In these rules, unless the context otherwise requires, -
(a) “Act” means the Indian Telegraph Act, 1885 (13 of 1885);
(b) “Authority” means the authority notified by the Central Government under sub-section
(2) of section 4 of the Indian Telegraph Act, 1885 (13 of 1885);
(c) “effective radiated power (in a given direction)” or e.r.p. means the product of the power supplied to the antenna and its gain relative to a half-wave dipole in a given direction;
(d) “equivalent isotropic radiated power” or e.i.r.p. means the total power that would have to be radiated by a hypothetical isotropic antenna to give the same signal strength as the actual source in the direction of the antennas strongest beam;
(e) “power density” means the total energy output per unit bandwidth from a pulse or sequence of pulses for which transmit power is at its maximum level, divided by the total duration of the pulses;
(f) “duty cycle” means ratio expressed as a percentage of the cumulative duration of transmission Ton_cum within an observation interval Tobs;
duty cycle on an observation bandwidth Fobs;
(g) words and expressions used in these rules and not defined but defined in the Act and the Indian Wireless Telegraphy Act, 1933 (17 of 1933), shall have the same meanings respectively as assigned to them in those Acts.