Digital Radio Unit ID Sounds and More

This collection was created to help scanner enthusiasts, amateur radio operators, and anyone interested in monitoring the airwaves identify the growing variety of signals heard outside the amateur bands. As technology evolves, more systems are appearing on the air using distinctive tones, bursts, and digital modulations that may be unfamiliar at first. By listening to these examples, you’ll be able to recognize many of the common (and not-so-common) sounds you may encounter while scanning.
All audio samples are provided in MP3 format for ease of playback. Simply click on the play button to hear the sound directly in your browser.
Whether you’re a new listener or a seasoned operator, this page is designed to make monitoring more enjoyable and informative by giving you the tools to recognize what you hear.
These recordings are in the public domain and may be freely shared and used for personal or educational purposes. If you plan to include these sounds in commercial projects, presentations, or media, please credit the original source as a courtesy to the compiler who made this resource available to the radio community.
| Title | Play | Download |
|---|---|---|
Motorola MDC-1200 | Download | |
emit a tone on key-up | Download | |
MDC-1200 Preamble | Download | |
MDC-1200 Echo | Download | |
MDC DOS | Download | |
DOS blocking NYPD command & executive units use the Vertex VX-824
portable radio, and the Vertex units produce a slightly
different sounding MDC burst than a normal Motorola radio, so
the DOS blocking at the
repeater sounds noticeably different.
(Thanks Ahmed!) | Download | |
Alternate MDC-1200 | Download | |
This | Download | |
Motorola MDC-600 | Download | |
Motorola TPS | Download | |
FDNY's implementation of TPS | Download | |
Motorola ATIS | Download | |
MODAT | Download | |
GE STAR | Download | |
GE
G-Star 400 | Download | |
DTMF | Download | |
Kenwood FleetSync | Download | |
second sample | Download | |
updated sample Here is an updated sample of
FleetSync in the more common 1200-buad mode.
(Thanks Augy!) | Download | |
sample Here is a sample in the
lesser-used 2400-baud mode. (Thanks Augy!) | Download | |
sample Here is a sample
of the PTT side-tone that plays to notify the radio user to
pause while the data burst is being sent before it's OK to begin
speaking. (Thanks Branson!) | Download | |
sample Here is a sample of
the FleetSync selective calling alert as heard by the user when
someone calls them with a proper matching ID code
(Thanks Branson!) | Download | |
Tait MP7 | Download | |
Hytera HDC1200 | Download | |
Motorola 2175/1950 F1
Keying Tone | Download | |
Italian Carabinieri | Download | |
Italian
police | Download | |
Motorola DVP-XL | Download | |
Motorola DES-XL | Download | |
Motorola SECURENET | Download | |
recovered audio | Download | |
decoded audio | Download | |
Encryption on FDMA | Download | |
Encryption on TDMA | Download | |
AES Encryption on
ProVoice | Download | |
Encryption on Aegis | Download | |
Here | Download | |
Aegis VGE Encryption | Download | |
Unknown Analog
Encryption | Download | |
Kenwood NEXEDGE Digital
Encryption | Download | |
MotoTRBO Basic PrivacyDigital Encryption | Download | |
MotoTRBO Enhanced Privacy
Digital Encryption | Download | |
in the raw | Download | |
Hytera 256-Bit DMR DigitalEncryption | Download | |
Tytera DMR Enhanced Privacy | Download | |
Marconi DM8000
DES | Download | |
MASC Voice Scrambling | Download | |
Transcrypt International 410 Voice
Scrambling | Download | |
Transcrypt International 430 Voice
Scrambling | Download | |
Transcrypt International 460 Voice
Scrambling | Download | |
Transcrypt
International 460 Voice Scrambling (Properly Decoded) | Download | |
FFT-Style Voice Scrambling | Download | |
Midian TVS-2 Voice Scrambling (standard single-hop) | Download | |
Midian TVS-2 Voice Scrambling (high security double-hop) | Download | |
Selectone ST-25 Rolling Code Sweeping
Scrambler | Download | |
Split-Band Voice Scrambling | Download | |
MX COM
Variable Split Band (VSB) Scrambling | Download | |
Static Voice Inversion | Download | |
Italian Police
Analog Voice Scrambling | Download | |
Rolling Code Speech
Frequency Inversion | Download | |
Icom UT-98 Marine
Radio Voice Scrambler | Download | |
Icom UT-109 LMR Voice
Scrambler | Download | |
Icom UT-110 Rolling-Code Voice Scrambler | Download | |
Motorola ASTRO VSELP | Download | |
sample | Download | |
used on simplex | Download | |
simplex with DES-XL encryption | Download | |
Motorola ASTRO IMBE | Download | |
sample | Download | |
Weak-signal P25 | Download | |
P25 H-DQPSK | Download | |
Harris ProVoice | Download | |
This decoded voice clip | Download | |
alternate sample | Download | |
Harris
Aegis | Download | |
sample | Download | |
ICOM D-STAR | Download | |
ICOM D-STAR vs. FM | Download | |
NXDN | Download | |
DMR | Download | |
TDMA mode | Download | |
FDMA mode | Download | |
Motorola DTR | Download | |
Yaesu C4FM | Download | |
Here is a sample | Download | |
dPMR | Download | |
First-Generation Motorola Control Channel | Download | |
Current Motorola Control Channel (SmartNet) | Download | |
Current Motorola Control Channel
(SmartZone) | Download | |
Motorola SmartZone
OmniLink Control Channel | Download | |
APCO Project-25 Control Channel | Download | |
Motorola 700MHz
P25 Control Channel | Download | |
Harris P25IP
Control Channel Harris P25IP
Control Channel - This is what a Harris-built P25 Phase-I
(C4FM) system sounds like. | Download | |
700MHz test transmission | Download | |
800MHz test transmission | Download | |
Motorola Trunking
Failsoft Tone | Download | |
updated sample | Download | |
Motorola Trunking SOS Alert Tone | Download | |
Harris EDACS
Wideband Control Channel | Download | |
Harris EDACS
Narrowband Control Channel | Download | |
EDACS Scan-Defeat Tone | Download | |
EDACS 'Jingle' | Download | |
Harris OpenSky | Download | |
audio clip | Download | |
Harris OpenSky Scene
of Incident Mode | Download | |
Here | Download | |
LTR Passport Data
Stream | Download | |
MotoTRBO
ConnectPlus Control Channel | Download | |
MotoTRBO CapacityPlus 'Resting
Burst' | Download | |
Kenwood NEXEDGE Narrowband
Control Channel | Download | |
Kenwood NEXEDGE Wideband
Control Channel | Download | |
TETRA | Download | |
audio sample | Download | |
sounds noticeably different | Download | |
sample | Download | |
TETRAPOL | Download | |
sample | Download | |
MPT-1327 | Download | |
Motorola iDEN | Download | |
Motorola SpectraTac Receiver | Download | |
Motorola Trunking Talk Permit
Tone | Download | |
quad format Here is an alternate sample of the tone in
quad format. (Thanks Branson!) | Download | |
Motorola SmartConnect Talk Permit Tone | Download | |
Harris Trunking Talk Permit
Tone | Download | |
Harris Trunking
Encrypted Talk-Permit Tone | Download | |
EF Johnson Trunking Talk
Permit Tone | Download | |
EF Johnson Conventional 'Clear
to Send' Tone | Download | |
Kenwood NX-Series
Talk Permit Tone | Download | |
Kenwood VP-Series Talk
Permit Tone | Download | |
Kenwood PTT Release Tone | Download | |
Kenwood PTT Proceed Tone | Download | |
MotoTRBO Normal Talk Permit
Tone | Download | |
MotoTRBO Encrypted Talk
Permit Tone | Download | |
Motorola DTR Talk Permit
Tone | Download | |
Motorola DLR Talk Permit Tone | Download | |
Harris Emergency Call
Tone | Download | |
Harris Carrier Control
Timer | Download | |
Harris OpenSky Emergency
Call Tone | Download | |
ACARS | Download | |
FLEX-C Paging | Download | |
POCSAG Paging | Download |