The ETS RF Quick Reference contains handy offline references for calculations, conversions, searching, and in pocket guides for various topics in the palm of your hand.
Topics currently included are Radio Frequency (RF), Wi-Fi, and Linux Networking Commands.
Included Converters, Calculators, and Databases in V1.0:
dBm to Watts Converter
Antenna Length Calculator
PSK Calculator
OUI Lookup
Port Lookup