to the reflector, while dmr calls it talkgroups and system fusion calls it rooms.
This firmware supports dstar, dmr, system fusion, p25 and nxdn digital modes. Gateways are computer servers connected to repeaters that run software that enables them to. On the other hand, an amateur desiring to build a moderately priced p25 repeater could do so with a pair of appropriate commercial mobile radios and a p25 repeater controller. Regional programming file create and download a file to import into your programming software. I do have experience with kenwood nexedge, icom idas, p25 phase 1, and dmrmototrbo. This simple creation has put the power back into the hands of radio operators around the world allowing them to build and tinker with digital voice systems, breaking down the barrier.
The current gateway control software rsrp2c version g2, more commonly. All ive got to do if fit the whole lot into a kit box. Dstar or digital smart technologies for amateur radio is a frequency division multiple access fdma gaussian minimum shift keying gmsk digital voice and data protocol used in amateur radio. Pistar is digital voice software for hotspots and repeaters. How to make a mmdvm digital repeater n5amds digital.
This video should get you online in less than 10 mins. D star also has a new open routing system called quadnet smart groups, which bridges users together in a similar fashion. The new radio developed by hams as a dualband, multimode radio supporting fm, dmr, dstar and c4fm. Apr 30, 2017 my mmdvm multimode digital radio hotspot with screen working dmr and d star. Don trynor, va3xft january 20, 2016 connect systems, dstar, dmr, system fusion, tyt. I think eric put a lot of effort to make this video, and i give him a heap of credit. This usb still will operate through pistar or bluedv, so it is a bit more versatile with using multiple operating systems.
Decoding digital voice p25, dmr, nxdn, dstar with dsd the rtlsdr software defined radio combined with sdrsharp and a program called digital speech decoder dsd can be used as a radio scanner to easily and cheaply listen to. The barriers are the cost of software and firmware from motorola, the expense of the fru modules and the limited ability to repair at a component level. Mmdvm hotspot spot radio station wifi digital voice modem p25 dmr hotspot support ysf raspberry pie oled antenna. Practice social distancing, cover your cough, and wash your hands. The dv4mobile is another member of the successful family of dv4 products. Both can do everything pistar can dish out including yaesu system fusion ysf, dmr, dstar, p25, nxdn, pocsag paging, ysftodmr, ysftonxdn and ysftop25. The dv4mini comes without antenna with its software for connection with dcs, xrf and ref reflectors for dstar icom mode, as. Ambe audio quality was just as good as good imbe p25 if you ask me. Dstar for information about dstar voice and data repeaters, visit. Amateur radio notes about dstar, digital voice, and personal lowpower hotspots. Equipped with a 32bit microcontroller, a 70cm transceiver 420450mhz and a modulatordemodulator for gmsk and 4fsk modes. It uses a mmdvm zum pi board, controled by a raspberry pi running the latest pistar software. This is perfect if you dont have the 3 grand to put up a dstar repeater or cant find a good deal on a motorola quantar for p25. Many of the processes for installing a dstar repeater are exactly the same as an fm repeater, some are actually a lot easier.
It is similar in functionality to bluedv except not as pretty, and is compatible with all of the ambe3000 based usb devices out there thumbdv, dvstick 30, etc. Dstar wordt dmr pa3ang dutch ham radio station weblog. Free downloadable software for the ic80ad and the id880h is available here. Florida p25 amateur radio repeater database for ham repeaters in the us, canada, and mexico. Dstar uses gmsk encoding, different than the c4fm fdma designs of all but dmr which uses. Mmdvm multi mode digital hotspot for dmr, dstar,fusion and. The d star stands for digital smart technologies for amateur radio.
Jumbo spot rtq is a completely selfcontained digital hotspot supporting dmr, dstar, p25 and system fusion communications. In the next few weeks we will be commissioning our first multimode repeater. Aug 30, 2016 the barriers are the cost of software and firmware from motorola, the expense of the fru modules and the limited ability to repair at a component level. While this tutorial is aimed at the rtlsdr, other software radios. P25 is a suite of standards for digital radio communications. Apr 30, 2019 zumspot usb stick for all the different dv digital voice modes in ham radio.
Going from dstar or p25 to dmr or yaesu fusion would likely have to be done in hardware the ambe3000r is a good candidate as it can process multiple streams, or wait till 2022. Dstar is a digital voice and data protocol specification for amateur radio. Find specialized searches and information for p25equipped repeaters. Dstar p25, c4fm and dmr are supported on this new setup. The software helped to get the programming done, otherwise it would have. Mmdvm multi mode digital hotspot for dmr, dstar,fusion.
This multiplatform software suite that was devel oped for first. Icom with dstar and yaesu with its system fusion are the only manufacturers making equipment specifically for hams. Drats is a dstar communications tool that supports text chat, tcpip forwarding, file transfers, and can act as an email gateway. But, do i really have to buy a dmr, a d, fusion or p25 radio in order to work through this nanospot gizmo. Maar daarin wijkt dstar dus weer niet af van dmr of p25 v1 of v2. Manual jumbo spot rtq mini mmdvm hotspot dmr radio. My mmdvm multimode digital radio hotspot with screen working dmr and dstar. Note that this is a north american standard and a few other places, europe has a similar but imcompatible standard called tetra.
Discussion in amateur radio news started by kj4yzi, dec 15, 2017. Dsd is also capable of decoding other common digital codecs such as dmrmototrbo, nxdn, dstar and provoice. Dstar calculator calculate what to put in your, rpt1, rpt2 fields for linking, etc. Manual jumbo spot rtq mini mmdvm hotspot dmr radio station wifi. The mmdvmrepeater board is a lot like a hotspot, except it doesnt have a radio built onboard. Here is a video on the jumbospot running mmdvm pistar and how to set it up. On both dstar and system fusion, when you ask the repeater to connect to a different location, anyone that is listening on that repeater hears that you are there and can tell you have moved the repeater. Jan 20, 2016 by having the ability to add an open source firmware to the radio, hams would be able to completely redesign the operation of the radio, allowing for an improved user experience, support for multiple digital modes, such as d star, p25, system fusion, the ability to turn it into a multimode digital scanner, plus much more. The p25 network exchange p25nx was designed to bring this mode into the fold and unite pioneering amateurs across the world. As well as first open source gmsk node adapter repeater hotspot software. Supports pistars web based digital voice dashboard and configuration tool supports all four digital amateur modes dmr, dstar, p25 and system fusion builtin wifi. The goal of this document is to give the reader just enough information to get started operating a d star capable icom radio on a local internetconnected d star repeater. P25 p25 and dmr users can register for a dmrmarc radio id in order to.
Star, and ysf, as well as p25, nxdn, pocsag, and multiple. Take a look at the video below, and see this link at hro for purchase. Decoding digital voice p25, dmr, nxdn, dstar with dsd the rtlsdr software defined radio combined with sdrsharp and a program called digital speech decoder dsd can be used as a radio scanner to easily and cheaply listen to unencrypted digital radio voice conversations. Feb 25, 2019 i understand the benefits of a duplex hotspot for dmr but are their benefits for d star or fusion. Echolink for information, station listings and software downloads, visit.
The following charts can help you compare the entire d star product line based on features and specifications. You can also communicate with other dstar radios directly. The tytera tyt md380, a chinese made dmr portable radio. The system was developed in the late 1990s by the japan amateur radio league and uses minimumshift keying in its packetbased standard. Dec 15, 2017 pistar digital voice software preloaded and easily upgraded via software. Maybe work both d star and fusion simultaneously on different freq. Its very local right now, but owner james, ve1jcs, is working on a new antenna. Uhf vhf mmdvm hotspot support p25 dmr ysf dstar for.
Dstar yeasu system fusion ysf p25 the new v3 board adds nxdn to the protocol list. New dmr dstar fusion p25 nanospot wifi digital ham. Yes, you can use a dstar repeaters a local repeater. D star or digital smart technologies for amateur radio is a frequency division multiple access fdma gaussian minimum shift keying gmsk digital voice and data protocol used in amateur radio. Can 1 duplex hotspot work with 2 different dstar radios on different freq. At this time, scrn does not have digital p25 capability, only 21 analog linked repeaters.
Jumbo spot rtq mini mmdvm hotspot expansion spot dmr p25 ysf radio station wifi digital voice modem raspberry pi zero w android. Since then the mmdvm project lets one build their own p25 repeater. This repeater will do c4fm fusion and fm and dmr and dstar and nxdn. Mark kyle vk4kzk has been busy building a new 2m repeater for the maleny site. While there is a rumor that p25 equipment costs a lot, this is far from the. P25 the wb8nut blog thoughts and ramblings on amateur. Those who want to use p25, dmr, nxdn have to rely on getting equipment from manufacturers who are concentrating on. You can find him on reflector 001c, or xrf005b most times. Poormans p25 dstar repeater using maxtracs blogger. We operate multiple d star repeaters, three dmr repeaters, two system fusion repeaters with wiresx one nexedge repeater, as well as a new mmdvm multimode repeater which operates d star, dmr brandmeister, fusion, and p25.
Super cheap software defined radios such as the rtlsdr can be used to decode these digital voice communication signals instead of expensive radio scanners. Pistar digital voice software preloaded and easily upgraded via software. Up until recently it was possible to decode dstar headers using either dsd 1. Decoding d star voice audio with rtl sdr rtl2832 and dsd 1. It was developed by the japan amateur radio league and uses gaussian minimum shift keying gmsk digital modulation. The dstar implementations of his project moved around many times. P25 is intended to facilitate interoperability between different public safety agencies during emergencies andor joint operations.
This document will attempt to lead you, step by step through the process of putting a dstar repeater on the air from the acquisition of equipment to the implementation of the gateway software. Introduction there are plenty of digital voice modes being used in amateur repeaters. D star digital smart technologies for amateur radio is a digital voice and data protocol specification for amateur radio. The repeater consists of a kenwood tkr850 25 watt repeater with a wacom 6 cavity duplexer. Pi1zwl heeft al een atof voor dmr en ook in amersfoort zijn plannen voor een repeater.
If i only have a d radio, like my ic91a d, can i cross over to a dmr repeater, or any other modes. You need to start with registering for d star repeater access so you can use netlinked d star repeaters. I have a friend that lives in georgia and i have his talkgroup from his local repeater in north georgia in my radio and can talk to him all day which there is no way i could reach his repeater in north georgia from my house in central florida without the node. Dstar compatible radios are manufactured by icom, kenwood, and. We operate multiple dstar repeaters, three dmr repeaters, two system fusion repeaters with wiresx one nexedge repeater, as well as a new mmdvm multimode repeater which operates dstar, dmr brandmeister, fusion, and p25. How to make a mmdvm digital repeater n5amds digital voice. I know he doesnt expect to get it back, but i would like to move into my own equipment so that 1 he can have it back even just to lend to someone else and 2 that i can purchase a unit that does a few more things and not double up on equipment. Note that this is a north american standard and a few other places, europe has. It operates in the 2 meter band, at 222 mhz and the 70cm band. May 21, 2018 here is a video on the jumbospot running mmdvm pi star and how to set it up.
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