1964_IMPORT_AND_EXPORT_(STRATEGIC_COMMODITIES)_REGULATIONS — Page 57

1988 Ed.]

Import and Export (Strategic Commodities) Regulations

[CAP. 60

G 57

[Subsidiary]

(e) Automatic pilots used for purposes other than aircraft control and specially

designed integration "software" therefor, except marine types for surface vessels; (f) Accelerometers with a threshold of 0.005 g or less or a linearity error within 0.25 per cent of full scale output or both, which are designed for use in inertial navigation systems or in guidance systems of all types;

(g) Gyros with a rated free directional drift rate (rated free precession) or less than 0.5

degree (1 Sigma or r.m.s.) per hour in a 1 environment;

(h) Continuous output accelerometers which utilize "servo" or "force balance” tech- niques and gyros, both specified to function at acceleration levels greater than 100 g: (1) Inertial or other equipment using accelerometers embargoed by sub-items () or (h) above or gyros embargoed by sub-item (g) or (h) above, and systems incorporating such equipment, and specially designed integration "software" therefor; (1) Specially designed test, calibration and alignment equipment for the above.

GROUPS F AND G

AND

ELECTRONIC EQUIPMENT INCLUDING COMMUNICATIONS, RADAR, COMPUTER HARDWARE AND SOFTWARE

See also Item ML 11

N.B.

Broadcast and television receivers of the domestic type are expressly exempt from control.

IL 1501

Navigation, direction finding/radar and airborne communication equipment, as follows-

(See also Item IL 1485(b) and (i), 1573 and 1574.)

(a) Airborne communication equipment having any of the following characteristics,

and specially designed components and "specially designed software" therefor:

(1) Designed to operate at frequencies greater than 156 MHz;

(2) Incorporating facilities for:

(i) The rapid selection of more than 200 channels per equipment; or (ii) Equipment using frequency synthesis techniques (see also Item IL 1531); except equipment operating in the frequency range of 108 to 136 MHz with 720 channels or fewer at not less than 25 kHz spacing, and which has been in normal civil use for at least one year;

(3) Rated for continuous

extending from below (4) Designed for modulating methods employing any form of digital modulation using time and frequency redundancy such as 'Quantized Frequency Modulation' (QFM);

operation over a range of ambient temperatures 55°C to above +55°C;

(b) Navigation and direction finding equipment, as follows, specially designed components and "specially designed software" therefor, and specialized testing, calibrating and training/simulating equipment therefor:

(1) / Airborne navigation equipment and direction finding equipment, as follows:

(1) Designed to make use of "Doppler" frequency phenomena;

(ii) Utilizing the constant velocity or the rectilinear propagation charac- teristics of electro-magnetic waves having frequency less than 4 x 1014 Hz (0.75 microns);

(iii) Radio altimeters, the following:

(a) Pulse modulated;

(b) Frequency modulated having a displayed electrical output accuracy better than ±0.914 m (±3 ft) over the range between 0 and 30.4 m (100 ft) or better than ±3 per cent above 30.4 m (100 ft);

(c) Frequency modulated which have been in normal civil use for less

than one year;

Technical Note:

The accuracy is related to that provided by the electrical output circuits of the altimeter at any altitude. The word accuracy also refers to the