| − | '''Very high frequency''' (VHF) is the part of the radio spectrum from 30 to 300 megahertz, which includes broadcast [[television]] channels 2-13, the [[FM]] broadcast band and some marine, aviation and [[land mobile services]]. [[Category:Telecommunications]] | + | '''Very high frequency''', often abbreviated VHF, is the part of the radio spectrum from 30 to 300 megahertz, which includes broadcast [[television]] channels 2-13, the [[FM]] broadcast band and some marine, aviation and [[land mobile services]].<ref>[https://www.britannica.com/technology/VHF Very high frequency] from britannica.com</ref> As VHF waves do not strongly reflect off the [[ionosphere]], they cannot be used to transmit signals beyond the horizon. |