[CQ-Contest] Re: Choice of CW Narrow filters

Scott Ellington sdelling at facstaff.wisc.edu
Fri Apr 16 12:07:21 EDT 1999

n6tr at teleport.com wrote:
> I recently discovered the power of this DSP when doing moonbounce
> work on six meters.  I have always thought that you had to use really
> narrow filters on your receiver to hear weak EME signals.  However,
> what I found was that it was EASIER to copy weak EME signals using
> the SSB bandwidth positions!

I've observed the same thing on HF.  In the absence of strong QRM, a weak
signal is just as easy, or easier, to copy with a wide bandwidth.  Since wide
filter bandwidth clearly must reduce the S/N ratio, the effective bandwidth
organic DSP must be much smaller.  Quite amazing.


Scott  K9MA

Scott Ellington
sdelling at facstaff.wisc.edu
Madison, Wisconsin    USA

CQ-Contest on WWW:        http://www.contesting.com/_cq-contest/
Administrative requests:  cq-contest-REQUEST at contesting.com

More information about the CQ-Contest mailing list