Marconi Instruments

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title: "Marconi Instruments" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["1936-establishments-in-england", "1998-disestablishments-in-england", "british-companies-established-in-1936", "electronics-companies-established-in-1941", "technology-companies-established-in-1941", "technology-companies-disestablished-in-1998", "electronics-companies-of-the-united-kingdom", "defunct-technology-companies-of-the-united-kingdom", "buildings-and-structures-in-st-albans", "general-electric-company", "history-of-st-albans", "history-of-colchester", "companies-based-in-stevenage"] topic_path: "engineering" source: "https://en.wikipedia.org/wiki/Marconi_Instruments" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::data[format=table title="Infobox company"]

Field	Value
name	Marconi Instruments Limited
logo	[[File:GEC Marconi logo.svg
type	Public limited company
fate	Sold to IFR Systems Inc. in 1998, which was then acquired by Aeroflex in 2002.
key_people	R. E. Burnett (managing director)
foundation	1936
defunct	1998
location	St Albans, England, UK
successor	IFR Systems
Aeroflex
industry	Engineering
products	Electronics
::

Marconi Instruments Limited (MI) was a British company, one of the Marconi group of companies, formerly part of GEC. Originally formed in 1936, there was a buyout of Marconi-Ekco Instruments to form the company Marconi Instruments in 1941.

The company was based in St Albans, Colchester, and Stevenage (where it eventually consolidated), all in southern England. Prior to the consolidation in Stevenage, its main site was at Longacres on the eastern outskirts of St Albans, where it was the largest employer. There were four other sites, one at Hedley Road, one on Hatfield Road, St Albans (Fleetville Works), one on the Donibristle Industrial Estate in Fife, Scotland and one at Luton Airport, Luton.

The company produced electronic test and measurement equipment and systems, including automatic test equipment. It was known for its extensive range of signal generators, from audio up to microwave frequencies. It also made oscilloscopes, voltmeters, spectrum analysers, frequency counters, function generators, component (LCR) bridges, impedance analysers, power supplies, distortion analysers, moisture meters and logic analysers. The company operated an approved calibration and metrology laboratory for the electronics industry.

Marconi Instruments was sold to IFR Systems Inc. in 1998, itself acquired by Aeroflex in 2002. The name is no longer used.

Companies with "Marconi" in their name can trace their ultimate origins, through mergers and takeovers, to The Marconi Company Ltd., founded by Guglielmo Marconi in 1897 as The Wireless Telegraph & Signal Company.

References

"Marconi Instruments Limited". [[Google Sites]].
"Marconi Instruments". [[Grace's Guide]] to British Industrial History.
(27 June 1974). "Company Profile: Best ever year for Marconi Instruments?". Electronics & Power.
(1941). "Marconi-Ekco Instruments".
Bateman, Aaron. (5 August 2004). "Memories of working at Marconi". St Albans & Harpenden Review.
Beck, Harold. (1962). "1962 Diary & Notes". www.haroldbeck.org.uk.
(1 May 1997). "A GSM Digital Radio Communications Test Set". Microwave Journal.
"Marconi Instruments". [[eBay]].
"Marconi Test Instruments". [[Yahoo]].
"History of the radio manufacturer Marconi Instruments Ltd., St. Albans". Radiomuseum.
[https://web.archive.org/web/20040827075838/http://www.marconi.com/Home/press_office/News%20%26%20Events/News%20Archive/1998/February/GEC%20Sells%20Marconi%20Instruments GEC Sells Marconi Instruments], [[Archive.org]], 1998.

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