Operation Fingent: The United Kingdom “sells” radar to Chile to spy on Argentine flights

Operation Fingent: the radar the British sold to Chile to spy on Argentine movements during the Malvinas War

In a rushed move, Great Britain devised plans to detect the aircraft taking off from Argentina’s mainland air bases — a reminder of how, even in wartime, they were willing to involve neighbouring countries to monitor and undermine Argentine efforts in defending the Malvinas.

Based on Mariano P. Sciaroni || Infobae





As the British fleet set sail toward the Malvinas, the British high command was well aware it would face a serious problem if confronted by Argentina’s Air Force and Naval Aviation. At that time, the Royal Navy was designed to operate in the North Atlantic, under the protection of aerial cover and early warning systems provided both by the British Royal Air Force (RAF) and the U.S. Navy.

Operating outside that zone, with only the limited number of carrier-based aircraft aboard the Invincible and Hermes, the British would lack the advance warning needed to ready their missiles and position interceptors to counter any aerial threat.

Without such anticipation, every Argentine attack would effectively become a surprise, detected only when it was already mere miles from its target — something the British simply could not afford.

In a scramble, they rushed to design plans to detect the aircraft taking off from Argentina’s mainland air bases. The core idea was that no plane should be able to lift off from Argentine soil without being noticed, giving the British fleet at least 45 minutes’ warning of an incoming airstrike — just enough time to call a “Yellow Alert” for planes in the air and prepare for bombs or missiles.

First, special forces (possibly the famed Special Air Service) would be deployed on the continent to report movements at the Río Grande, Río Gallegos, and Comodoro Rivadavia bases (this fell under the so-called “Operation Shutter”; the commandos were only present from late May to early June, and it remains a mystery how they got there or how they left, as details on the matter are still classified).



Naval Station “Almirante Hermes Quijada” in Río Grande, Tierra del Fuego, during the war

They also considered that nuclear submarines would approach the Argentine coast to report on aerial movements, detecting them either through their periscopes or with electronic surveillance equipment.

Finally, arrangements were made with the “friendly” Chilean Air Force, whose Thomson-CSF radar located near Punta Arenas would provide alerts about takeoffs from Ushuaia, Río Grande, and Río Gallegos.

However, there remained a large gap: the entire province of Chubut and the Comodoro Rivadavia base were beyond radar coverage. That was a serious problem.

Luckily for the British, Wing Commander Sidney Edwards, the Royal Air Force’s delegate in Chile, had already secured from General Fernando Matthei, commander of the Chilean Air Force, a “blank check” to move forward in solving such inconveniences.

But the Chileans had no radar stationed there — nor did they have a mobile radar system.

To overcome this, the British had to urgently sell them a radar. The operation was quickly agreed upon: the price was set at under one British pound (and, for the same token, they also received six Hawker Hunter fighter jets, three Canberra bombers, and anti-aircraft missiles). An entire air force for less than 60 Argentine pesos at today’s exchange rate — a bargain, to put it mildly.

With political approval secured, the military phase began moving. Thus, the so-called “Operation Fingent” was designed and took shape. It was decided that the radar to be transferred (or rather, sold) would be a Marconi S259 transportable unit, part of the British Royal Air Force’s Mobile Reserve.


A S259 radar operating at RAF Saxa Vord in the 70s in the Shetland Islands, North Scotland. Possibly this very same radar has been sold to Chile in 1982,

The radar would be accompanied by a so-called “sales team” — which, in reality, was nothing more than British Royal Air Force military personnel dressed in civilian clothes, tasked with operating the radar and training the supposed new “owners.”

This “sales team” was made up of four officers and seven non-commissioned officers, who would carry no weapons and would formally be working under the Chilean armed forces. They were instructed to buy warm civilian clothing and ensure their passports were in order. They were also informed that their mission was absolutely secret and that they were to behave at all times as civilian contractors.

They were forbidden from speaking about this matter to anyone — neither in Great Britain nor in Chile.

The deployment location was ultimately decided by General Matthei: it would be set up in Balmaceda, positioned at the latitude of Comodoro Rivadavia, and would be protected by the Chilean Army. A strategic spot, ideal for monitoring Argentine movements.

With the mission in place, on May 5, 1982, a Boeing 747 from the Flying Tigers airline departed RAF Brize Norton (not far from London), loaded with the radar equipment and personnel, heading for Santiago de Chile. The route included a stop in San Juan, Puerto Rico, making it a long journey.

Upon landing, a military transport plane — a C-130 Hercules — appeared to carry them to their final destination. The issue was that this aircraft bore camouflage very similar to British military planes, and painted on its fuselage were the words FUERZA AREA (not AÉREA) DE CHILE — in short, it was a British plane.

A British plane, carrying British military personnel and British radar, to just a few kilometers from the Argentine border.

A Chilean C-130 Hercules and another from the British Royal Air Force (RAF) wait on the tarmac, photographed from an RAF VC-10. The photo was taken on April 24, 1982, on Easter Island (Chile).

Soon after, the radar reached its final destination and was swiftly installed. The British put it to good use, while Chilean troops guarded the area to prevent any issues.

The information gathered by the radar was securely transmitted to the headquarters of the Chilean Air Force’s intelligence service. From there, a special British team operating a satellite communication system would relay the data to their fleet.

It was a well-oiled system that ultimately worked very effectively — and, as mentioned earlier, it was complemented by reports from ground commandos, another radar, and finally the nuclear submarines near the coast (for example, the submarine HMS Valiant, operating near Río Grande, alone provided 300 alerts of aircraft in the air).

When it was all over, as General Matthei later explained, “we kept the radars, the missiles, and the planes, and they were satisfied because they received the information they needed on time. The deal was over, and Sidney Edwards was dismissed the next day.”

“Argentina has its back well covered,” said Sergio Onofre Jarpa, Chile’s ambassador in Buenos Aires, not long before. A peculiar statement, considering that right in the middle of Argentina’s back, a British radar was operating — helping foreign forces monitor and strike at Argentine defenses in the Malvinas.