[Elecraft] K3 receiver noise questionable test results

[Mike Harris]

G'day,

Please correct me if I'm wrong but my understanding is that the 
settings of the RX equaliser work within the DSP block and will do 
little to suppress the higher frequency products that contaminate 
the subsequent audio out of the DAC.  This is the domain of the 
analogue LPF module that has finally emerged kicking and screaming.

Regards,

Mike VP8NO


----- Original Message ----- 
From: "Al Lorona" <alorona at sbcglobal.net>
Cc: <elecraft at mailman.qth.net>
Sent: Saturday, December 19, 2009 3:40 AM
Subject: Re: [Elecraft] K3 receiver noise questionable test results


> 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