Some of the equipment that we may end up using during this endeavor

• Inexpensive Flexible Receivers such as RTL-2832 based dongles
• USRP (Expensive Radio Receiver/Transmitter)
• Antennas (Many different frequencies) Antenna building will likely be a topic at some future date
• Handheld HAM Band Transceivers
• HF Transceivers
• Sound Card interfaces
• Microcontrollers