[Elecraft] [K3] K3 RX Equaliser SW App?

[GM0ELP]

Hi Paul,
    
The bandwidth and Notch should be done at the IF stage not the AF stage, I think everyone knows this. There has never been a question of where it is better to taylor response. Of course it's better to do these things at the IF stage.

I am suggesting a 'cumulative' IF and AF response 'combined'. I could manually taylor (approximate) any required AF response using CAT commands and the available 8 audio bands and gain/attenuation levels. Why wouldn't software be able to do that? It's not a question of how steep the slopes are, its a matter of using an AF feature in the K3 to augment the IF performance.

If there was a software tool available to approximately track AF to IF response would you try it? I would, and I think it is possible. Can you give me a reason why it isn't possible?

Doug GM0ELP


  ----- Original Message ----- 
  From: pd0psb [via Elecraft] 
  To: GM0ELP 
  Sent: Tuesday, December 29, 2009 7:28 PM
  Subject: Re: K3 RX Equaliser SW App?


  Hi Doug, 

  Some time ago Wayne and Lyle explained that the RX EQ is not meant as an extra "selectivity tool". 
  It's there to do the last tailoring of passpand response, make up for room acoustics or speaker/hp response. The RX EQ modifies the IF passband and is not a seperate post-detector AF filter. 

  Notch/HPF/LPF/etc can better (and much steeper) be done with bandwidth and notch controls. 

  73' 
  Paul 
  PD0PSB 




    GM0ELP wrote:
    Hi All, 
    Does anyone know of a software application for controlling the K3 rx equaliser to specifically create easily adjustable audio filtering toys? 

    Ideally I would like something that replaces the manual manipulation of individual graphic equaliser sliders with more automated/general filter creation controls  i.e. lpf/hpf(buttons), cuf-off freq (text entry box), peak/notch (buttons), magnitude and sweep (sliders). 

    I don't have a specific use in mind, other than to be able to use the rx equaliser whilst operating. 

    I have in the past created cat control sequencies for various filter functions and saved them individually as macros, but useabilty was poor. 

    Any ideas/suggestions welcome. 



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