[Elecraft] Why all those filters - K3

[Mike Harris]

G'day,

Not seen any mention of the 1.0kHz roofing filter.  Good looking passband 
and for me it would be good up front for general CW.  My K2 CW filters are 
set for 1.0kHz, 700Hz, 400Hz and 200Hz.  I mainly use 700Hz, it gives 
presence and drop to 400Hz if really necessary.  200Hz just seems too 
dead, though nothing wrong with the signal level.  My DSP audio filters 
are set just a little tighter to clean up the ultimate rejection.

It has been mentioned that the K2 DSP noise reduction works better with a 
bit wider source spectrum to chew on so 1.0kHz looks like a good starting 
point with maybe something tighter if AGC pumping is a problem during 
contests.

Regards,

Mike VP8NO

----- Original Message ----- 
From: "Fred (FL)" <ncsailors at yahoo.com>
To: <elecraft at mailman.qth.net>
Sent: Friday, May 04, 2007 4:37 PM
Subject: [Elecraft] Why all those filters - K3


| Looking at the new K3 order form - one is faced
| with a potential order selection of some 8 or
| more filters.  And some others coming on the
| scene, have been mentioned. Many are called roofing
| filters.
|
| I'm hoping Elecraft will explain the use, benefit
| and potential shortcoming of one's K3 - if they do
| or do not order any or all of these filters.