The Wireless Telegraphy (Exemption) Regulations 1999

Telemetry and Telecommand: General

2.  Wireless telegraphy apparatus designed or adapted for–

(a) Telemetry and Telecommand, so as to be capable of use on one or more of the frequencies or within one of the frequency bands, and at a radiated level not exceeding the maximum for such frequencies or frequency bands, for each category of apparatus, specified in the table below and subject to the following sub-paragraphs;

(b) in category iii, channel numbers 1 and 3 to 11 are available with a channel centre frequency of 173.2 MHz + (channel bandwidth × channel number);

(c) in category iv, channel numbers 1 to 5 are available with a channel centre frequency of 173.2 MHz + (channel bandwidth × channel number);

(d) in category v, Telemetry and Telecommand may only be used in conjunction with telephony with a non-locking push to talk key or voice operated carrier;

(e) in category vii, the band may also be used for airborne telemetry based on 25 kHz channel spacing;

(f) in categories viii, ix and xii, consecutive channels may be combined for increased bandwidth up to the maximum sub-band frequency allocation. The total signal bandwidth must be contained within the allocated sub-band–

Category	Frequencies or frequency band	Radiated level	Channel bandwidth	Music or speech permitted	Duty cycle	ETSI standard
i	26.995, 27.045, 27.095, 27.145, 27.195 MHz	1 mW erp	10 kHz	No	—	EN 300 220–1
ii	40.66–40.7 MHz	10 mW erp	—	No	—
iii	173.2–173.35 MHz	1 mW erp	12.5 kHz	No
iv	173.2–173.35 MHz	1 mW erp	25 kHz	No	—
v	173.5875, 173.6 MHz	10 mW erp	12.5 kHz	Yes	—
vi	417.9–418.1 MHz	250 μW erp	—	No	—
vii	433.05–434.79 MHz	10 mW erp	—	No	≤ 10%
viii	868–868.6 MHz	25 mW erp	≤ 25 kHz	No	≤ 1%
ix	868.7–869.2 MHz	25 mW erp	≤ 25 kHz	No	≤ 0.1%
x	869.3–869.4 MHz	10 mW erp	≤ 25 kHz	No	≤ 10%
xi	869.4–869.65 MHz	500 mW erp	≤ 25 kHz	No	≤ 10%
xii	869.7–870 MHz	5 mW erp	≤ 25 kHz	No	up to 100 %
xiii	2400–2483.5 MHz	10 mW eirp	≤ 20 MHz	Yes	—	I-ETS 300 440