[Elecraft] KPA500 thermal clicks - dB meter

[Gary Smith]

You can get a very nice dB meter in your 
smart phone with several free apps. The 
only caveat is it will only effectively 
register 80 dB even though the scale 
appears to read higher. This intensity 
level is due to audio limiting circuitry 
in the phone itself. I do have a hand held 
dB meter that is accurate to 120 dB but I 
rarely am around that noise level.

73,

Gary
KA1J

<snip>

> If one wishes to cite how loud a sound exists, then use a sound level
> meter and measure the noise at a specific and stated distance and
> several different axis and report the level in dB. A weighted or C
> weighted.   Also measure and state the level of the room ambient.
>    Use a spectrum analyzer to quantify the nature or content of the
> sound, frequency and waveform.   Those numbers will then equate to
> something that is meaningful.   If others do the same, then there is
> contained evidence of units which may contribute to the artifact of
> concern.
> 
> 73
> 
> Bob, K4TAX