P25 Web Links

P25 Training Guide

http://www.dvsinc.com/papers/p25_training_guide.pdf

P-25NX Project

http://www.25nx.com

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

https://youtu.be/DTONSPikmks

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/

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:

https://github.com/ZL4JY/SQD

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

http://www.micro-node.com/store/#!/TEENSY-Multi-Mode-Digital-Voice-Modem-Designed-for-MMDVM-Open-Source-Firmware-Compatibility/p/83099252/category=0

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

https://youtu.be/dYBRPLysazg

STM32 DVM Transmit Audio Setup

https://youtu.be/tHummBrS0C4

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

https://youtu.be/jFXEmDwW8fo

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

https://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=

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

Open document in new tab for printing or download

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

http://www.repeater-builder.com/antenna/db/pdfs/db-4350-4360-low-loss-combiners-tuning-instructions.pdf

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

http://nxmanager.weebly.com/

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:

http://ham-digital.org/

Keywords: APCO APCO25 P25 P-25 Quantar MMDVM V.24 V24 HDLC Zumspot Pi-Star Combiner Duplexer DMRId