IFF Mark II was the first operational identification friend or foe system. It was developed by the Royal Air Force just before the start of World War...

new frequencies. Instead of putting Mark I into production, a new IFF Mark II was introduced in early 1940. Mark II had a series of separate tuners inside...

IFF Mark III, also known as ARI.5025 in the UK or SCR.595 in the US, was the Allied Forces standard identification friend or foe (IFF) system from 1943...

IFF Mark X was the NATO standard military identification friend or foe transponder system from the early 1950s until it was slowly replaced by the IFF...

signal, causing interference with other radars. This was addressed in the IFF Mark II with the addition of an automatic gain control system, which amplified...

Leader Sidney Lugg installed an IFF Mark II transponder at the base, tuned to operate on the ASV frequencies. The IFF system broadcast a short pulse of...

to be used in specialized roles into the 1940s, for instance in the IFF Mark II. There was one role where the regenerative system was not suitable, even...

World War II-era IFF Mark III IFF system because the newer IFF Mark X units were not available from US at the time. Marconi received interim Mark X equipment...

although he delayed this until all fighters were equipped with new IFF Mark II systems. On 24 November 1940, Dowding was removed from command. This...

IFF Mark II, which had an automatic gain control and several internal receivers that could respond to any of the popular radars of the era. Mark II was...

attacks on the Burma Road. The British Royal Air Force begins to install IFF Mark II, the first operational identification friend or foe system. October 1...

During World War II, the German Luftwaffe relied on an increasingly diverse array of electronic communications, IFF and RDF equipment as avionics in its...

continue in response to congressional pressure. Suite 8 software includes IFF Mode 5, which modernizes the ability to identify the A-10 to friendly units...

Advanced Data Link (MADL) communication system Link 16 data link SINCGARS An IFF interrogator and transponder HAVE QUICK AM, VHF, UHF AM, and UHF FM Radio...

"Firstborn", "Debut", sometimes FuGe) was an identification friend or foe (IFF) transponder installed in Luftwaffe aircraft starting in 1941 in order to...

Supplies of the VT90 improved and the AW Mark II was dropped after only 15 were produced. By 1943, IFF Mark III was being widely introduced in the US...

two built by 1945 Egon - German bomb-targeting system using the Erstling IFF system and two Freya radar ground stations for bomb-aiming. Elephant Cigar...

companies in which Andreessen Horowitz invests, including Mark Zuckerberg of Facebook and Mark Pincus of Zynga. Andreessen and Horowitz were ranked No....

quotient by an equivalence relation, where g ∼ h {\displaystyle g\sim h} iff g = h n {\displaystyle g=hn} for some n ∈ N {\displaystyle n\in N} . Since...

Oerlikon AA Electronics – Plessey AWS 1 air surveillance radar with on-mounted IFF; 2 × Contraves Seahunter systems (For use with Sea cat, Sea Killer & the...

Mark Reed Levin (/ləˈvɪn/; born September 21, 1957) is an American broadcast news analyst, columnist, lawyer, political commentator, radio personality...

upgraded IFF+ from older identification friend or foe system. To better accommodate the pilots, cockpit floor is also reshaped. The upgraded Tejas Mark 1A will...

signal emissions, as well as a device named Perfectos that tracked German IFF. As a countermeasure, the German night fighters employed Naxos ZR radar signal...

Air-to-Surface Vessel, Mark III, or ASV Mk. III for short, was a surface search radar system used by RAF Coastal Command during World War II. It was a slightly...

aircraft because they did not have their identification, friend or foe (IFF) transponders turned on. At 02:35, the aircraft near the beach fired 40–50...

equipped with the IFF Mk. II system, and by the time the Mk. III radars were being introduced in 1943, many aircraft were equipped with IFF Mk. III. These...

Dennis Mark Prager (/ˈpreɪɡər/; born August 2, 1948) is an American conservative radio talk show host and writer. He is the host of the nationally syndicated...

a simplified, rectangular, adjustable type. Starting in September 1940, IFF equipment was installed. This weighed about 40 lb (18 kg) and could be identified...

equipped with the IFF Mk. II system, which allowed radar operators to determine whether a blip on their screen was a friendly aircraft. IFF was a responder...

or BABS. This was also the band that the earlier IFF Mk. II worked on, and was similar to the new IFF Mk. III bands. For the Mk. VIII radar, it was decided...