P25 Web Links
P25 Training Guide
http://www.dvsinc.com/papers/p25_training_guide.pdf
P-25NX Project
Source for the P25NX repeater linking project
https://github.com/p25nx/pnx-mono
Implementation of the APCO Project 25 protocol over IP and IP-encapsulated HDLC transports
https://github.com/jaamison/p25netjs
P25 Network Exchange from the DCC by HamRadioNow on YouTube
V.24 transport over Ethernet
http://batboard.batlabs.com/viewtopic.php?t=109314
Open Source V.24 Board
http://p25.io/quantar-v-24-interface-board/
Miscellaneous network notes and diagrams
https://www.cs.indiana.edu/usr/local/www/classes/a247/misc.html
HDLC: A Technical Review
http://vkalra.tripod.com/hdlc.html
CISCO Configuring and Troubleshooting Serial Tunneling (STUN)
https://www.cisco.com/c/en/us/support/docs/ip/serial-tunnel-stun/16398-50.html
AllStar and P25 on Quantar
http://wiki.w9cr.net/index.php/Allstar_and_P25_on_Quantar
Midwest Quantar Bridge
Midwest Project links:
http://v24bridge.net/V24-Decoded-Data-to-Share.pdf
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:
USA P25 Reflector Dashboard PCS002
Open USA P25 Reflector Dashboard in new tab
N1AJW P25 Reflector TG 31648 Dashboard
http://p25.alecwasserman.com/p25reflector/
P25 Talkgroups / Reflectors Dashboard List
From: http://vk4tux.duckdns.org:82/info.html/ and http://mrickey.com/2018/03/p25-talkgroups-reflectors/
MMDVM
MMDVM Digital Repeater Block Diagram
G4KLX/P25Clients for MMDVM
https://github.com/g4klx/P25Clients
MMDVM with processor on board by Wojciech Krutnik
using the concept of SQ6POG, Paweł Gomulka
https://github.com/wojciechk8/MMDVM_pog
INADDVM from INAD Communications by Kevin Custer W3KKC
http://www.inadvm.com/inadvm/inadvm-rev2-index.html
MMDVM P25 Hosts
P25 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 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
# 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
Micro-Node International TEENSY Multi-Mode Digital Voice Modem
TEENSY MMDVM Product Page
TEENSY MMDVM User's Manual
http://micro-node.com/teensy_user.pdf
Repeater Builder STM32_DVM
STM32 DVM Page
http://www.repeater-builder.com/products/stm32-dvm.html
STM32 DVM FAQ
http://www.repeater-builder.com/products/stm32-dvm-faq.html
STM32 DVM Board Layout and Schematic
http://www.repeater-builder.com/products/pdfs/STM32_DVM_v3.pdf
STM32-DVM to Mini-DIN and Motorola 16pin ACCY
http://www.repeater-builder.com/products/pdfs/Mot_Maxtrac_and_mini-DIN.pdf
Updating STM32 DVM Firmware
https://github.com/N4IRS/MMDVM-Install/tree/master/STM32-DVM
STM32 DVM Firmware Files
http://dvswitch.org/files/HAM/MMDVM/
Connecting an SSD1306 OLED Display (optional)
https://www.f5uii.net/en/installation-oled-display-ssd1306-raspberry-pi-mmdvm-mmdvmhost/
How-to-build or modify your Nextion® Screens for MMDVMHost
https://www.hamdigitaal.nl/download/algemene-informatie/NEXTION_Tutorial_v2.03.pdf
STM32 DVM Receive Audio Setup
STM32 DVM Transmit Audio Setup
ZumSpot (Also see Pi-Star section)
Designed 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, KC6N
Document is updated for Pi-Star v3.4.15
http://papasys.com/dmr/resources/DATA/docs/ZumSpot_Pistar_KC6N_20180607.pdf
ZumSpot and MMDVM Demo Page by VE1CRA
http://ve1cra.net/main/zum.html
ZumSpot Firmware Releases (For other platform HW too)
https://github.com/juribeparada/MMDVM_HS/releases
Pi-Star
http://www.pistar.uk/index.php
Pi-Star Downloads
http://www.pistar.uk/downloads/
W1MSG Pi-Star Installation Videos on YouTube
https://www.youtube.com/channel/UCcjYjtognBaSAa-ZLk3EU2A
W1MSG Pi-Star P25 Host File Update on YouTube
Playing with Pi-Star by KE0FHS
https://www.toshen.com/ke0fhs/pi-star.htm
Motorola® Quantar®
General Quantar Info from Motorola Electronic Catalog
http://www.repeater-builder.com/motorola/quantar/pdfs/quantar-general-information-from-ecat.pdf
Identification of a Motorola Quantar Modules
http://www.repeater-builder.com/motorola/quantar/quantar-id/quantar-article.html
Quantar® Exciter Repair
http://p25.io/quantar-exciter-repair/
Quantar Onan Power Supply Repair
http://p25.io/quantar-onan-power-supply-repair/
Quantar® Interfacing
http://www.repeater-builder.com/motorola/quantar/q-interfacing/quantar-interfacing.html
Yaesu DR-1X P25 (Using STM32_DVM_PiHat Adapter) How-To
Duplexers
Theory and Testing of Duplexers by VE2AZX
http://www.repeater-builder.com/antenna/pdf/ve2azx-duplexer-info.pdf
Cleaning and refurbishing the Motorola T-1500 series UHF Cavity
by Cactus Inter-Tie System
http://www.cactus-intertie.org/LA/tec_not6.pdf
T-1500A Duplexer Manual
http://www.repeater-builder.com/motorola/t1500/t1500-6881102e96-g.pdf
T-1504A Duplexer Connection Diagram - High/Low Freq Connections
High Frequency side versus Low Frequency side - see diagrams in document below
Combiners
About Combiners by Decibel Products
http://www.repeater-builder.com/antenna/db/pdfs/db-about-combiners.pdf
DB Products DB4350 and DB4360 Low Loss Combiners Tuning
DB Products ACT27xxJ2 and DBNXTL27xx Transmitter Combiner Tuning
http://www.repeater-builder.com/antenna/db/pdfs/act27+dbnxtl27-combiners.pdf
DB Products DB4379 Low Loss Combiner Tuning
http://www.repeater-builder.com/antenna/db/pdfs/db-4379-low-loss-combiner-tuning-instructions.pdf
Celwave 220 MHz Combiner
http://www.repeater-builder.com/antenna/pdf/celwave-220.pdf
The beer barrel as a VHF Cavity Resonator
http://www.repeater-builder.com/antenna/pdf/beer-barel-cavity.pdf
A Strategy for Adding a Digipeater to a VHF Repeater
http://www.repeater-builder.com/projects/pdfs/kh6cq-ham-tip-19.pdf
Transmitter Multiplexing using Motorola T-1500 Series Cavities
http://www.repeater-builder.com/motorola/t1500/t1500-cavity-app-notes.pdf
NXDN
Get an NXDN ID
MMDVM 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:
Keywords: APCO APCO25 P25 P-25 Quantar MMDVM V.24 V24 HDLC Zumspot Pi-Star Combiner Duplexer DMRId