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Frequency Domain Tactical Level Voice Scrambler for Hytera TC-780 & TM-800 Radios

Frequency Domain Voice Scrambler for Hytera TC-780 - TM-800 Radios

To Order Call:
1-800-MIDIANS (643-4267) or 520-884-7981


Midian's VS-1200 series is a new Digital Signal Processor (DSP) based Frequency Domain voice scrambler offering multiple levels of voice security. Unlike rolling code voice scramblers the VS-1200 does not require synchronization. The lack of synchronization enables the VS-1200 to be used in virtually any type of two-way radio system including satellite voting systems and high-stability single sideband (SSB) radios.

When used with the CAD-800 additional features are available including:

  • Over the air data encrypted with a unique System ID using Midian's 1200 baud Fleet Management Protocol, FMP-1200™
  • Unit mutes speaker during incoming Midian FMP-1200™ data packets
  • Leading and/or trailing PTT ANI and Emergency ANI (ENI) displays on the CAD-800
  • Selective call for Individual, Group and All Call
  • Querying a unit to transpond back to the CAD-800 when called to see if the radio is working or in range
  • Spy mode where the CAD-800 can eavesdrop on a lost or stolen unit
  • Disable and re-enable (Stun) a lost or stolen unit from the CAD-800


  • Billions of possible programmable Security Keys
  • 3 user-selectable Symmetric Security Keys
  • 4 user programmable security levels
  • Tactical level high security voice scrambler using Digital Signal Processing (DSP) technology
  • Analog audio is digitized and a proprietary method of scrambling using Fast Fourier Tranform (FFT) is applied
  • Automatic scramble/clear mode when using Midian's FMP-1200™ protocol or pilot tone
  • Scramble/clear mode is selectable using the P1 or P2 button on the front cover
  • Excellent recovered audio quality & speaker recognition
  • Does not require synchronization - works well in satellite voting systems
  • Can be used in most HF/VHF/UHF radios with FM or conventional AM modulation
  • Available ANI formats include Midian's FMP-1200™, Motorola's MDC-1200®, Kenwood's FleetSync®, Harris' G-Star™, DTMF & 5-Tone
  • Emergency ANI using a side button (when available on radio)
  • After Emergency ANI the radio's speaker can sound emergency locator tones to aid rescuers in locating users in distress
  • Option available for automatic emergency ID activation by Man Down - Lone Worker sensor
  • Programmable via Midian's KL-4F Programmer
  • Programmable audio levels
  • Plugs into Hytera's TC-780 & TM-800 radios
  • 3 year warranty


Midian's voice scramblers are ideal for use by armed forces, public safety (police, fire, ambulance), fleets (taxi, towing, fishing) and industrial users.


Midian's VS-1200-HYT1 plugs into Hytera's TC-780 portable radio and TM-800 mobile radio.