1964_IMPORT_AND_EXPORT_(STRATEGIC_COMMODITIES)_REGULATIONS — Page 85

1988 Ed.]

Import and Export (Strategic Commodities) Regulations

[CAP. 60

G85

[Subsidiary]

IL1559

IL1560

(iv) Tubes, having all of the following characteristics:

(1) Used as fixed-frequency or voltage-tunable oscillator tubes;

(2) Designed to operate at frequencies below 20 GHz, and

(3) A maximum output power of less than 3 W;

(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 W;

(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 require for their operation a large component of velocity transverse to the direction of the applied magnetic field, including but not limited to gyrotrons, ubitrons and peniotrons;

(f) Tubes designed to withstand on any axis an acceleration of short duration (shock) greater than 1,000 g;

(g) Tubes designed for operation in ambient temperatures exceeding 200°C;

(h) Tubes of the types described in (c), (d) or (e) above, which are designed to operate with no filament or cathode heating element (as indicated by the absence of heating supply connections);

(i) Tubes which utilize a modulated beam of electrons striking one or more semi-conductor diodes to provide power gain. (see also Item IL1544);

(j) Cathodes for electronic vacuum tubes, as follows:

Note:

(1) Specially designed for tubes embargoed by sub-items (a) to (i) above; or

(2) Impregnated cathodes capable of producing a current density exceeding 0.5 A/cm2 at rated operating conditions.

Nothing in the following shall be construed as permitting the export of technology for electronic vacuum tubes or specially designed components therefor (for manufacturing equipment, see item IL1355(a)). This item does not embargo the following electronic vacuum tubes and specially designed components therefor:

Tubes embargoed by sub-items (a) and (c) above, specially designed for civil telecasting according to CCIR or OIRT standards.

Hydrogen/hydrogen isotope thyratrons of ceramic-metal construction and having any of the following characteristics, and accessories therefor-

(a) A peak pulse power output exceeding 20 MW;

(b) A peak anode voltage greater than 25 kV;

(c) A peak current rating greater than 1.5 kA.

Note:

For thyratrons rated for both single-shot (crowbar) and modulator service, the figure for modulator service should be used.

Capacitors designed for or capable of maintaining their rated electrical and mechanical characteristics during their specified operating lifetime, and technology therefor, as follows:

(a) Monolithic ceramic capacitors (other than boundary layered capacitors) using non-ferro-electric strontium titanate (SrTiO3) dielectric rated for operation over the whole range of ambient temperatures from below -55°C to above +85°C;

(b) Technology for the design and production of tantalum capacitors rated for operation at ambient temperatures exceeding 125°C, except sintered electrolytic types having a casing made of epoxy resin or which are sealed or coated with epoxy resin.

Note:

Capacitors rated for operation during their specified lifetime at ambient temperatures below -55°C or above +200°C are covered by Munitions List Item ML11.

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