1964_IMPORT_AND_EXPORT_(STRATEGIC_COMMODITIES)_REGULATIONS — Page 75

1988 Ed.]

Import and Export (Strategic Commodities) Regulations

[CAP. 60

G 75

[Subsidiary]

Notes:

1. This sub-item does not embargo "frequency synthesizers" specially designed for use in tuners for entertainment type receivers;

2. See also Item IL 1516.

(e) Radio transmitters incorporating transmitter drive units, exciters and master oscillators using frequency synthesis, as follows, and specially designed components and accessories therefor:

(1) Having an output frequency of up to 32 MHz with a frequency resolution of better than 10 Hz and with a "frequency switching time" of less than 10 milliseconds;

(2) Having an output frequency from 32 MHz to 235 MHz with a frequency resolution of better than 250 Hz and with a "frequency switching time" of less than 10 milliseconds;

(3) Having an output frequency of more than 235 MHz, except:

(i) Television broadcasting transmitters having an output frequency from 470 MHz to 960 MHz with a frequency resolution of not better than 1 kHz and where the manually-operated "frequency synthesizer" incorporated in or driving the transmitter has an output frequency not greater than 120 MHz;

(ii) FM and AM ground communication equipment for use in the land mobile service and operating in the 420 to 470 MHz band, with a power output of 50 W or less for mobile units and 300 W or less for fixed units, with a frequency resolution of not better than 6.25 kHz and with a "frequency switching time" of more than 50 milliseconds;

(iii) Portable (personal) or mobile radiotelephones for civil use, e.g. for use with commercial civil cellular radiocommunications systems having all of the following characteristics:

(a) Operating in the 420 to 960 MHz range;

(b) A power output of 10 W or less; and

(c) A "frequency switching time" of 10 ms or more.

Note:

For stored programme controlled communications switching equipment used with cellular radio base stations, see Item IL 1567.

(4) Having more than three different selected synthesized output frequencies available simultaneously from one or more outputs;

(5) With facilities for pulse modulation of the output frequency of the transmitter or of the incorporated "frequency synthesizer";

(6) "Frequency synthesizers" designed for the above equipment, whether supplied separately or with the said equipment, exceeding the parameters specified in (b) above;

Note:

See also Item IL 1517.

Technical Note:

1. "Frequency synthesizer" means any kind of frequency source or signal generator, regardless of the actual technique used, providing a multiplicity of simultaneous or alternative output frequencies, from one or more outputs, controlled by, derived from or disciplined by a lesser number of standard (or master) frequencies. "Frequency switching time" means the maximum time (i.e. delay), when switched from one selected output frequency to another selected output frequency, to reach: (a) A frequency within 100 Hz of the final frequency; or

Note:

(b) An output level within 1.0 dB of the final output level.

This Item does not embargo equipment in which the output frequency is produced by the addition or subtraction of two or more crystal oscillator frequencies which may be followed by multiplication of the result.

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