Started: June 28, 2008

v0.2	Sept 14, 2008

	Ignore deviceMenu if there are no sound cards.
	

v0.3	Sept 25, 2008

	Added QPSK31 generator.


v0.4	July 13, 2009

	Changed SNR from 1 to 2 decimal places.
	Changed output slider range from -24 dB to -48 dB
	change -fifoDepth limiy to 8192 to handle 16000 s/s
	"auto recording"
	save input tab view to plist
	
v0.5	Aug & Nov 26, 2009

	Removed input soft clipping.
	Fixed output bug.
	Random seed for model was not initialized at start of play.
	compute average power instead of peak power.
	

Notes:

	VE3NEA Echo model (private email Feb. 6, 2005): 22ms delay, Doppler spread 1 Hz.

	