[Elecraft] [K2] K2 KIO2 Polling Noise in PC Speakers w/ HRD

[Julian, G4ILO]

N5BCN wrote:
> 
> 
> I recently completed the KIO2 module (without KPA100) and have been
> controlling the K2 via HRD v5.0.  I'm passing the K2 audio via the K2 EXT
> SPKR connection to the PC Mic In and finally out to PC Speakers.
> 

It's curious that you're getting this using both a real serial port and a
USB adapter.  I wonder if you're hearing PC bus noise that is being picked
up by the computer? Most of us would be blissfully unaware of this since we
don't listen to our radios through the computer. But it could explain why
many people claim they get better decoding after switching to an external
sound card box like a RigExpert or MicroHam.

Is the noise present when listening to a different audio source (e.g.
internet radio) while HRD is polling the K2?

-----
Julian, G4ILO. K2 #392  K3 #222.
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune - http://www.g4ilo.com/ktune.html

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