Developer of software for dstar, dmr, system fusion, nxdn, p25, and pocsag. Heres another diagram derived from intro to d star that shows the digital format of d star s 4800 bits per second bps signal, to which i added an example of my radio id data. There are other digital modes that have been adapted for use by amateurs, but dstar was the first that was designed specifically for. Here in calhoun county we have the wb4gna dstar repeater, 2 meters wb4gna c 145. Mark kyle vk4kzk has been busy building a new 2m repeater for the maleny site. This is an option for using dstar if there isnt a local dstar repeater or if there is a repeater but its not associated with an internet gateway. Icom with dstar and yaesu with its system fusion are the only manufacturers making equipment specifically for hams. Dstar digital smart technologies for amateur radio ist ein digitaler ubertragungsstandard. From what i have experienced with d star youll have to be next to the repeater if you have a handheld or if you have a mobile d star capable radio youll have a better chance accessing the system. My mmdvm multimode digital radio hotspot with screen working dmr and dstar. The mmdvmraspberrypi combo will turn a single analog radio into a high powered hotspot or 2 radios into a fully featured digital voice repeater. Here is a video on the jumbospot running mmdvm pistar and how to set it up.
Regional programming file create and download a file to import into your programming software. Due to the large number of repeaters, uk, italy and germany are listed as seperate regions. We also operate an fm analog repeater 220 band and a. P25 is a digital mode developed for the united states public sevices as in police, fire, government service, etc. Other local repeaters silvercreek amateur radio association. Of the 3 modes we are going to discuss, d star is the oldest. Some restrictions may apply based on specific country regulations. The dv4mobile is another member of the successful family of dv4 products. Digital voice modes d star, dmr, c4fm, p25 when joining hamradioforum you will get a confirmation email which you need to respond to. Florida p25 amateur radio repeater database for ham repeaters in the us, canada, and mexico. All ive got to do if fit the whole lot into a kit box.
The split repeater is also an oddity as it used to split the dstar data between more than one transmitter and receiver. He is passionate about vhfuhf repeater communications, especially using digital modes and he has owned and operated a number of ham radio repeater installations over the years, including ones in both the provinces of ontario ve3va3 and new brunswick ve9. It was created by the japan amateur radio league jarl and is an open standard. Star, and ysf, as well as p25, nxdn, pocsag, and multiple cross modes when used with a multimode digital voice modem that supports those modes andy taylor, mw0mwz, the main developer, says this on his pistar website.
You need to start with registering for d star repeater access so you can use netlinked d star repeaters. For a homebrew dstar repeater or highpower hotspot, i previously recommended the dvrptrv1 modem combined with the same g4klx dstar software on rpi. The difference between the open spot and the nano spot is this. Pistar is a custom, preconfigured sd card image for the raspbperry pi and other arm based single board computers. 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. May 21, 2018 here is a video on the jumbospot running mmdvm pi star and how to set it up. I currently use a shark rf open spot to use with a dmr radio. C4fm, dstar, dmrplus, dpmr, p25 nxdn later via software updatevoice over lte and of course, fm. How to make a mmdvm digital repeater n5amds digital. Project 25 p25 or apco25 is a suite of standards for digital mobile radio communications designed for use by public safety organizations in north america. Poormans p25 dstar repeater using maxtracs blogger. The audio is some what garble or r2d2 robot voice when someone isnt close enough. Dstar digital smart technologies for amateur radio is a digital voice and data protocol specification for amateur radio. The dongle works along with the dvtool software, a simple application that mimics the controls on a dstar radio, although the interface doesnt actually look like a radio panel.
There are many aftermarket dstar and dmr controller boards being developed. On the left side of the screen, you can see information n the station that last transmitted. All three repeaters are multimode digital supporting dstar, yaesu system fusion cf4m,dmr brandmeister, and p25. P25 radios are a direct replacement for analog uhf typically fm radios, but add the ability to transfer data as well as voice, allowing for more natural implementations of encryption and text messaging. 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. Washington p25 amateur radio repeater database for ham repeaters in the us, canada, and mexico. However you need each type of radio to utilize those modes. Mmdvm digital trunk board dmr c4fm dstar p25, usb repeater hotspot. We also operate an fm analog repeater 220 band and a gmrs repeater.
Yes, you can use a d star repeaters a local repeater. These hotspots are flooding the market and they work just fine, as a cost effective way to get in to the hotspot scene. Jumbospot mmdvm dstardmrc4fmp25nxdn hotspot pistar. Apr 30, 2017 my mmdvm multimode digital radio hotspot with screen working dmr and dstar. When the digital voice signal is being transmitted, the 72bit audio frames and 24bit data frames alternate until the audio transmission is complete, after which a. Equipped with a 32bit microcontroller, a 70cm transceiver 420450mhz and a modulatordemodulator for gmsk and 4fsk modes. It is important to note that is was created for amateur radio.
That modem is out of production, and only 1 gmsk modem is still available from europe. 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. The dstar implementations of his project moved around many times. The dstar repeater call sign and ip address must be registered to the gateway server. D star was developed for the amateur radio community and developed for an international market. Poormans p25 dstar repeater using maxtracs this diagram on how to use two motorola maxtracs is from tim warth, aa2rs. Any issues with signup please use contact us button at bottom of any page. Can i use the dstar repeater without connecting to the internet.
You must enter your callsign into the radios menu digitaltxrx page. Yes, you can use a dstar repeaters a local repeater. It operates in the 2 meter band, at 222 mhz and the 70cm band. The d star repeater call sign and ip address must be registered to the gateway server. Instead, the mmdvm modem replaces it but adds the ability to do multimode if you desire. Most people relate icom with dstar as they have been the primary manufacturer of dstar equipment, however, they are just a manufacturer. It would be nice to have one for p25 that has utility to be used with various radios. 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.
It will be interesting to see what else is announced and demonstrated at the upcoming dayton hamvention. Most people relate icom with d star as they have been the primary manufacturer of d star equipment, however, they are just a manufacturer. Milwaukee county, wisconsin wi scanner frequencies and. The system was developed in the late 1990s by the japan amateur radio league and uses minimumshift keying in its packetbased standard. The mmdvmraspberrypi combo will turn a single analog radio into a high powered hotspot or 2. To do crossmode meaning to translate from one mode dmr, for example to another mode dstar, for example, you need to have a special kind of repeater or a reflector that decodes from one mode and reencodes into the other mode and vice versa.
Select geographical area africa asia australia canada europe eastern europe northern europe southern europe western germany islands italy japan latin america middle east oceania sweden united kingdom usa midwest usa northeast usa southeast usa west. 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. Of the 3 modes we are going to discuss, dstar is the oldest. Dv pro radio interface this is the primary window thats used to configure items and open other windows. P25 the wb8nut blog thoughts and ramblings on amateur.
Now shipping the dv4mini allows you to set up a node and support networked operation with dstar, system fusion, dmr and p25 using a raspberry pi singleboard computer. Its very local right now, but owner james, ve1jcs, is working on a new antenna. The d star repeater uses a sound card, the dvrptr repeater uses the dvrptr modem, the dvap node uses the dvap, the gmsk repeater uses a gmsk modem, and the dummy repeater uses the dvdongle but no radio interfacing hardware. Mmdvm multi mode digital hotspot for dmr, dstar,fusion.
Icom with d star and yaesu with its system fusion are the only manufacturers making equipment specifically for hams. Instead, it uses cables to wire directly into the io pins of the radios you choose. Dstar p25, c4fm and dmr are supported on this new setup. The repeater consists of a kenwood tkr850 25 watt repeater with a wacom 6 cavity duplexer. Dstar is a lot of fun dstar is a lot fun and quite active here in alabama too. Tyt md380 uhf analogdigital tier ii dmr dmr radio usb cable software. Feature supports pi star s webbased digital voice dashboard and configuration tool supports all four digital amateur modes dmr, d star, p25 and system fusion builtin wifi. Pistar is the whole image, it is made up of a number of software components, but pistar is the sum of its parts. Those who want to use p25, dmr, nxdn have to rely on getting equipment from manufacturers who are concentrating on. Dstar was developed for the amateur radio community and developed for an international market. Can i use the d star repeater without connecting to the internet.
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. Mmdvm digital trunk board dmr c4fm dstar p25,usb repeater. Don is a 16year veteran of the telecommunications industry and a licensed canadian ham radio operator since 1988. Funk gibt es mittlerweile fast nur noch digitale standards. Experimental firmware now available for the tyt md380. Both can do everything pistar can dish out including yaesu system fusion ysf, dmr, dstar, p25, nxdn, pocsag paging, ysftodmr, ysftonxdn and ysftop25. There are many aftermarket d star and dmr controller boards being developed. Pistar is digital voice software for personal, lowpower hotspots, as well as repeaters. It uses a mmdvm zum pi board, controled by a raspberry pi running the latest pistar software.
Digitale sprache warc waldviertel amateur radio club. The split repeater is also an oddity as it used to split the d star data between more than one transmitter and receiver. These hotspots are flooding the market and they work just fine, as a. Dstar the wb8nut blog thoughts and ramblings on amateur. Details about mmdvm digital trunk board dmr c4fm dstar p25, usb repeater hotspot. The nano spot uses dmr, p25, fusion and i believe dstar. How to make a mmdvm digital repeater n5amds digital voice. Up until recently it was possible to decode dstar headers using either dsd 1. Even despite that id still go with a dmr radio over a dstar radio just because with that hot spot you can also connect to the ysf reflector system fusion, p25, and nxdn networks with it so its more flexible. Mapping ber and signal stength of p25 radio systems. In our area most p25 repeaters now get a lot less use when a digital voice system like dstar or dmr comes on the air since there is a lot more activity on a networked digital system. The original thread asked for way to build a portable p25 repeater. Two of the modes could be done in software, p25 and dstar, as the patents that cover the voice coding are expired. Search this database for your own or any other callsign to see if it is registered for access to the icom us trust network ref reflectors and g2 network access.
The dstar repeater uses a sound card, the dvrptr repeater uses the dvrptr modem, the dvap node uses the dvap, the gmsk repeater uses a gmsk modem, and the dummy repeater uses the dvdongle but no radio interfacing hardware. 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. Uhf vhf mmdvm hotspot support p25 dmr ysf dstar for. Jan 10, 2008 poormans p25 dstar repeater using maxtracs this diagram on how to use two motorola maxtracs is from tim warth, aa2rs. Tyt md380 uhf analogdigital tier ii dmr dmr radio usb cable software us seller. The mmdvmrepeater board is a lot like a hotspot, except it doesnt have a radio built onboard. With dstar you can talk to your local repeater, another repeater, a reflector which can have 10 or hundreds of repeaters connected to it or even an individual person. Located in rittman, its a lowprofile repeater for testing. The open spot allows you to use one radio with it to do dmr, fusion and dstar. As far as i can tell, dstar is more or less dying a slow death.
Dstar digital smart technologies for amateur radio ist ein digitaler. I think the open spot will eventually with firmware upgrades may be able to add the other modes still using one radio. 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. It looks like they are going to bring out something that is based on p25.
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. The dv4mini comes without antenna with its software for connection with dcs, xrf and ref reflectors for dstar icom mode, as. As well as first open source gmsk node adapter repeater hotspot software. The only thing the repeater sees is a digital stream. Mmdvm multi mode digital hotspot for dmr, dstar,fusion and. Dstar calculator calculate what to put in your, rpt1, rpt2 fields for linking, etc. Frequency license type tone out tone in alpha tag description mode tag. Star, and ysf, as well as p25, nxdn, pocsag, and multiple cross modes when used with a multimode digital voice modem that supports those modes. New vhf multimode p25fm repeater in richmond, va qrz.
102 1267 801 486 1375 78 1390 617 405 1584 957 31 729 1198 501 1410 1280 1373 612 1158 1068 42 1122 811 733 1389 158 1201 282 774 1165 346 1458