11th July 2007 at 14:01
#48099
Ramajayam
Guest
High frequency takes more power to transmit the signal low frequency comes under the level of down link mobile having a small power back up source but our base station haveing enough power source like d.g , Battry , A.C Power supply.
so we are choose up link is low frequencies, Eg in satelite up linke used high frequencies.