Newsletter Sign-Up
     Midian Electronics Logo

GPS H250 Handset with Military Grade Frequency Domain Encryption for Manpack Radios

GPS H250 Handset-Military Grade Frequency Domain Encryption


Midian's VS-1200-HS1G is a GPS H250 handset that can connect to many military manpack radios using a U-329 connector. When the GPS H250 handset is keyed it will send the PTT ID (ANI) and the GPS coordinates. The unit also supports sending of an Emergency ID with Location when activated by Man-Down - Lone Worker sensor. Midian's CAD-800 base station controller decodes and displays the PTT ID along with the GPS location and other selectable information shown on a map using Google Earth or Terrain Navigator Pro with no monthly subscriber fees.

The VS-1200-HS1G also supports decode functions such as Polling, Selective Calling, Radio Disable, Radio Enable, Spy (Remote Monitoring) and Emergency Acknowledge. These decode functions are initiated from Midian's CAD-800. Polling allows the dispatcher to request a unit's GPS location. Selective calling can be to call an individual unit, a group of units or all units. If a unit becomes lost or stolen, it can be disabled, so it cannot interfere with the system. If the unit is later recovered the unit can be re-enabled. The Spy function enables the dispatcher to eavesdrop on a unit during an emergency or other condition. If multiple Emergency IDs are transmitted, the dispatcher can stop subsequent Emergency ID transmissions using the Emergency Acknowledge feature.

The military grade frequency domain voice encryption built into the VS-1200-HS1G protects conversations against the most determined listeners. The VS-1200-HS1G supports the selection of up to three different codes from approximately 4 billion codes. Each code can be programmed for one of four encryption levels.


  • 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
  • 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
  • No monthly subscriber fees when using Google Earth or Terrain Navigator Pro with our GPS products
  • GPS latitude, longitude, speed, bearing, time and PTT ID transmitted on leading and/or trailing PTT
  • GPS Location sent with PTT ID, Emergency ID & in response to Polling when used with our CAD-800 Dispatch Display
  • Programmable periodic GPS auto-reporting PTT
  • Available ANI formats include Midian's FMP-1200™, Motorola's MDC-1200®, Kenwood's FleetSync®, Harris' G-Star™, DTMF & 5-Tone
  • Emergency ANI automatically activated by Man-Down - Lone Worker sensor
  • After Emergency ANI the handset's earpiece can sound emergency locator tones to aid rescuers in locating users in distress
  • Programmable via Midian's H250-PROG
  • Programmable audio levels
  • The H250 handset derives power from the center pin on the U-329 connector on many newer Manpack Radios
  • To install on a Manpack Radio twist off existing handset & twist on the HS1/HS1G product in its place
  • 3 year warranty


GPS handsets are a useful tool for keeping track of personnel's location, users in distress and lost or captured radios. Also provides secure voice communications for tactical military operations.


Midian's VS-1200-HS1G works with many military manpack radios with a U-329 connector such as the PRC1077, PRC77, PRC155, PRC25 and more. Different connector configurations are also available for other manpack radios. View compatible manpack radios.

The H250-PROG is used for easy PC programming of Midian's Encrypted H250 Handsets (with or without GPS).