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+The signal generator found under Utilities can be used to generate a carrier which can be FM modulated with
+* CW : unmodulated carrier
+* Sine 
+* triangle
+* sawtooth up
+* sawtooth down
+* square
+* noise : does not appear to function
+
+Shape defines the generated waveform as above
+Tone defines the frequency of modulation
+Update. When unchecked, the user is required to drop carrier, then re-start carrier in order for a change of modulation shape or tone frequency to take effect. When checked, values will update on the fly.
+Stop after 1s limits carrier duration to 1 second
+