This page contains miscellaneous information related mainly to P25 communications. Several Dayton, Ohio area hams are interested constructing a local area P25 communications system. The information collected below is intended to assist with technical issues we may encounter. Feel free to read and browse the links and learn with us. https://cdn.codancomms.com/general-downloads/Products/User-Guides/Codan_TG-001-4-0-0-P25-Training-Guide.pdf P25 Training Guide by CODAN Communications https://cdn.codancomms.com/general-downloads/Products/User-Guides/Codan_TG-002-3-0-0-Radio-Repeater-System.pdf Radio Repeater System Guide by CODAN Communications P-25NX ProjectSource for the P25NX repeater linking projecthttps://github.com/p25nx/pnx-monoImplementation of the APCO Project 25 protocol over IP and IP-encapsulated HDLC transportsP25 Network Exchange from the DCC by HamRadioNow on YouTubehttps://youtu.be/DTONSPikmks V.24 transport over EthernetOpen Source V.24 BoardMiscellaneous network notes and diagramsHDLC: A Technical ReviewMidwest Project links:Hardware list:The hardware used in this project consists of:
Motorola Quantar/Quantro for frequencies of interest (VHF/UHF/800) - (receiver and/or transmitter site)
Motorola OEM or aftermarket V.24 card, set for EXTERNAL Clocking
Motorola AstroTAC receiver unit for frequencies of interest (receive-only site and V.24 built-in already)
Cisco router capable of running Advanced Enterprise IOS (we use 1841 or 2651XM surplus units with 12.4 IOS)
Cisco WIC-1T Serial Interface Module installed in router selected
Cisco CAB-232FC DB-60 to DB-25 female cable - for WIC-1T (optionally you can use other multiple Serial port cards with matching cables)
Homemade CAT-5 to DB-25 male cable to connect Motorola gear to the Cisco gear (see diagram provided) WireShark Simple Quantar Decoder:P25 Manufacturer’s ID (MFID)The Header Code Word and Link Control Word (LDU1) contain the 8 bit MFID field. When the manufacturer uses non-standard (data only) features, the MFID is asserted. When all of the other information fields conform to the Common Air Interface definitions, the MFID has a standard value of $00 or $01. A P25 radio must, as a minimum, transmit or receive messages using the the standard values for the MFID field. As a minimum, a P25 receiver will ignore messages which do not contain the standard values for the MFID field. Every manufacturer is assigned an MFID that can be used for proprietary signaling. Non-standard data from one manufacturer may not pass through another manufacturers repeater system. The MFID’s that have been assigned are: $10 Relm / BK Radio $20 Cycomm $28 Efratom Time and Frequency Products, Inc $30 Com-Net Ericsson $38 Datron $40 Icom $48 Garmin $50 GTE $55 IFR Systems $60 GEC-Marconi $68 Kenwood Communications $70 Glenayre Electronics $74 Japan Radio Co. $78 Kokusai $7C Maxon $80 Midland $86 Daniels Electronics Ltd. $90 Motorola $A0 Thales $A4 M/A-COM $B0 Raytheon $C0 SEA $C8 Securicor $D0 ADI $D8 Tait Electronics $E0 Teletec $F0 Transcrypt International USA P25 Reflector Dashboard PCS002From: http://vk4tux.duckdns.org:82/info.html/ and http://mrickey.com/2018/03/p25-talkgroups-reflectors/
MMDVMMMDVM Digital Repeater Block DiagramG4KLX/P25Clients for MMDVMMMDVM with processor on board by Wojciech Krutnikusing the concept of SQ6POG, Paweł Gomulka
MMDVM P25 HostsP25 TG Number Description TG 10100 World Wide, 1010x TG 10200 North America, 1020x TG 10201 North America TAC1 TG 10300 Europe, 1030x TG 10301 Europe TAC1 TG 10400 Pacific, 1040x TG 10401 Pacific TAC1 TG 10402 pacific TAC2 TG 10403 pacific TAC3 TG 28299 America-Ragchew, 28299 TG 31010 Alabama Link TG 31171 Illinois Link TG 31665 31665 P25-DMR Gateway TG 31672 31672 P25 Pi-Star chat TG 50525 50525 Bridge to YSF, NXDN and DMR TG 9999 Disconnect # /usr/local/etc/P25Hosts.txt # # The format of this file is the number of the Talk Group followed by the host name or address and port # # World Wide, 1010x 10100 85.119.82.151 41000 # North America, 1020x 10200 dvswitch.org 41000 10201 dvswitch.org 41010 # Europe, 1030x 10300 176.9.1.168 41000 10301 ea5gvk.duckdns.org 41000 # Pacific, 1040x 10400 pacificp25.repeaters.info 41000 10401 pacifictac1.repeaters.info 41010 10402 47.104.177.248 41000 10403 120.234.41.144 41000 # America-Ragchew, 28299 28299 65.101.7.51 41000 # Alabama Link 31010 p25.alabamalink.info 41000 # 31171 Illinois Link 31171 74.208.235.115 41000 # 31665 P25-DMR Gateway 31665 74.91.127.166 41000 # 31672 P25 Pi-Star chat 31672 w1msg.trianglenc.net 41000 # 50525 Bridge to YSF, NXDN and DMR 50525 50525.p25dvm.com 41000 TEENSY MMDVM Product PageTEENSY MMDVM User's ManualRepeater Builder STM32_DVMSTM32 DVM PageSTM32 DVM FAQSTM32 DVM Board Layout and SchematicSTM32-DVM to Mini-DIN and Motorola 16pin ACCYUpdating STM32 DVM FirmwareSTM32 DVM Firmware FilesConnecting an SSD1306 OLED Display (optional)How-to-build or modify your Nextion® Screens for MMDVMHostSTM32 DVM Receive Audio SetupSTM32 DVM Transmit Audio SetupDesigned by Jim Mclaughlin, KI6ZUM, with firmware by Andy, CA6JAU (GitHub: juribeparada / MMDVM_HS ), based on the MMDVM software by Jonathan Naylor, G4KLX (GitHub: g4klx / MMDVM ). ZUMspot/Pi-Star Bring-up and initialization by David Hull, KC6NDocument is updated for Pi-Star v3.4.15 ZumSpot and MMDVM Demo Page by VE1CRAZumSpot Firmware Releases (For other platform HW too)W1MSG Pi-Star P25 Host File Update on YouTubePlaying with Pi-Star by KE0FHShttps://www.toshen.com/ke0fhs/pi-star.htm
If you are running Pi-Star 3.x then upgrade to v4.1.0Note: v4.1 has voice announcements for P25 Talk Groups. RELEASE Pi-Star v4.1.0 Post by MW0MWZ » Thu Mar 26, 2020 1:37 pm Pi-Star v4.1.0 is finally out of release candidate status and is now in release. If you are running any of the release candidates, you can upgrade http://pi-star/admin/expert/upgrade.php to the release version. So whats new - not much if you are upgrading from 4.1.0-RCx, the RC releases rolled us through some issues on Pi4 hardware and wifi, plus some issues with keeping the time updated, thankfully those are in the past! Upgrading from 4.0.x - 4.0.x ran the rather shorter lived "Stretch" build of Raspbian, and "Buster" was released so quickly that it never made it to a prime time release. It will keep running, but it is strongly recommended to re-image your card and move up to 4.1.0 when you can. The main difference between 4.0 and 4.1 is the operating system, 4.1 runs the current "Buster" release. Upgrading from 3.x to 4.1 - Pi-Star 4.1.x is still the Pi-Star software you know and love, it might not look much different on the outside, but here is where the similarities end. The underlaying "Wheezy" OS in Pi-Star 3.x is on life-support, updates are already vanishing from the repos and you should upgrade to 4.1.x to make sure that your Pi is going to be up to date and keep receiving updates. Version 3.x is no longer receiving updated binaries for the radio related software, so new features will only be available in 4.1.x and beyond. Changes from 3.x to 4.1.x relate mostly to the radio softwares as these are keeping pace with the code released by Jonathan (G4KLX), Andy (CA6JAU) and the long list of people who commit to their repositories (including me). In some cases when pushing changes to their repositories is not possible for some reason, or when we want to large-scale test a few feature - Pi-Star may get it first, but the code is always committed back to the source repo. Should you upgrade to 4.1.x? - Simply put yes, this is where all of the updates are happening and its the only version running on the current "Buster" OS. What if I don'r run on Raspberry Pi hardware? - We're working on updates for those images too. Motorola® Quantar®General Quantar Info from Motorola Electronic CatalogIdentification of a Motorola Quantar ModulesQuantar® Exciter RepairQuantar® InterfacingYaesu DR-1X P25 (Using STM32_DVM_PiHat Adapter) How-Tohttps://translate.google.com/translate?sl=de&tl=en&js=y&prev=_t&hl=en&ie=UTF-8&u=http%3A%2F%2Fwww.spacesupport.de%2Fmmdvm%2Fyaesu-dr1xe-mit-mmdvm%2F&edit-text=
DuplexersTheory and Testing of Duplexers by VE2AZXCleaning and refurbishing the Motorola T-1500 series UHF Cavityby Cactus Inter-Tie SystemT-1500A Duplexer ManualT-1504A Duplexer Connection Diagram - High/Low Freq ConnectionsHigh Frequency side versus Low Frequency side - see diagrams in document below
About Combiners by Decibel ProductsDB Products DB4350 and DB4360 Low Loss Combiners TuningDB Products ACT27xxJ2 and DBNXTL27xx Transmitter Combiner TuningDB Products DB4379 Low Loss Combiner TuningCelwave 220 MHz CombinerA Strategy for Adding a Digipeater to a VHF Repeaterhttp://www.repeater-builder.com/projects/pdfs/kh6cq-ham-tip-19.pdfTransmitter Multiplexing using Motorola T-1500 Series CavitiesNXDNGet an NXDN IDMMDVM NXDN Reflectors
Ham Radio 2.0: Episode 142 - RadioID.Net Updates with VE9GLN Explanation of how DMR IDs will be assigned and the new account based system which provides instantaneous DMR ID updates DMR ID Last Heard and database info except Europe:
P25 Net Thursday Night 8pm Central on P25 TG 31171From: James Riley July 4 at 10:43 AM Joins us each Thursday night at 8 pm central for the Illinois digital net on Illinois Link Wires-X room 21565, Brandmeister DMR 31171, P25 31171 NXDN 31171 and YSF Reflector Us Illinois Link. If you need the IP address for the P25 and NXDN talkgroup email me at kb9tzq@gmail.com also join us on Facebook. Adding Illinois Link P25 and NXDN to Pi-StarHere is how to add the NXDN and p25 Talkgroups to Pi-Star View this YouTube to find the best way to add a talkgroup to Pi-Star: https://youtu.be/jFXEmDwW8fo P25 is 31171 IP 74.208.235.115 41000 NXDN is 31171 IP 74.208.235.115 41400 Both should be linked to DMR and YSF From Pi-Star Config/Expert/SSH, set rpi-rw, then edit the 2 host files with these commands: "sudo nano /root/P25Hosts.txt" and sudo nano /root/NXDNHosts.txt". The format should be room number, IP address, port number. Save and do a "update" command from Admin or Config page and you should see your rooms added to the drop down lists. Dashboard for Illinois Link P25 is at http://74.208.235.115/P25Reflector-Dashboard/ Access to DVSwitch forum on Groups.IOGroup Description: The *official* place to go for discussion/support for DMRlink, HBlink, DVSwitch, Quantar Bridge (Note: Log-in to Groups.IO first) Weblink to DVSwitch top levelWeblink to Quantar Bridge Sub GroupWeblink to Quantar Bridge Files section; includes Cisco router and Astrotac Comparator 3000 codehttps://dvswitch.groups.io/g/Quantar-Bridge/fileshttps://digistump.com/wiki/digispark/tutorials/connecting
Keywords: APCO APCO25 P25 P-25 Quantar MMDVM V.24 V24 HDLC Zumspot Pi-Star Combiner Duplexer DMRId DVSwitch
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