DVS-M17

DVS-M17 connects you directly to the M17 digital voice reflector network — no servers, no accounts, no gateways in between.

M17 is the open-source digital voice protocol built by hams, for hams, using the open Codec 2 vocoder (3200 bps). DVS-M17 speaks the reflector protocol natively over UDP, so your Android phone or tablet becomes a full M17 client.

LISTEN ANYWHERE

* Browse 100+ reflectors from the built-in host list, refreshed from the DVRef directory

* Listen-only mode needs no callsign — just pick a reflector and hear the network

* Live Last Heard dashboard shows who is talking across the reflector network right now, powered by DVSRef

* Scan several reflectors at once through a single decoder, and jump in when something catches your ear

TALK WITH PTT

* Link to any reflector module (A–Z) with your callsign

* Press-and-hold push-to-talk with a live audio level meter

* Half-duplex mode mutes receive while you transmit, just like a radio

* Pair a Bluetooth PTT microphone (Inrico-style speaker mics like PTT-Z01/B01) — the mic button keys the radio while linked, even with the screen off

KNOW WHO YOU ARE TALKING TO

* Live caller screen shows the transmitting station's callsign, name and location (via the RadioID database), and QRZ.com photo

* Call log records every received and transmitted contact

* Link quality indicator tracks packet loss in real time

BUILT FOR ANDROID

* Native Jetpack Compose interface with a dark theme, on Android 8.0 and later

* Works over Wi-Fi and mobile data

* Keeps receiving in the background while you use other apps

* Open a reflector straight from a link with the im17:// deep link

ABOUT TRANSMITTING

A valid amateur radio licence is required to transmit on a reflector, because that audio reaches the airwaves. Listening, and direct peer-to-peer calls over Wi-Fi, never require one. DVS-M17 can verify your licence against QRZ.com, RadioID.net or AllStarLink, and never stores your password.

OPEN SOURCE

M17 is an open protocol: https://m17project.org

Codec 2 is bundled under the LGPL-2.1 licence. DVS-M17 collects no data and contains no advertising or tracking.

Whether you run an M17 hotspot, a handheld, or you are just curious about open-source digital voice, DVS-M17 is the easiest way to get on the M17 network.