W4YEAResources · Digital networks
QSO One is a free app that puts you on several amateur radio networks from a phone or computer: AllStarLink, EchoLink, IAX Direct, DMR, System Fusion and M17. It aims to replace the Raspberry Pi, radio interface and Linux setup that a traditional AllStarLink node needs.
Third-party software. QSO One is third-party software built by KD8JKK. It is not operated, sponsored or endorsed by W4YEA, and W4YEA cannot provide support for it. Features, prices and availability are summarized as of the date above; the official QSO One pages are the authority.Summarized 2026-10-08 from the official QSO One pages.Official QSO One site (opens in a new tab)Official features page (opens in a new tab)Official download page (opens in a new tab)
QSO One is free with a QSO One account created with your callsign. The Microsoft Store version of the Windows app does not need that account to install; the direct Windows installer and the direct Android download do.
Windows
Available now
Windows 10 and 11, 64-bit. The Microsoft Store version is recommended: it updates itself and avoids antivirus warnings. A direct installer is also offered. The network connection needs UDP port 4569 open.
Android
Available now
Android 8.0 and above, from Google Play (recommended) or a direct download. It keeps a persistent connection while you switch apps or lock the screen.
iOS, macOS and Linux
Coming soon
Listed as in development. Free when they launch.
No hotspot or radio needed
DMR, System Fusion and M17 run in software, so no hotspot and no radio are required. For AllStarLink, QSO One does what a software node does without a Raspberry Pi or radio interface.
Push-to-talk
Push-to-talk works three ways: an on-screen button, the spacebar on a computer, and Bluetooth, BLE or PoC hardware PTT buttons.
Some networks need their own account or ID before QSO One can connect. The "needs" line says which.
Node Mode and WT Mode
Connects over the same IAX2 protocol physical nodes use, with DTMF control and a searchable list of nodes with favorites.
Needs: A free AllStarLink account. Node Mode also needs an approved AllStarLink node registration. WT Mode (Web Transceiver) connects you as a guest and needs only the account.
Direct and Proxy
Standard connection for home and office networks, with automatic proxy fallback for cellular and restricted networks, and a directory of EchoLink stations and repeaters.
Needs: A free EchoLink registration. EchoLink requires a valid amateur radio license and checks your callsign during registration. You then enter your EchoLink login in QSO One's EchoLink settings.
BrandMeister and TGIF
Receive and transmit on both networks, switch talkgroups in the app, and browse a talkgroup list with recent activity. No hotspot or radio is needed.
Needs: A DMR ID from RadioID.net, plus your BrandMeister and TGIF credentials. QSO One saves the credentials for both networks.
Reflectors
C4FM digital voice on YSF reflectors in software, with a searchable reflector directory and favorites. No hotspot or radio is needed.
Needs: Your callsign. No separate account or ID.
Reflectors and modules
The open-source digital voice mode. Pick any reflector and module in the app. It uses the open Codec 2 voice codec.
Needs: Your callsign. No separate registration.
Straight to a specific AllStar node
Connects directly to one AllStar server with no central registry and no relay. It works with stock ASL3 and with HamVOIP and older ASL2 servers.
Needs: Login details issued by that node's operator: host, port and username plus the shared key they provide. You cannot use this without the operator's permission.
Create your free QSO One account
Sign up on the official site with your callsign. You need this account to sign in to the app and to get the direct downloads.
Install the app
On Windows, the Microsoft Store version is recommended. On Android, use Google Play, or the direct download. Windows needs UDP port 4569 open on your network.
Sign in with your callsign
Open the app and sign in with the QSO One account you just created.
Start with a network that needs the least setup
System Fusion and M17 use only your callsign. AllStarLink's WT Mode needs just a free AllStarLink account. Listen before you transmit.
Add the other networks when you are ready
EchoLink needs its own free registration. DMR needs a DMR ID from RadioID.net plus your BrandMeister and TGIF credentials. Node Mode needs an approved AllStarLink node. IAX Direct needs login details from a node's operator.
Connect, listen, then key up
Pick a reflector, room or node, listen for a while, and use the on-screen PTT, the spacebar or a Bluetooth button to transmit.
If it will not stay connected
On Android, turn off battery optimization for QSO One, and on some phones add it to the protected or auto-start list. If a node will not connect, check your credentials and that UDP port 4569 is open, and try WT Mode as a fallback.
These open QSO One's own site in a new tab.
W4YEA has a QSO One account and is still setting up its network connections, so do not expect to find W4YEA on every network yet.
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