High Level Description

The Narrow FM Receiver is a Sub-Application of the Audio Receiver Application. Its purpose is to Demodulate and Record RF Signals modulated using the Frequency Modulation scheme. It can demodulate mono Narrow FM signals with bandwidths from 8.5KHz to 16KHz.Such signals are commonly used for two-way communication.

User Interface

The NFM Receiver uses the Standard UI Layout, which has the following features (in UI order). Some features only become available when the Parent item is selected.

• Switch Sub-Application (AM, WFM, NFM, SPEC)
  • Switch FM Bandwidth (8.5KHz, 11KHz, 16KHz)
  • Configure Squelch level
• Change Frequency
  • Change Step-size
• Increase/Decrease Baseband Gain
  • Enable Amplifier
• Increase/Decrease IF Amplifier Gain
• Increase/Decrease Audio Volume Level
• Commence Recording