H.F.:-High Frequency: 160, 80/75, 40, 30, 20, 17, 15, 12, 10 metre bands.
VHF: -Very High Frequency, 144-148 MHz.
UHF:-Ultra High Frequency, 430-450 MHz.
IRLP: -Internet Radio Linking Project.
EchoLink: -communications over the Internet, using voice-over-IP (VoIP) technology.
PSK31: -"Phase Shift Keying, 31 Baud". PSK31 digital point-to-point communications.
Packet:-a method of transmitting and receiving data in digital form via Amateur Radio.