[Elecraft] K3: listening to both rcvrs

[Kok Chen]

On Nov 16, 2008, at 1:52 PM, Joe Subich, W4TV wrote:
> Assuming equal volume settings and equal bandwidths in the two
> receivers, the S/N will degrade by 6 dB (twice the noise voltage).

Unless the noise is correlated, the probability density function from  
summing two random variables causes variances (noise power), not the  
standard deviations (noise amplitude), to add.  So the reduction in  
SNR (assuming equal noise power) is 3.01 dB, not 6 dB.

73
Chen, W7AY