PT790Ex TETRA Ex Intrinsically Safe Portable Radio


The Hytera PT790Ex is the worlds first TETRA radio terminal that meets the extra stringent ‘ia’ intrinsic safety rating. This means the PT790Ex meets the very highest intrinsic safety rating that can be imposed on an i.s product!

The ‘ia’ rating means the PT790Ex can be used in hazardous areas where an explosive atmosphere containing both air and combustible gases, vapours or mists are constantly present. In addition the PT790Ex is IP67 rated for submersibility and its rugged construction exceeding MIL STDS 810F/G makes this TETRA radio terminal the go to communication device for professional users.

Safety of the user is paramount in the design with an integrated man down and lone worker alarm as well as accurate positioning via the built in GPS receiver.

The Hytera PT790Ex offers the full suite of TETRA radio voice and data services whilst meeting the very highest intrinsic safety standards.


PT790Ex TETRA Ex Intrinsically Safe Portable Radio Datasheet

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Standard features include:-

Approved to Ex: II 1G Ex ia IIC T4; II 1D Ex ia IIIC T120c IP67 and I M1 Ex ia

Operating mode –  Trunked radio mode (TMO): communication via the TETRA radio network (semi-duplex and duplex mode) Direct mode (DMO): direct communication between the radios (semi-duplex)

Voice services –  Group calls –  Group call with defined priority (incl. pre-emptive priority);  Dynamic Group Number Assignment (DGNA); Broadcast call (group, TMO);  Talking party indication (TPI);  Late Entry Open group call;  Group scan with priorities

Individual call  Individual call half-duplex and individual call duplex (TMO);  Individual call with defined priority (also pre-emptive priority);  Calling Line Identification Presentation (CLIP)

Emergency call –  Emergency call to selected or pre-defined group;  Emergency call as individual call and as call to a telephone network (PSTN/PABX); Emergency call microphone & cyclic change of permission to talk during the emergency call;  Silent alarm (TMO)

Calls to telephone networks – (PSTN / PABX) (TMO) PSTN / PABX individual call, full-duplex; PSTN / PABX individual call, half-duplex;  DTMF Calling Line Identification Presentation (CLIP)

Additional call services – Callout; Gateway call (DMO) / repeater call (DMO)

Security services  – Authentication (by system and mutual);  Air interface encryption (TEA1, TEA2 *, TEA3, TEA4);  End-to-end encryption (E2EE) by software (AES128 / AES256), by SIM card, encryption of voice and SDS;  Access control with PIN / PUK code;  TETRA security class 1, 2, 3: non-encrypted, static  encryption (SCK), dynamic encryption (CCK/DCK);   Key distribution via air interface (OTAR);  Static encryption in DMO mode (SCK);  Attachment/ deactivation via air interface (Enable / Disable);  Ambience Listening

Security functions for user –  Emergency button;  Lone worker function /man-down alarm;  Tilt alarm;  Silent alarm;  Call barring;  Programmable key lock (individual keys can be excluded from the lock);  Configuration protection / configuration password;  TX Inhibit (TXI)

Data / message services – Short data service (SDS) – types 1, 2, 3, 4 and TL;   Concatenated SDS (Long SDS) and Flash SDS;  Status message/ text message;   Notification of new messages during a call;  Packet data service (packet data, single-slot, multi-slot);  Java™ platform MIDP 2.0, WAP

Radio Features – 20 programmable keys;  4-way navigation key;  Separate rotary switches for call groups and audio volume;  Call log: Missed/answered calls, dialed numbers;  Flexible dialing (e.g. direct dialing, redialing, dialing lists etc.);  Special microphone  upper microphone for half-duplex calls  lower microphone for duplex calls; Adjustable screen brightness & screensaver; International language support;  Positioning according to ETSI LIP or NMEA protocol;  Completely integrated GPS/GLONASS/Beidou receiver;  Completely programmable position updating;   Display of direction and position of other call parties;  Transmission of position data on emergency call;  Integrated BT;  Wireless BT connection to different audio and PTT devices;    Automatic search and detection of compatible BT devices; PEI interface; Clock synchronization via GPS / SAT, radio network or local time; Energy saving mode; Automatic cell re-selection without call interruption (handover); Programming several selectable network identifications (TMO, DMO); Programming several selectable PSTN / PABX gateways; Customizable alarm tones;  Radio User Assignment (RUA);  Over The Air Interface (OTAP)

Standard package includes radio body, antenna (GPS integrated), MCU Rapid-Rate Charger CH10A07, Universal Standard Switching Power Adapter PS1044, Intrinsically Safe Lithium-Ion Battery (1800mAh) BL1813-Ex, Belt Clip BC19





Additional information

Weight 1.000 kg

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Freq Band

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