DSD-neo

DSD-neo turns your Android phone or tablet into a digital radio decoder and trunking scanner. Plug in an RTL-SDR or Airspy receiver, or connect to an rtl_tcp server, and it decodes the voice and shows who is talking: talkgroups, radio IDs, names, and the system and site. Everything runs on your device. No subscriptions, no streaming servers, no accounts.

WHAT YOU NEED

• An RTL-SDR dongle or an Airspy R2 or Mini, plugged in with a USB-OTG adapter, or an rtl_tcp server elsewhere on your network (no OTG needed)

• An antenna for the bands you want to hear

• Frequencies and system details for your area, or a RadioReference premium subscription to import them

WHAT IT DECODES

• P25 Phase 1 and Phase 2, conventional and trunked, including simulcast sites

• DMR, conventional and trunked (Tier III, Capacity Plus, Connect Plus and more)

• NXDN48 and NXDN96, conventional and trunked

• TETRA, trunked and direct mode

• D-STAR, Yaesu System Fusion (YSF) and M17

• dPMR and X2-TDMA in Auto mode, plus EDACS and ProVoice through Extra decoder arguments in Settings

• Analog FM and AM, with squelch and CTCSS/DCS tone filtering on FM

FEATURES

• Trunk following: it listens to the control channel and tunes to each call by itself

• Saved systems: one tap to listen, and pin your favorites to the top

• Scan lists: scan several systems and frequencies, digital and analog, with one receiver

• RadioReference import: find a system by zip code, county or system ID, and DSD-neo builds its talkgroup list and channel map for you

• Signal search finds active frequencies across a range, and a live spectrum view helps you tune

• Call history you can search by talkgroup, radio ID or frequency, plus an event log for system activity beyond voice

• Call recordings saved as WAV files you can play, share or export, and optional upload to your own rdio-scanner server

• Talkgroup and radio names from your own lists, with mute, lock out and skip

• Encrypted backup of your systems, lists, keys and settings, to keep a copy or move to a new phone

• Keeps decoding in the background while you use other apps, and can start by itself when you plug in your receiver

• Also takes audio from SDR software over TCP or UDP, and plays back recorded files

GOOD TO KNOW

• DSD-neo does not break encryption. Encrypted calls stay muted unless you enter the key yourself, for systems you are allowed to listen to.

• This is a radio tool, not a streaming app: nothing plays without a receiver picking up a real signal.

• Reception depends on your receiver, antenna and local conditions.

• Radio monitoring laws vary by country and region. Know yours before you listen.

• Moving from the APK on GitHub? Save a backup (Settings → Backup), uninstall the GitHub version, then install from Google Play and restore. The two are signed differently, so one will not install over the other.

PRIVACY

DSD-neo collects no data: no analytics, no ads, no accounts. Everything is processed on your device, and the app only connects to servers you set up yourself, such as an rtl_tcp server, RadioReference or your rdio-scanner server.

OPEN SOURCE

DSD-neo is free software under the GPL-3.0. Source code, documentation and issue tracker: https://github.com/arancormonk/dsd-neo