Tait's comprehensive encryption solutions protect your communications against unauthorised listeners - whether you're a small company defending your competitive advantage or a government agency needing to keep vital information secure.

Tait offers a range of third-party encryption technologies that can be fitted to Tait Orca 5000 series portables, TM8000* mobile radios and T2000 mobile radios - either factory-fitted from new, or as an upgrade to existing equipment. We can also provide consultation and system design to ensure complete integration of encryption technology into your system.

Encryption is an important function of an organisation's entire communications system. While encryption hardware is generally fitted in mobile and portable radios, where communication security is most critical, this technology can also be integrated at system level.

* TM8000 radios have voice inversion scrambling as standard.

Types of Tait Encryption

  • Voice inversion scrambling: protects against casual listeners
  • Rolling/Hopping code scrambling: protects against more determined listeners
  • Digital encryption: fully digitised, high security encryption solution

Voice Inversion Scrambling

This technology inverts the audio spectrum (swaps low frequencies for high) around a specific frequency. The inversion frequency can be adjusted to match different suppliers' units.

Voice inversion scrambling provides the lowest level of security at the lowest cost. T2000 mobile radios and Tait Orca 5000 portable radios use Midian encryption modules for this type of encryption, while TM8000 mobile radios have voice inversion scrambling as standard in the radio firmware.

Visit Midian's website for details of their modules developed specifically for Tait radio products.

Rolling/Hopping Code Scrambling

Rolling/hopping code scrambling requires synchronisation of the inversion frequency between sender and receiver. It inverts the audio around a changing frequency.

The level of security depends on how often, and how randomly the inversion frequency changes. Random codes to specify the inversion frequency provides a high level of security control, as key generation in digital data security yields a large number of codes.

Each code is sufficiently distinctive as to be indecipherable by anyone using a different code. Up to 16 different codes are available.

Both Midian and Transcrypt modules provide this type of encryption in Tait radios and infrastructure products.

Visit the Midian and Transcrypt websites for details of their modules.

Digital Encryption

Digital encryption delivers high level, fully digitised communication security, and can be provided with any Tait radio. Tait uses a Telsy digital encryption solution, which provides a fully-digital radio encryption unit with encryption, vocoder and modem in a single module.

The Tait digital encryption solution operates on VHF/UHF radio networks, with standard or reduced (12.5kHz) channel spacing, in simplex or semi-duplex. It is suitable for conventional or trunked networks.

Read the Telsy TCX01c Crypto Module brochure [PDF, 130KB] for details.