[Elecraft] K3 receiver noise questionable test results
Al Lorona
alorona at sbcglobal.net
Sat Dec 19 01:40:19 EST 2009
> But a few of the K3 owners that have pro-audio
> instrumentation have reported that the K3 audio
> response is more like 'white noise' (a flat response),
>as opposed to other receivers which have a 'pink
> noise' audio spectrum.
If that's the case, then the K3's receiver equalizer can be set up to mimic a pink rolloff which is -3 dB per octave.
50 Hz : + 9 dB
100 : + 6
200 : + 3
400 : 0
800 : - 3
1600 : - 6
3200 : - 9
or if 3 dB per octave is a little severe, then one could try 2 dB per.
This is awfully conjectural until we can quantify exactly what it is that a Yaesu FT-1000 has that a K3 doesn't.
One of the guys at work has pasted on his cubicle wall that famous quote of Lord Kelvin that I believe applies here:
When you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge of it is of a meager and unsatisfactory kind; it may be the beginning of knowledge, but you have scarcely, in your thoughts, advanced it to the stage of science.
Sir William Thompson, Lord Kelvin (1824-1907)
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