[Elecraft] K3 - A different RTTY question

[Claude Du Berger]

Normally I dont need the DPB.
But when in RUN-CQ mode with QRM in the last NAQP
I was very happy to have it.

73
Claude Du Berger VE2FK
ve2fk at arrl.net

http://www.contestgroupduquebec.com/
http://sites.google.com/site/va2upcontesting/Home

  ----- Original Message ----- 
  From: Dave Hachadorian 
  To: nf4l at nf4l.com ; Elecraft Reflector 
  Sent: Monday, March 01, 2010 5:32 PM
  Subject: Re: [Elecraft] K3 - A different RTTY question


  I have tried using the dual passband filter in FSK, and it 
  doesn't seem to copy any better than the flat DSP filter with 250 
  Hz roofer. I also can hear that slight ringing on the mark and 
  space frequency in the headphones with DPB. The ringing makes it 
  a little hard to tell in the headphones if a really weak station 
  is calling. I use the regular flat DSP filter now.

  Dave Hachadorian, K6LL
  Yuma, AZ

  --------------------------------------------------
  From: "Mike" <nf4l at nf4l.com>
  Sent: Monday, March 01, 2010 2:42 PM
  To: <elecraft at mailman.qth.net>
  Subject: Re: [Elecraft] K3 - A different RTTY question

  > I've found I copy much better without using dual passband. I 
  > have the
  > 400Hz 8-pole filter. I'm using AFSK-A. I use MMTTY.
  > With DPB on, even the noise sounds a bit like a RTTY signal, 
  > and the
  > MMTTY  shows 2 little peaks on the FFT display.
  > Do I have a configuration problem, or is that normal?
  >
  > 73, Mike NF4L