Mean power (2)
The mean power supplied to the antenna transmission line by a transmitter during normal operation averaged over a time sufficiently long compared with the period of the lowest frequency encountered in the modulation.
Reference: C.C.I.R. (modified)
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
Celsius (previously Centigrade)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM