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Micromill
RDF
  
M7710
Commandable RF tracking beacon - this page is a stub

M7710 is a remote controlled covert RF transmitter, also known as a tracking beacon, developed around 1994 by Micromill Electronics Ltd. in Emsworth (later: Waterberry) (UK). It was used by law en­force­ment and intelligence services for tracking vehicles, persons or goods under surveillance.

Modes of operation
  • Command mode
  • Movement trigger mode
  • External trigger mode
  • Inactive mode
  • Stand-alone mode
Specifications
  • Device
    Tracking beacon
  • Purpose
    Tracking of vehicles, persons or goods
  • Principle
    RF pulse
  • Model
    M7710
  • Manufacturer
    Micromill Electronics Ltd.
  • Year
    1994
  • Country
    UK
  • Frequency
    27 — 175 MHz 1
  • Harmonics
    < -30 dBm
  • Modulation
    FSK (ID and status)
  • Identification
    0 — 63
  • Output
    1 W
  • Impedance
    50Ω
  • Receiver
    > -112 dBm, frequency withing 5% of TX frequency
  • Commands
    see below
  • Antenna
    SMC, M7914 matched whip
  • Power
    +6V to +16V DC
  • Current
    500 mA peak
  • Battery
    external, see below
  • Temperature
    -10°C to +50°C
  • Storage
    -20°C to +70°C
  • Sealing
    IP65
  • Dimensions
    123 × 31 × 34 mm
  • Weight
    160 g
  1. To be specified when ordering.
Accessories
  • M7914
    Antenna
  • M7927
    External battery pack
  • M7928
    Magnet Tray Assembly
  • M7929
    DC Link Cable
  • M7931
    DC I/P Cable
  • M7932
    Auxiliary power cable (6-16 V/DC, 500 mA)
  • M7933
    Carrying case
Releated equipment
  • M7119
    Command and Display Unit
  • M7131
    Mobile Tracking Receiver
  • M7611
    Beacon Command Unit
Battery pack   M7927
  • Model
    M7927
  • Power
    6 V
  • Cells
    2 × Saft LSH14 (Lithium)
  • Dimensions
    123 × 31 × 31 mm
  • Weight
    205 g (batteries included)
Commands
  • TX on/off
  • Pluse on/off
  • Movement trigger
  • Relay on/off
Documentation
  1. Commandable Beacon M7710 - Operator Handbook
    Micromill Electronics Ltd., 15 May 1994. Issue 1.

  2. Commandable Beacon M7710 - Circuit diagrams
    Micromill Electronics Ltd., 16 March 1993 — 6 Feb 2096. Issue 3.
Further information
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© Crypto Museum. Created: Saturday 03 January 2026. Last changed: Friday, 20 March 2026 - 11:13 CET.
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