[Elecraft] [LP-PAN] Re: K3 Overload from WYFR

[Steve Ellington]

Lyle: Yes I do believe the LP-PAN is being overloaded but still, I do hear that buckshot modulation from WYFR up to about 7010kHz on the K3 so it too is being affected although not as much. 
N4LQ Steve
N4LQ at carolina.rr.com
  ----- Original Message ----- 
  From: Lyle Johnson 
  To: Steve Ellington 
  Cc: Elecraft at mailman.qth.net ; LP-PAN at yahoogroups.com 
  Sent: Sunday, June 14, 2009 8:46 PM
  Subject: [LP-PAN] Re: [Elecraft] K3 Overload from WYFR





  > 1. Is it normal to expect the K3's front end to overload under these 
  > conditions?

  Are you sure the K3 front end is overloading and not the LP-PAN system 
  (QSD, attached soundcard)? Are you experiencing symptoms that suggest 
  reh K3 front end is overloading other than the LP-PAN display (which may 
  be displaying the LP-PAN system, and in particular the soundcard ADC, 
  overloading)?

  You might try adding an attenuator between the K3 IF out and the LP-PAN 
  IF in and see if the overloading disappears. If so, it might indicate 
  the LP-PAN system is overloading rather than the K3.

  73,

  Lyle KK7P

  PS - The K3 blocking dynamic range is 20 to 30 dB better than PC-based 
  SDRs. So I suspect you are seeing a weakness in the PC-based SDR system 
  rather than the K3, but I've been wrong before! :-)



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