[AMPS] True Or Not True #2

[2]

>
>
>
>> Sure - in the absence of QRM, it's a workable CW signal. 
>> 
>> You can easily set up a simulation with a signal generator and an RMS-
>> reading AC voltmeter. 
>
>Zero dB S/N is a very workable CW signal for good weak signal 
>CW ops. Many people can even dig below zero dB S/N if the noise 
>is "rough" noise.
>
>The reason is noise power is directly related to filter bandwidth, and 
>CW is a very narrow mode. The brain, if trained properly, makes a 
>good CW filter. The brain can discriminate against off-frequency 
>noise as long as it has some type of frequency difference. 
>
>If you restrict noise and signal to a very narrow BW, it gets tough 
>to "filter" in your head because it all sounds the same. 

//  Excellent.

-  R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures.  
end


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