[RFI] 14028 to 14034 hashbirdietrash

Jim Brown jim at audiosystemsgroup.com
Thu Jul 28 00:51:04 EDT 2005


On Wed, 27 Jul 2005 21:40:43 -0700, Cortland Richmond wrote:

>practical to see if an active noise 
>canceler such as a Timewave or MFJ will let you hear past 'em. 

In general, that will only work for one source at a time, because it 
nulls a specific direction and phase offset. Now, since each source 
is on its own frequency, if you have the patience to tweak each the 
canceller for each source for every QSO that might work. And you'll 
need a little noise sense antenna that favors the noise but not the 
signal. I have awful noise levels here in Chicago, and the canceller 
occasionally helps me for an S-unit or more, which can be enough to 
dig weak ones out of the noise. But it is a PITA to deal with. 

Jim K9YC




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