Documentation
Link’d DMR docs
Documentation grows alongside the app. During private testing, this page covers the essentials: what the project is, how tester setup works, and answers to common questions.
About
What is Link’d DMR?
Link’d DMR is an independent project building a hybrid push-to-talk communications platform for Android. It is designed to connect teams three ways: cellular push-to-talk over Wi-Fi, 4G, or 5G; offline phone-to-phone Wi-Fi mesh when internet service disappears; and optional bridging into real DMR or analog radio systems through compatible gateway hardware such as the CJ-1.
Link’d DMR is currently in active development and private owner testing. Cellular PTT, offline mesh, automatic switching, radio gateways, and hardware compatibility must complete real-device and field validation before wider release.
Setup guide
Tester setup
Link’d DMR uses provisioned device access rather than a traditional account sign-up.
Download the signed APK.
Install it on a supported Android device.
Receive an authorized provisioning QR or device certificate.
Select permitted talkgroups.
Connect a supported gateway if RF is needed.
Begin private-beta testing.
FAQ
Frequently asked questions
Can I download the app right now?
Not yet. The build is distributed privately to approved beta testers as a signed APK. The download page will show version, checksum, and signing details once a public release is published.
Does it work with my existing DMR radios?
Radio bridging requires a compatible, validated gateway such as the CJ-1. Support depends on the exact device, radio interface, licensing, and configuration — universal radio compatibility is not claimed.
How far does the offline mesh reach?
Early design estimates range from roughly 100–500 feet per ordinary phone-to-phone hop in open conditions. Dedicated relays and properly installed directional Wi-Fi bridges may extend coverage significantly. Actual results depend on terrain, device hardware, mounting, interference, and line of sight.
Do I need to create an account?
No. Link’d DMR uses provisioned device access: approved testers receive an authorized provisioning QR code or device certificate instead of a traditional email/password sign-up.
Is my voice audio stored on servers?
Live audio is designed not to be stored server-side. Final behavior will be documented once the deployed backend completes verification.
Is this a Motorola product?
No. Link’d DMR is an independent project and is not affiliated with or endorsed by Motorola Solutions. MOTOTRBO is a trademark of Motorola Solutions, Inc.
Changelog
Release history
No public releases have shipped yet. Once signed builds are published, version history, release notes, and known limitations will be listed here and on the download page.