[Elecraft] K3: DSP NR for Data A mode?

2012-07-20 Thread Bill Frantz
Is it possible to implement Noise Reduction in the DSP for Data A mode? Or is it a really stupid idea? The PSK software I use -- cocoaModem for the Mac -- has a noise reduction mode which works reasonably well when it is receiving a broad spectrum signal -- 2 KHz or more. It does not work well

Re: [Elecraft] K3: DSP NR for Data A mode?

2012-07-20 Thread N5GE
Have you tried using a narrower filter in the K3 or using the K3 NR? Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member On Fri, 20 Jul 2012 09:03:20 -0700, Bill Frantz fra...@pwpconsult.com wrote: Is it possible to implement Noise Reduction in the DSP for Data A mode? Or is

Re: [Elecraft] K3: DSP NR for Data A mode?

2012-07-20 Thread Bill Frantz
Note that NR is not available in DATA A mode -- K3 manual p25: NR turns noise reduction on. It doesn’t apply to DATA or FM modes, or with AGC turned off. Ray identified why I would like the K3 NR to work in DATA A when he said, NR algorithms -need- a broad chunk of spectrum. If the DSP NR

Re: [Elecraft] K3: DSP NR for Data A mode?

2012-07-20 Thread Don Wilhelm
Bill, I have not found 24 bit soundcards to be a requirement for data modes. 16 bit soundcards will do just fine. Yes, NR is not available in Data modes because it distorts the signal and would result in reduced copyability. The object is to produce as clean a signal as possible to the