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
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