The Export of Goods (Control) (Amendment No. 2) Order 1990

IL1558 Electronic vacuum tubes (valves) and cathodes, the following: and other components specially designed for those tubes — (a) Tubes in which space charge control is utilized as the primary functional parameter, including triodes and tetrodes, the following — (1) tubes rated for continuous wave operation having either of the following characteristics — (A) above 4 GHz at maximum rated anode dissipationC (B) within the frequency range 0.3 to 4 GHz and for which, under any condition of cooling, the product of the maximum rated anode dissipation (expressed in kW) and the square of the maximum frequency (expressed in GHz) at the maximum rated anode dissipation is greater than 10, except tubes specially designed for television transmitters operating in the frequency range of 0.47 to 0.96 GHz and rated for operation without a grid current, for which the product of the rated anode dissipation (expressed in kW) and the square of the maximum frequency (expressed in GHz) may reach 20.C (2) tubes, rated only for pulse operation, having either of the following characteristics — (A) above 1 GHz, with maximum peak pulse output power greater than 45 kW C (B) between 0.3 and 1 GHz and for which, under any condition of cooling, the product of the peak pulse output power (expressed in kW) and the square of the maximum frequency (expressed in GHz) exceeds 45C (3) tubes specially designed for use as pulse modulators for radar or similar applications, having a peak anode voltage rating of 100 kV or more, or rated for a peak pulse power of 20 MW or moreC except — - tubes specially designed for civil telecasting according to CCIR or OIR standards and specially designed components therefor. - The above exception does not apply to technological documents the information in which includes information relating to goods excluded by the above exception. Tubes which utilise interaction between a beam of electrons and microwave elements and in which the electrons travelin a direction perpendicular to the applied magnetic field, including magnetrons, cross-field amplifier tubes and cross-field oscillator tubesC except — fixed frequency and tunable pulsed magnetrons and crossed-field amplifier tubes which are in normal civil use, the following — (1) magnetrons designed to operate at frequencies below 3 GHz with a maximum rated peak output power of 5 MW or less, or between 3 to 12 GHz with the product of the maximum rated peak output power (expressed in kW) and the frequency (expressed in GHz) less than 4,200 and a frequency tuning time of more than 100 ms; (2) crossed-field amplifier tubes designed to operate at frequencies below 4 GHz with a maximum rated average output power of 1.2 kW or less, a bandwidth of 200 MHz or less and a gain of less than 15 dB; (ii) fixed frequency continuous wave magnetrons designed for medical use or for industrial heating or cooking purposes operating at a frequency of 2.375 GHz + 0.05 GHz or 2.45 GHz + 0.05 GHz with a maximum rated output power not exceeding 6 kW or, at a frequency lower than 1 GHz, with a maximum rated output power not exceeding 35 kW; (iii) magnetrons and klystrons specially designed for particle accelerators for medical radiation therapy, having all of the following characteristics — (1) capable of operation only at a frequency of 3,000 MHz +/− 15 MHz or at a frequency of 2,856 MHz +/− 15 MHz; (2) not capable of being tuned mechanically or electronically outside the above bands; (3) mechanically tuned within the above bands; and (4) having a peak output power not exceeding 10 MW and an average output power not exceeding 15 kW. - The exception in paragraph (iii) above does not apply to technological documents the information in which includes information relating to goods excluded in paragraph (iii). Tubes which utilise interaction between a beam of electrons and microwave elements or cavities and in which the electrons travel in a direction parallel to the applied magnetic field (eg klystrons or travelling wave tubes)C except — continuous wave tubes having all of the following characteristics — (1) designed for use in civil ground communication; (2) instantaneous bandwidth tubes with any of the following sets of characteristics — (a) tubes with — (1) an instantaneous bandwidth of half an octave or less (ie the highest operating frequency does not exceed 1.5 times the lowest operating frequency); (2) the product of the rated output power (expressed in kW) and the maximum operating frequency (expressed in GHz) does not exceed 0.3; (b) tubes which — (1) have an instantaneous bandwidth of 10% or less (ie the highest operating frequency does not exceed 1.1 times the lowest operating frequency); (2) the product of the rated output power (expressed in kW) and the maximum operating frequency (expressed in GHz) does not exceed 3; (3) operate in standard international telecommunications bands; (c) tubes which — (1) have an instantaneous bandwidth of 3% or less (ie the highest operating frequency does not exceed 1.03 times the lowest operating frequency) (2) the product of the rated output power (expressed in kW) and the maximum operating frequency (expressed in GHz) does not exceed 25; and (3) operate in standard international telecommunications bands; (3) an operating frequency no higher than 20 GHz; (4) no multiple grid including shadow grid electron guns; (5) collectors with no more than two depressed stages; (ii) pulsed tubes, having all of the following characteristics — (1) for civil applications; (2) an instantaneous bandwidth of half an octave or less, (ie the highest operating frequency is not higher than 1.5 times the lowest operating frequency); (3) collectors with no more than two depressed stages; (4) having either of the following sets of characteristics — (a) (1) a peak saturated output power not exceeding 1 kW; (2) an average output power not exceeding 40 W; and (3) operating frequency not exceeding 10 GHz; or (b) (1) a peak saturated output power not exceeding 100 W; (2) an average output power not exceeding 20 W; and (3) operating frequency between 10 and 20 GHz; (iii) fixed frequency pulsed tubes, the following — (A) for civil applications; (B) operating at frequencies below 3.5 GHz; (C) having a peak output power of 1.6 MW or less; and (D) having an operating bandwidth of less than 1%; (iv) tubes, the following — (A) used as fixed frequency or voltage tunable oscillator tubes; (B) designed to operate at frequencies below 20 GHz; and (C) having a maximum output power of less than 3 W; (v) tubes specially designed for civil telecasting according to CCIR or OIR standards, and specially designed components therefor; (vi) magnetrons and klystrons specially designed for particle accelerators for medical radiation therapy, having all of the following characteristics — (1) capable of operation at a frequency of 3,000 MHz +/− 15 MHz or at a frequency of 2,856 +/− 15 MHz; (2) not capable of being tuned mechanically or electronically outside the above bands; (3) mechanically tuned within the above bands; and (4) having a peak output power not exceeding 10 MW and an average output power not exceeding 15 kW. - The exceptions in paragraphs (v) and (vi) above do not apply to technological documents the information in which includes information relating to goods excluded in paragraphs (v) and (vi). (d) Tubes which utilize interaction between an electron beam and microwave elements or cavities but do not require a magnetic field to control or focus the electron beam, except low power reflex oscillator klystrons designed to operate at frequencies below 20 GHz and at a maximum output power of less than 3 WC (e) Tubes which utilize interaction between a beam of electrons and microwave elements or cavities in which the electrons drift in a direction parallel to the applied magnetic field but also requirefor their operation a large component of velocity transverse to the direction of the applied magnetic field, including gyrotrons, ubitrons and peniotrons except gyrotron oscillatorsC (f) Tubes designed to withstand on any axis an acceleration of short duration (shock) greater than 1,000 gC (g) Tubes designed for operation in ambient temperatures exceeding 437KC (h) Tubes of the type referred to in head (c), (d) or (e) above, which are designed to operate with no filament or cathodeheating element as indicated by the absence of heating supply connections C (i) Tubes which utilize a modulated beam of electrons striking one or more semiconductor diodes to provide power gainC (j) Cathodes for electronic vacuum tubes, the following — (1) Specially designed for tubes specified in heads (a) to (i)C (2) Impregnated cathodes capable of producing a current density exceeding 0.5 A/cm2 at rated operating conditionsC In this entry — - “frequency tuning time” means the time required to change the operating frequency from a starting frequency, through the maximum frequency, through the minimum frequency, and return to the starting frequency, ie one complete tuning cycle. frequency tuning time: T =1fo: dither rate.2fo

• (xxv) entry IL1560 shall be deleted;

• (j) in Group 3G of Part II of Schedule 1 —

• (i) in entry IL1566 (Software and technology therefor) in exception (2) to the entry, the words “Part A of” shall be deleted;

• (ii) for entry IL1574 there shall be substituted the following entry:

IL1574 Electronic devices, circuits and systems containing components manufactured from superconductive materials, and specially designed for operation at temperatures below the critical temperature of at least one of their superconductive constituents performing functions such as the followingC (1) electromagnetic sensing and amplification; (2) current switching; (3) frequency selection; (4) electromagnetic energy storage at resonant frequencies above 1 MHz. This entry includes Josephson-effect devices and superconducting quantum interference devices (squids). In this entry — - “superconductive” refers to materials (ie metals, alloys or compounds) which can lose all electrical resistance (ie which can attain infinite electrical conductivity and carry very large electrical currents without Joule heating). - the superconductive state of a material is individually characterised by a critical temperature, a critical magnetic field, which is a function of temperature, and a critical current density, which is a function of both magnetic field and temperature; - the “critical temperature” (sometimes referred to as the transition temperature) of a specific superconductive materialsmeans the temperature at which the material loses all resistance to the flow of direct current.

• (iii) for entry IL1584 there shall be substituted the following entry:

IL1584 Oscilloscopes (including waveform recorders or waveform digitisers) transient recorders and plug-in modules, the following: and specially designed components (including amplifiers, preamplifiers and sampling devices) therefor — (a) Analogue oscilloscopes or plug-in modules having any of the following characteristics — (1) non-modular oscilloscopes having a bandwidth exceeding 250 MHzC (2) modular oscilloscope systems having either of the following — (A) mainframes with a bandwidth exceeding 250 MHzC (B) plug-in modules with an individual bandwidth exceeding 400 MHzC (3) having a horizontal sweep speed faster than 1 ns per cm with an accuracy (linearity) better (less) than 2 percent measured over a 1 ns time intervalC (4) containing or designed for use with cathode-ray tubes specified in head (c) of entry IL1541 in Group 3FC (b) Digital oscilloscopes or transient recorders with either of the following characteristics — (1) a digitising rate exceeding 50 million samples per second for measurement of single-shot phenomenaC (2) a bandwidth exceeding 4 GHz for measurement of recurring phenomenaC In this entry — - “bandwidth” means the band of frequencies over which the displayed signal does not fall by more than 3dB (ie below 70.7per cent) of that at the maximum point measured with a constant input voltage; - “mainframe” means equipment which includes a display, power supply and means of accepting and utilising the plug-in modules.

• (iv) for entry IL1585 there shall be substituted the following entry:

IL1585 Cameras, components and photographic recording media therefor, the following — (a) High speed cinema recording cameras and equipment, the following — (1) Cameras in which the film is continuously advanced throughout the recording period, and which are capable of recording at framing rates exceeding 13,150 frames per second, using any camera and film combination from the standard 8mm to the 90mm size inclusiveC (2) Special optical or electronic devices which supplement, replace or are interchangeable with standard camera components for the purpose of increasing the number of frames per secondC (b) Mechanical high speed cameras in which the film does not move, and which are capable of recording at rates exceeding 1,000,000 frames per second for the full framing height of standard 35mm wide photographic film, or at proportionately higher rates for lesser frame heights, or at proportionately lower rates for greater frame heightsC (c) Cameras incorporating electron tubes specified in entry IL1555 in Group 3F, except television or video cameras specially designed for television broadcasting useC (d) Mechanical or electronic streak cameras having writing speeds of 10 mm/microsecond and aboveC (e) Electronic framing cameras having a speed exceeding 106 frames per secondC (f) Video cameras incorporating solid state sensors, having any of the following characteristics — (1) more than 4 x 106 active pixels per solid state array for monochrome (black and white) camerasC (2) more than 4 x 106 active pixels per solid state array for colour cameras incorporating three solid state arraysC (3) more than 12 x 106 active pixels for solid state array colour cameras incorporating one solid state arrayC (g) Electronic cameras having both of the following characteristicsC (1) an electronic shutter speed (gating capability) of less than 10 microseconds per full frame; (2) a read out time allowing a framing rate of more than 125 full frames per second; (h) Camera shutters with speeds of 50 ns or less per operation, and specialised parts and accessories thereforC (i) Film, the following — (1) having a speed of ISO 10,000 (or its equivalent) or betterC (2) colour film having a spectral sensitivity extending beyond 7,200 Angstroms or below 2,000 AngstromsC (j) Cameras incorporating linear detector arrays exceeding a size of 4,096 elements per array and mechanical scanning in one directionC In this entry - “active pixel” is a minimum element of the solid state array (sensor) which has a photoelectric transfer function and which is exposed to the light.

• (v) in entry, IL 1587 (Quartz crystals and assemblies thereof), in sub-head (a)(2), for the word “three” there shall be substituted the word “four”;

• (vi) in the same entry, after exception (ii) to head (a), there shall be inserted the following —

The exceptions in paragraph (i) or (ii) above do not apply to technological documents the information in which includes information relating to goods excluded by paragraphs (i) or (ii)

• (vii) in the same entry, for head (c) there shall be substituted the following head:

(c) Temperature-compensated crystal oscillators (TCXO) having any of the following characteristics — (1) a stability with respect to temperature of better (less) than +/- 1.0 x 10-7 over an operatingtemperature range exceeding 70 degsCC (2) an operating temperature range wider than 120 degsCC (3) rated to have an acceleration sensitivity of less than 1 x 10-9 of the operating frequency per g (where g 9.81 m/sec2) over a vibration test frequency range from 10 to 2,000 Hz sine wave and with a maximum level of acceleration not exceeding 20 gC (4) designed to withstand a shock greater than 10,000 g over a period of 1msC (5) radiation hardened to better (less) than 10-10 of the operating frequency per gray (1 rad 10-2 gray) C

• (viii) in the same entry, after head (c), there shall be inserted the following exception:

There shall be excluded from this entry optical grade quartz crystals; This exception does not apply to technological documents the information in which includes information relating to goods excluded by the exception.

• (k) in Group 3H of Part II of Schedule 1 —

• (i) in entry IL1648 (Cobalt-based alloys), in head (b), the word “didymium” shall be deleted;

• (ii) in entry IL1661 (Nickel-based alloys), in head (b), the word “didymium” shall be deleted;

• (iii) for entry IL1675 there shall be substituted the following entry:

IL1675 Superconductive materials and composite conductors, the following — (a) Superconductive materials of all types, the followingC (1) having a critical temperature, at zero magnetic induction, of 9.85 K or higher; and (2) in quantities of more than 25 g; (b) Superconductive niobium-titanium wire not embedded in a metallic matrix with a cross section area of less than 3.14x 10-4 mm2 (ie 20 micrometre diameter for circular filaments)C (c) Composite conductors containing at least one superconductive constituent having a critical temperature, at zero magnetic induction, of 9.3 K or higherC except - such conductors which — (1) have superconductive filaments embedded in a copper or copper-based mixture matrix; and (2) have either of the following two sets of characteristics — (A) the superconductive constituent or filament — (a) has a cross section area of more than 3.14 x 10-4 mm2 (ie 20 micrometre diameter for circular filaments); (b) is either non-coated, or insulated with — (1) varnish; (2) glass fibre; (3) polyamide; or (4) polyimide; and (c) does not remain in the superconductive state when (1) evaluated in sample lengths of less than 1 m; and (2) exposed to a magnetic field with an induction of more than 12 tesla at a temperature of 4.2 K (-268.95 degsC); or (B) the composite conductor contains — (a) superconductive niobium-titanium wire with a cross section area of more than 9.5 x 10-5 mm2 (ie 11 micrometre diameter for circular filaments); and (b) a total mass (including the mass of the matrix) not exceeding 10 kg. In this entry — - “superconductive” means materials (ie metals, alloys or compounds) which can lose all electrical resistance, ie which can attain infinite electrical conductivity and carry very large electrical currents without Joule heating. The superconductive state of a material is individually characterised by a critical temperature, a critical magnetic field, which is a function of temperature, and a critical current density which is, however, a function of both magnetic field and temperature; - “critical temperature” means the temperature at which the material loses all resistance to the flow of direct current. Critical temperature (sometimes referred to as the transition temperature) is of a specific superconductive material.

• (l) in Group 3I of Part II of Schedule 1 —

• (i) in entry IL1733 (Base materials, non-composite ceramic materials, ceramic-ceramic composite materials, and precursor materials), in sub-head (a)(1)(i), for the words “silicon and aluminium” , there shall be substituted the words “silicon or aluminium”;

• (ii) in the same entry in sub-head (a)(1)(ii), after the word “zirconium” , there shall be inserted the words “or titanium”;

• (iii) in the same entry, in sub-head (d)(3), for the word “polycarbosilazines” there shall be substituted the word “polycarbosilazanes”;

• (iv) for entry IL1746 there shall be substituted the following entry:

IL1746 Non-fluorinated polymeric substances, the following: and manufactures thereof — (a) Polyimides (including maleimides)C except - fully cured polyimide or polyimide-based film, sheet, tape or ribbon having a maximum thickness of 0.254 mm (10 mils), whether or not coated or laminated with heat or pressure-sensitive resinous substances of an adhesive nature, which contain no fibrous reinforcing materials and which have not been coated or laminated with carbon, graphite, metals or magnetic substances. (b) PolybenzimidazoleC (c) Aromatic polyamides, includingheterocyclic aromatic polyamides characterized as aromatic due to the presence of a benzene ring C (d) PolybenzothiazolesC (e) PolyoxadiazoleC (f) Polyphosphazenes (Polyphosphonitriles)C (g) Polystyrylpyridine (PSP)C (h) Thermoplastic liquid crystal copolyesters, the following — (1) ethylene copolyesters of terephthalic acid and parahydroxybenzoic acidC except - manufactures thereof, having both of the following characteristics — a tensile modulus of less than 15 GPa; specially designed for non-aerospace, non-electronic civil applications; (2) phenylene or biphenylene copolyesters of terephthalic acid and parahydroxybenzoic acidC (i) PolybenzoxazolesC (j) Aromatic polyether ether ketones (PEEK)C (k) Butadiene polymers the following— (1) carboxyl terminated polybutadiene (CTPB) C (2) hydroxyl terminated polybutadiene (HTPB) C (3) thiol terminated polybutadiene (TTPB)C (4) vinyl terminated polybutadiene (VTPB)C (5) cyclised 1-2 polybutadiene C (6) mouldable copolymers of butadiene and acrylic acidC (7) mouldable terpolymers of butadiene, acrylonitrile and acrylic acid or any of the homologues of acrylic acidC (l) Carboxyl terminated polyisopreneC There shall be excluded from this entry manufactured articles where the value of the polymeric component together with materials specified elsewhere in this Schedule is less than 50 per cent of the total value of the materials used.

• (v) for entry IL1754 there shall be substituted the following entry:

IL1754 Fluorinated compounds, materials and manufactures thereof, the following (a) Non-polymeric materials, the following (1) dibromotetrafluoroethane, except when having a purity of 99.8 per cent or less and containing at least 25 particles of 200 micrometres or larger in size per 100 mlC (2) perfluoroalkylaminesC (b) Unprocessed polymeric materials and intermediates, the following — (1) polychlorotrifluoroethylene, oily and waxy modifications onlyC (2) fluoroelastomeric compounds at least 95 per cent of which is composed of — (A) a combination of two or more of the following monomersC (a) tetrafluoroethylene; (b) chlorotrifluoroethylene; (c) vinylidene fluoride; (d) hexafluoropropylene; (e) bromotrifluoroethylene; (f) iodotrifluoroethylene; (g) perfluoromethylvinylether; (h) perfluoropropoxypropylvinylether; (B) a copolymer of tetrafluoroethylene and propyleneC (C) a terpolymer of tetrafluoroethylene, vinylidene fluoride and propyleneC (3) polybromotrifluoroethylene;C (4) copolymers of vinylidene fluoride having 75 per cent or more beta crystalline structure without stretchingC (5) fluorinated silicone rubbers and intermediates for their production, containing 30 per cent or more of combined fluorineC (6) fluorinated polyimides, and hexafluoroacetone and other intermediates for their production, containing 30 per cent or more of combined fluorineC (7) fluorinated phosphazene elastomers and intermediates for their production, containing 30 per cent or more of combined fluorineC (c) Manufactures, the following — (1) greases, lubricants and dielectric fluids, damping fluids and flotation fluids at least 85 per cent of which is made of any of the materials specified in head (a) or (b) above, except greases and lubricants made from polyperfluoroalkylethersC (2) electric wire and cable coated with or insulated with any of the materials specified in sub-head (b)(2) above, except oil well logging cable C (3) seals, gaskets, rods, sheets, sealants or fuel bladders 50 per cent or more of which is made of any of the materials specified in sub-head (b)(2), (b)(5), (b)(6) or (b)(7) above, and specially designed for aerospace or aircraft useC (4) piezoelectric polymers and copolymers made from vinylidene fluoride having both of the following characteristicsC (A) in sheet or film form; and (B) with a thickness of more than 200 micrometres; (5) reinforced tubing (including connectors and fittings for use with such tubing) incorporating coagulated dispersion grades of polytetrafluoroethylene, copolymers of tetrafluoroethylene and hexafluoropropylene, or any of the fluorocarbon materials specified in sub-head (b)(2) above and designed for operating (working) pressures of 21 MPa or more, whether or not specially processed to make the flow surfaces electrically conductiveC except - polychlorotrifluoroethylene-based lubricating oils in quantities of 19 litres or less. - This exception does not apply to technological documents the information in which includes information relating to goods excluded in the exception.

• (vi) for entry IL1759 there shall be substituted the following entry:

IL1759 Syntactic foam for underwater use and microspheres, the following — (a) Syntactic foam having either of the following characteristics — (1) designed for marine depths exceeding 1000 mC (2) a density less than 0.561 g/cm3 unless designed for use at marine depths less than 100 mC (b) Hollow microspheres (microballoons) for use in syntactic foam, having all of the following characteristics -C (1) made from glass or plastic; (2) a true particle density of more than 0.16 g/cm3 and less than 0.41 g/cm3; (3) a bulk density of more than 0.088 g/cm3 and less than 0.23 g/cm3; (4) a compressive strength more than 2.8 MPa; (5) a particle size range of 20 to 200 micrometre; and (6) a floater content of at least 94 per cent by volume. In this entry — - “syntactic foam” means hollow spheres of plastic or glass embedded in a resin matrix.

• (vii) in entry IL1763 (Fibrous and filamentary materials) in head (a), for “3.18 x 10 to the power of 6m” there shall be substituted “4 x 10 to the power of 6m”;

• (viii) in the same entry, after paragraph (b) of the exception to heads (a) and (b), there shall be inserted the following:

This exception does not apply to technological documents the information in which includes information relating to goods excluded by the exception

• (ix) in entry IL1781 (Synthetic lubricating oils and greases), for head (b) there shall be substituted the following head:

(b) Phenylene or alkylphenylene ethers or thioethers, or their mixtures, containing more than 2 ether or thio-ether functions, or mixtures thereof C

Signed

R J Meadway — An Under-Secretary, — Department of Trade and Industry — 22nd March 1990

Explanatory note

(This note is not part of the Order)

This Order further amends the Export of Goods (Control) Order 1989.

Export control is:

• (a) lifted on: certain environmental chambers; didymium; certain flight instrumentation systems; simple infrared devices for entertainment; simple infrared devices for educational use; certain infrared communications equipment; certain programmable instruments exceeding 1 GHz; certain FFT signal analysers; medical equipment containing signal analysers; certain parametric or paramagnetic amplifiers for simple education use; certain photomultiplier tubes; first generation electron tubes; capacitors; certain digital oscilloscopes; certain transient recorders; electronic TV or video cameras for broadcast use; high speed plates for cameras; certain photographic film; optical grade quartz crystals; equipment for the production of liquid fluorine; containers for storage or transportation of liquid fluorine; nozzles, dies and extruder barrels;

• (b) reduced in scope on: surface effect vehicles (hovercraft); certain water screw propellor systems; fluorinated silicon rubber; fluorinated polyimides; fluorinated phosphazenes; fibrous and filamentary materials; underwater vision systems; photographic cameras specially designed or modified for underwater use; light systems specially designed or modified for underwater use; manned underwater vehicles; technology for the design and production of propellor blades; underwater ultrasonic communications equipment; acoustic systems for positioning vessels (including ships); ground communication radio equipment for use with temporary fixed services; Nd: YAG lasers; power meters; broadband noise sources; noise figure meters; logic analysers; digital voltage measuring equipment; PROM copiers; certain PROM programmers; radio transmitters using frequency synthesis; programmable signal analysers; non-programmable signal analysers; scaler network analysers; certain electronic tubes (valves); certain devices manufactured from super conducting materials; plug-in modules for analogue oscilloscopes; optical devices for cinema recording cameras; electronic framing cameras; quartz filter elements; temperature-compensated crystal oscillators;

• (c) redefined or clarified in relation to technological documents, and on: small arms and machine guns; military smoke producing appliances; ammunition, bombs, torpedoes, rockets and missiles; fire control system and sub-systems; tanks and vehicles specially designed for military purposes; toxicological agents and tear gas; vessels (including ships) of war and special naval equipment; aircraft and helicopters; unmanned airborne vehicles; aero-engines and aircraft or helicopter equipment, associated equipment and components; military infrared, thermal imaging and image intensifier equipment; external fittings, coatings and treatments for the suppression of acoustic, radar, infrared and other emissions specially designed for military use; equipment and technology for theproduction of goods specified in Group 1; cryogenic and superconductive equipment and components; electrically triggered shutters; directed energy weapons (DEW) systems; vacuum pump systems; reinforced tubing; submersible systems; deep submergence vehicles; tilt wing and tilt rotor aircraft; compasses, gyroscopes, accelerometers and inertial equipment; marine or terrestrial acoustic or ultrasonic systems or equipment; bit error rate test sets; microwave radio links; electronic equipment and instruments; instrument frequency synthesizers; signal analysers; swept frequency network analysers; microwave equipment; photo-multiplier tubes; electronic vacuum tubes (valves) and cathodes; software; electronic devices; circuits and systems manufactured from superconducting materials; oscilloscopes; cameras, components and photographic recording media; superconductive materials; base materials, non-fluorinated polymeric substances; syntactic foam; fibrous and filamentary materials; synthetic lubricating oils and greases;

• (d) extended in scope on: forgings and castings and semi-finished products; specially designed environmentaltest facilities; software for modelling or simulating military operation scenarios and Command, Communications, Control and Intelligence (C3I) applications; pump-jet systems; technology for aircraft and helicopters; borides of titanium; gaseous diffusion blowersand compressors;

• (e) introduced on: weapons using caseless ammunition; tyre inflation pressure control systems and large deflection suspensions specially designed or modified for military use; specialisedequipment for simulating military scenarios; field engineer equipment specially designed for use in a combat zone; kinetic energy weapon systems; air independent power systems for submersibles; general purpose data communications protocol analysers, testers and simulators for X.25; certain high resolution CCD video cameras; certain cameras incorporating detector arrays; UF6-resistant fully fluorinated hydrocarbon polymers; radomes.

Footnotes

[^f00001]: 1939 c. 69

[^f00002]: See S.I. 1970/1537

[^f00003]: S.I. 1989/2376, amended by S.I. 1990/128