Homepage
Crypto
Spy radio
Burst encoders
Intercept
Covert
Index
Glossary
Bugs
Cameras
Recorders
Radio
Beacons
Microphones
Earpieces
Optics
Concealments
Dead drops
Tools
Stories
Software
Radio
PC
Telex
Telephones
People
Agencies
Manufacturers
DONATE
Publications
Standards
For sale
Kits
Shop
News
Events
Wanted
Contact
About us
Links
 
 
 
  		Click for homepage
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 Limited, 15 May 1994. Issue 1.
Further information
Any links shown in red are currently unavailable. If you like the information on this website, why not make a donation?
© Crypto Museum. Created: Saturday 03 January 2026. Last changed: Saturday, 03 January 2026 - 22:00 CET.
Click for homepage