Ham Radio for Arduino and Picaxe (c) 2013 ARRL

ArgentRadioShield Library

Leigh L. Klotz, Jr. WA5ZNU

License

The ArgentRadioShield Arduino library is released under two licenses, so you can choose to use it under either the MIT license or LGPL 3.0:
http://www.opensource.org/licenses/mit-license
http://www.gnu.org/licenses/lgpl–3.0.txt