[Elecraft] AGC and DNR

[David Y.]

Hector,

Lyle emailed an explanation.  Apparently DNR gets unstable without AGC, so it is disengaged when AGC is off.  I just hadn't noticed it before since, like you, I rarely have AGC off.  I was experimenting based on the thread about AGC settings when I noticed it.  I'm still looking, but haven't found where it was ever mentioned before.  Anyway, it's not a bug in my radio, and Lyle's explanation makes perfect sense now that I think about it.  It also give me added appreciation for the things they have to consider when they provide all these neat "goodies" like DNR.  

Dave W7AQK


  ----- Original Message ----- 
  From: Hector Padron 
  To: David Y. 
  Cc: elecraft at mailman.qth.net 
  Sent: Sunday, February 07, 2010 10:53 AM
  Subject: AGC and DNR


        Dave you are not an ignorant because now that you mentioned it,my K3 behaves the same way, it look like DSP NR works in conjunction with the AGC so when you disengage it then NR will not work at all and the "N/A" (not aplicable) sign shows at the display,anyway I never use the radio without the AGC,for me it works better that way,but maybe this is another issue that Elecraft should fix.

        AD4C



        "For a refined ham it is compulsory to own a k3"

        --- On Sun, 2/7/10, David Y. <w7aqk at cox.net> wrote:


          From: David Y. <w7aqk at cox.net>
          Subject: [Elecraft] AGC and DNR
          To: elecraft at mailman.qth.net
          Date: Sunday, February 7, 2010, 2:46 PM


          Hi All,

          This has probably been discussed, and I obviously missed it.  It's probably 
          in the manual somewhere too.  Since I have not previously been one to turn 
          my AGC off, I just wasn't aware of it.  Now I find that if I turn my AGC 
          off, my DNR will not engage--I get a big "N/A".  So, this is normal?  You 
          must have the AGC on to use DNR?  I apologize in advance for my ignorance on 
          this matter.

          Dave W7AQK


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