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Micromill
Micromill Electronics Ltd.
Formerly known as Datacom Designs Ltd.

Micromill Electronics Ltd. was a developer and manufacturer of high-end radio and surveillance equipment for the Ministry of Defence (MoD) and the intelligence and law enforcement com­mu­ni­ty, foun­ded in 1978 in Emsworth (UK). Micromill was a member of The Defence Manufacturers Association (DMA), and later of the Chelton group of companies. Outside the UK, Micromill's pro­ducts were marketed by Griffiths Communications Ltd (later: Grifftech Systems) in High Wycombe.


According to the company's first website in 2002, it was established in 1978 [1], probably as a Sole Trader under the name Datacom Designs. It was registered as Datacom Designs Limited (DDL) on 25 October 1979. On 27 Sep­tem­ber 1984, it was renamed Micromill Electronics Ltd. In 2001, Micromill was acqui­red by Bri­tish aerospace manufacturer Cobham, but kept trading under its own name. In 2002, it reported an annual turnover in excess of GBP 3 million with a staff of 60+ people [2]. On 5 Oc­to­ber 2011, Micromill became part of Cobham subsidiary Cobham TCS.

In 2016, Cobham TCS formed a new subsidiary — Domo Tactical Com­mu­ni­ca­tions (DTC) — in which the former companies Spectronics Denmark A/S and Micromill – both specialised in covert surveillance – were merged. In 2018, the branch of DTC that was involved in tracking mobile tar­gets, was transferred to MetOcean Telematics, after which the name Micromill disappeared [3].

Micromill products on this website
2W RF tracking beacon
Handheld Radio Direction Finder
Known Datacom/Micromill products
  • M7002
    Money Package Transmitter
  • M7013
    Directional Power Meter
  • M7014
    Transmitter antenna matching unit (for M7062 and M7063)
  • M7022
    Charger
  • M7041
    Battery and power saving unit
  • M7042
    Commandable tracking beacon
  • M7044A
    1W trac king beacon
  • M7045
    250 mW tracking beacon with magnets and power saving unit
  • M7061
    Command Unit
  • M7062
    2W Tracking beacon
  • M7063
    300 mW tracking beacon
  • M7080
    Magnetic base for M7044 or M7041
  • M7101
    Target/vehicle tracking system in briefcase
  • M7101/10
    10 channel mobile tracking receiver
  • M7101AA
    Ski Rack Antenna
  • M7101A/S
    New Antenna Fast Rack
  • M7112
    Receiver Display Unit
  • M7113
    Receiver Display Unit
  • M7114
    Slave Receiver Display Unit
  • M7117
    Hand held field strength receiver/locator
  • M7119
    Command and Display Unit
  • M7120A
    Spare antenna cable set
  • M7131
    Mobile Tracking Receiver
  • M7142
    Handheld radio direction finder
  • M7601
    Remote Control Unit with Antenna
  • M7611
    Beacon Command Unit
  • M7704
    1W beacon with antenna matching unit
  • M7704A
    Commandable 1W beacon with antenna matching unit
  • M7706A
    250 mW Commandable Beacon with internal battery
  • M7710
    1W Commandable Beacon
  • M7906
    Flat (covert) direction finding antenna
  • M7917
    Antenna for M7710
  • M7927
    Battery pack for M7710
  • M7928
    Magnetic base for M7710
  • M7929
    DC link cable
  • M7931
    DC I/P cable
  • M7932
    Auxiliary Cable
  • M7933
    Carrying Case (for M7710)
Former addresses
  • Micromill Electronics
    The Old Mill
    Queen Street
    Emsworth, Hants PO10 7BL (UK)
    T: +44 (0)2434-6263

  • Micromill Electronics Ltd.
    Waterberry Dr Pegasus House
    Waterberry Drive
    Waterlooville, PO7 7XX (UK)
    T: +44 (0)23 9264376

  • Micromill Electronics Ltd. (2002)
    Leydene House
    Waterlooville, PO7 7XX (UK)
    T: +44 (0)2392-366600
Company names
  • 1978
    Datcom Designs (Sole Trader)
  • 1979-10-25
    Datacom Designs Ltd.
  • 1984-09-27
    Micromill Electronics Ltd. (MME)
  • 2011-10-05
    Cobham TCS Ltd.
  • 2016-02-01
    Domo Tactical Communications Ltd. (DTC)
Documentation
  1. Beacon Control Systems
    Brochure about M7601 M7704A and M7114. 6 pages.
    Griffiths Communications Limited. No date (est. 1986).

  2. Target Tracking System
    Brochure about M7101 tracking receiver. 4 pages.
    Griffiths Communications Limited. No date (est. 1986).

  3. Target Tracking System - Accessories
    Leaflet about M7013 and M7041. 1 page.
    Griffiths Communications Limited. No date (est. 1986).

  4. Target Tracking Transmitter and Accessories
    Brochure about M7044A, M7045, M7062, M7063, M7704A, M7706, M7002,
    M7014, M7113, M7013 and M7041. 6 pages.
    Grifftech Systems. No date (est. 1988)

  5. Beacon (Target Transmitter) Control Systems
    Brochure about M7601, M7704A, M7045, M7114 and M7706A. 4 pages.
    Grifftech Systems. No date (est. 1988)

  6. Grifftech Pricelist 1988
    19 July 1988 (Addressee removed).
References
  1. Micromill website, Homepage
    29 November 2002.

  2. Micromill website, Capabilities
    8 January 2002.

  3. Ears and eyes, Domo Tactical Communications
    Visited 19 December 2025.
Further information
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© Crypto Museum. Created: Friday 19 December 2025. Last changed: Saturday, 21 March 2026 - 08:54 CET.
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