[Elecraft] Volume Level with NR

[JAMES ROGERS]

	These are my observations first with the K2 and ADSP, the the Flex  
radios both 1000 and 5000A and then finally and more recently the  
FT-2000 series of radios. You may take this for what it is worth....
	This matter is highly subjective. One must remember that of the modes  
available to us as amateurs, speech is the more closely associated  
with noise. Noise reduction algorithms work on the basis of coherency  
or lack thereof. A steady carrier would be an example of a coherent  
signal. Speech lacks coherency. White noise is without coherence.  
Therefore there has to be a compomrise when one applies noise  
reduction to speech. The speech will be further compromised, the more  
aggressive an algorithm is used.
	Further, one might find an algorithm that works well at one site, may  
be totally ineffective at another location. Noise as we as amateurs  
know, can take on many personalities. Atmospherics, line noise,  
thermal noise.... the list just goes on. I think most of us will find  
within the algorithms and aggressiveness present in the K3, something  
that works well for us. To achieve something that is perfect  for all,  
would seem to be very difficult indeed.
	I have not been able to reproduce the drastic change in volume  
reported by some here. I can only wait with you for the resolution of  
your situation and provide the following information in the hope it  
might shed some light. My K3 is a recent one, just a couple of weeks  
old and is running the following firmware and software: MCU 4.06, DSP  
2.60.

73s Jim, W4ATK