[Elecraft] k3 filter install

[Bill Frantz]

When I installed the 250Hz 8 pole filter in my minimal K3 (base 
+ K144XV + KXV3A + FM filter), the procedure in the manual 
appendix A (p77ff) calls for the removal of the K144XV 
transverter. After looking inside, removing it looked 
unnecessary, so I proceeded without removing it. I encountered 
no problems with this modified procedure. It's really nice to 
hear how the background noise goes down as I switch between 300 
Hz and 250 Hz and the filter switches in.

Cheers - Bill, AE6JV

On 10/6/12 at 9:14 AM, Mike.Carter at unh.edu (Mike K8CN) wrote:

>The full procedure is a bit long for an email, but please see page 46 in the
>current version of the K3 Owners Manual, which is available under Manuals
>and Downloads at the Elecraft web page.  All of the filter setup functions
>are accessed through the CONFIG menus.  There are 3 key steps to follow: (1)
>Tell the K3 where to find the new filter (slot FLx), its bandwidth and its
>frequency offset; for the 8 pole filters such as your KFL3A-400 there is
>0.00 frequency offset, (2) Enable the filter for receive mode, and (3)
>Activate filter loss compensation (typically 1-2 dB for the 400 Hz 8-pole
>filter).  You shouldn't need to alter the Transmit Crystal Filter Selection
>settings if you have already done this procedure with the stock 2.7 kHz
>5-pole filter.
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