[Elecraft] SSB Contesting filtering out contesters

[n9tf at comcast.net]

David, 
Jim is spot on about wide dirty signals getting into your passband. The best you can do is play with the band width and shift to find a combination that limits the interference and makes the signal you are trying to copy, more copyable. For SSB contesting I will use the 2.1khz filter with a bit of DSP and also some shift to knock down the interfering station. I will say, the K3/S is far superior to the 756ProIII I had prior in this regard, from sharp filtering and AGC pumping. I can usually knock out a strong wide signal well into the passband I am listening, so that I can copy the weaker station. 
  
I am amazed though how close these days SSB contesters "overlap" intentionally into someone else's frequency, sharing half of the 2.7khz band width! That's one reason I prefer and enjoy CW and RTTY contests over SSB contests. Much more pleasing on the ears and temper! 
  
73, Gene N9TF 
K3S 10057 

----- Original Message -----

From: "David Smith" <dlsmith at harlanonline.net> 
To: "elecraft" <elecraft at mailman.qth.net> 
Sent: Friday, September 2, 2016 12:50:36 PM 
Subject: [Elecraft] SSB Contesting filtering out contesters 

Have a question I feel I know the answer to.  I am an avid contester and 
when contesting thru the years (since 1978 and especially on 40 meters) have 
always had problems filtering out on my receive other contest stations who 
bleed over to my receive frequency their signals so I care hear the weaker 
stations coming back to me, mainly domestic contests.  Thru the years 
operated IC 765, Omni 6+ and now the K3S.  Still with DSP filtering, etc. I 
feel this is a way of life with contesting.  Have had this discussion with 
many of my big gun contesters and we feel this must be a way of life with 
ssb contests.  CW contests are much easier to filter out the side to side 
stations.  My directional antennas on these bands help a lot but guess this 
is the way of life with ssb contesting.  Would like other input from your 
experiences. 

  

Thanks 

  

David, ND4Y  (KS3, KS2, KX2 owner) 



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