Message-ID: <4F626267.4020207@usa.net>
Date: Thu, 15 Mar 2012 22:43:03 +0100
From: Alberto di Bene <dibene@usa.net>
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Subject: Re: LF: New Argo
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On 3/15/2012 5:56 PM, Chris wrote:
> Yes, tried running in 'NDB slow', but it still locks up so you can't change anything, not even close it down!
> Not to worry, new computer next Christmas, maybe.
> Thanks and vy 73,
> Chris, G4AYT (not Gary!).
Hi Chris (sorry for the wrong name...),

  maybe with the changes I have in mind the CPU requirements of Argo will be lower.
Presently the DSP stuff is done at a 6 kHz sampling rate (after the downsampling), and
at 11052 Hz for the NDB mode. This will change, as I will do a translation of the spectrum,
and a downsampling to a rate fast just enough to accommodate the viewable range.
This will bring down the CPU load as a side effect. the primary goal is to allow to receive
the 8.97 kHz band and the SAQ transmissions by connecting directly the antenna to the
sound card.

73  Alberto  I2PHD
 

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    On 3/15/2012 5:56 PM, Chris wrote:
    <blockquote
      cite=3D"mid:C4B92146B8AF478DAE0BBF0642596F31@IBM7FFA209F07C"
      type=3D"cite">
      <div><font face=3D"Arial" size=3D"2">Yes, tried running in 'NDB slo=
w',
          but it still locks up so you can't change anything, not even
          close it down!</font></div>
      <div><font face=3D"Arial" size=3D"2">Not to worry, new computer nex=
t
          Christmas, maybe.</font></div>
      <div><font face=3D"Arial" size=3D"2">Thanks and vy 73,</font></div>
      <div><font face=3D"Arial" size=3D"2">Chris, G4AYT (not Gary!).</fon=
t></div>
    </blockquote>
    <font face=3D"Tahoma">Hi Chris (sorry for the wrong name...),<br>
      <br>
      =A0 maybe with the changes I have in mind the CPU requirements of
      Argo will be lower.<br>
      Presently the DSP stuff is done at a 6 kHz sampling rate (after
      the downsampling), and<br>
      at 11052 Hz for the NDB mode. This will change, as I will do a
      translation of the spectrum,<br>
      and a downsampling to a rate fast just enough to accommodate the
      viewable range. <br>
      This will bring down the CPU load as a side effect. the primary
      goal is to allow to receive<br>
      the 8.97 kHz band and the SAQ transmissions by connecting directly
      the antenna to the<br>
      sound card.<br>
      <br>
      73=A0 Alberto=A0 I2PHD<br>
      =A0 <br>
    </font>
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