[hpsdr] TS-B2000 vs Mercury

[Phil Harman]

Hi Dan,

Thanks for the recording and Mercury sure sounds nice. One suggestion, to my ear it sounds like you have the AGC threshold set too low. How I  normally run PowerSDR is to find a spot on the band where there is just noise and then increase the AGC-T control from a  low value until the band noise does not increase any more.  Back the control off just a little and that way the AGC is not acting on noise. 

I think there is a bug in the AGC code that I need to talk to Bob N4HY about since if you set the AGC-T control too high then weak signals actually distort. 

73's Phil...VK6APH 




  ----- Original Message ----- 
  From: Daniel Quigley 
  To: HPSDR Reflector 
  Sent: Sunday, January 04, 2009 2:08 AM
  Subject: [hpsdr] TS-B2000 vs Mercury


  ***** High Performance Software Defined Radio Discussion List *****




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  Hi Folks,
   
  Last night I did an A/B comparison between Mercury and a Kenwood TS-B2000.  The receivers used the exact same antenna/tuner chain and settings were the same:  
   
  Preamp:OFF 
  Noise Blanker:ON 
  TS-B2000 DSP Width: 0-5Kc 
  HPSDR LSB Width : 0-5Kc
  RxEQ: OFF (Flat) on both receivers
   
  Mercury is running V2.2 
   
  I didn't normalize for audio level differences but I'll let you judge the rest...
   
  HPSDR:
  http://alvargi.50megs.com/Camradio/hpsdr.mp3
   
  TS-B2000
  http://alvargi.50megs.com/Camradio/hrd.mp3
   



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