United Kingdom Air Defence A Brief History

Typical East Coast CH Site Chain Home Latticed Masts

Many changes have taken place over the years. From the 1940’s Chain Home network to present day UK Air Defence. CHAIN HOME

Ground Controlled Interception

ROTOR – Post WW2 Type 13 and 14 Radars

BERLIN AIRLIFT

ROTOR ROTOR series Ops Room

CUBAN MISSILE CRISIS

Tripwire Response ICBM Early Warning Console Position

Air Defence Radar Stations Type 84 Radar

Air Defence Radar Stations Type 85 Radar

R3 Ops Rooms

UNI Consoles & Upgrades

UKADR The UK Air Defence Region is a region of air space, around the United Kingdom The region is 2048 square miles covering the United Kingdom and Faroe Islands.

Features of an Air Defence Radar 3 Dimensional Cover. Long Range Detection. Good Clutter Rejection. Secondary Surveillance Radar.

Features of an Air Defence Radar Display Facilities Communication Facilities –Ground to Air –Telephones –Data Links Time & Position - Global Position System. Maintainability - Line Replaceable Unit.

T101 Radar System Antenna

T101 Radar System Radar Management Cabin

T101 Radar System Display Workshop Cabin

T101 Radar System Power Distribution Cabin

T101 Radar System Generator Cabins

T101 Main Features Frequency Band – GHz Bandwidth –400 MHz Frequency Agility –32 Different User Frequencies. Instrumented Range –254 nautical miles

Type 101  Located at:  Portreath  Kirton in Lindsey  1 Air Control Center (1ACC)

UKASACS Air Defence Radar Sites PORTREATH KIRTON IN LINDSEY BUCHAN BENBECULA BRIZLEE WOOD STAXTON WOLD TRIMINGHAM

T101 Main Features Pulse Duration – µs Compressed Pulse Length –400 ns Rotation Speed / Scan Speed –6 rpm Pulse Repetition Interval –854.4 to  s

T101 Main Features Positional Accuracy at 220Km (118nM) –Range48m. –Azimuth.0.22 . –Height.2,400 feet

T101 Main Features Elevation Coverage –0 to 20  with Electronic tilt offset ranging from -2 to . Radio Frequency (RF) Power –200 kW (Spot Frequency). –150 kW (Across the full frequency spread). –5.48 kW Mean (4% duty cycle).

UKASACS Air Defence Radar Sites PORTREATH KIRTON IN LINDSEY BUCHAN BENBECULA BRIZLEE WOOD STAXTON WOLD TRIMINGHAM

Display Facilities Transmit Inhibit Sectors (TIS). Tracking. Intercept Geometry.

Display Facilities Radar Monitoring & Control. UKASACS Link Filter Areas (LFA). Simulation.