The TB-SH 05 Underwater Telephone (SATEL) produced under a technology transfer contract as per the license granted by TÜBİTAK BİLGEM, is a microprocessor-controlled communications system that provides communication between surface and submarine vessels via acoustic waves.

Communication can be established via telephone and telegram. Using the microphone, audio signals can be transmitted at the channel frequency specified by the operator. The audio sent by the corresponding ship is reproduced by SATEL speakers (or headphones), (if any) by the auxiliary unit’s speakers (or headphones), or (if any) the Internal Communication Speakers.

Flexibility for Usage

Part Number: MSTL-0001 / NSN: 5998270708037

SATEL can record audio signals sent or received by the system for 24 hours, and the recorded files can be transferred to any computer via an SD card.  An optional Auxiliary Unit that enables communication with a different point onboard is also available. SATEL comes in sock-insulated freestanding desktop and 19” rack-mountable versions.


SATEL is a NATO-compatible solution that is open to development, including JANUS protocol.

Characteristics of Main Unit of the TB-SH 05 Underwater Telephone

Communication Channels Frequency Range For the Upper Side Band: < 2,000–40,000 Hz

For the Lower Side Band: < 5,000–43,000 Hz

Selection of Modulation Type Lower and Upper Side Bands
Adjustable Number of Channels 3–6 Channels: Channel frequencies according to NATO (8,087.5 Hz), Turkish (3,500 Hz) or user settings, or others that can be added or adjusted by the user.
Emergency Channel Interception Frequency Range 2.000-45.000 Hz
Emergency Channel Interception (Pinger) Frequency The adjustable frequency range of 3–12

  • 5,000 Hz 50 ms signal duration, 10 sec. periods
  • 35,000 Hz 10 ms signal duration, 1 sec. periods
  • User adjustment
  • Emergency Channel (pinger) frequencies added and adjusted by the user
Distance Measurement Modes Fully automatic (TB-SH 05) distance measurement

Semi-automatic (other underwater telephones) distance measurement

Maximum Distance Measurement Range 30.000 m
Characteristics of Telegraph Mode
  • Sending Messages in Morse code: 5–200 word/min.
  • Listening to Messages in Morse Code: 5–200 word/min. automatically adjusted
  • Receiving and sending Turkish characters according to the ISO 8859-9 standard.
  • Transfer messages to the SD/MMC card.
Listening and Recording Audio
  • Format: Digital
  • Time: 24+ hours
  • Maximum Number of Records 1,024 records
  • Transfer to the SD/MMC card in a WAV file format
  • Sort by date and record length in ascending or descending order
  • Listening to audio recordings from all units simultaneously
  • Record demodulated signal received from the microphone when transmitting, and from transducer when listening
Adjustable Factory-Level Power Output 10 W (Near), 50 W (Middle), 100 W (Distant)
Built-in Test Module
  • Online/Offline tests
  • Interface tests
  • Error/data logging (max. 2,048 items)
  • Transferring error/data logs to SD/MMC card in a text file format
Interfaces ASaCS/SONAR Interface, internal communications interface (optional)
Operating Voltage 220 V AC 50 Hz / 115 VAC 50/60 Hz
Maximum Power Required Less than 300 W
Dehumidification Heater Less than 10 W
Applied Standards STANAG 1074, STANAG 1382
Environmental Compatibility
  • Operating Temperature Range: 0°C – 45°C
  • Storage Temperature Range: -40°C – +70°C
  • EMC/EMI Compliance: MIL-STD-461E (RE101, RE102, CE102, RS103, CS101, CS114, CS116, RS101)
  • Humidity MIL-STD-810F, %90RH (45°C)
  • Vibration: MIL-STD-167-1 standard TYPE-I
  • Low and High-Pressure Operation Range: MIL-STD-810F (450 hPa ~ 1.400 hPa)
  • Low and High-Pressure Storage Range: MIL-STD-810F (200 hPa ~ 1.400 hPa)
  • IP Protection IP23

KoçSavunma’s Superior Capabilities that Places
Underwater Telephone
Ahead of the Competition