[Elecraft] SSB Filter Bandwidth

Sun Oct 12 00:03:00 2003

Hi, All,

I have implemented John's 2.5 KHz bandwidth OP1 filter, and I must say it is
a VAST improvement over what I had when I first built my SSB option board.
The filter is virtually without ripple, and the bandwidth is exactly as
advertised, all as measured with Spectrogram.  I would recommend downloading
John's note and replacing capacitors as appropriate.

Nice job, John!

Bill
NA7Y

----- Original Message ----- 
From: "John, KI6WX" <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Saturday, October 11, 2003 5:06 PM
Subject: [Elecraft] SSB Filter Bandwidth

> Roy;
> The KSB2 filter values have not been changed for Elecraft production.  My
> note does provide alternative capacitor values for a 2.0, 2.2, and 2.5 kHz
> bandwidths.  A number of people have implemented the bandwidth changes,
but
> these changes are not an official Elecraft mod.
> -John
>  KI6WX
>
>
> > Has the Elecraft official latest version of the KSB2 changed to the
2.3Khz
> or
> > 2.5Khz bandwidth?  If so, is this the same as the KI6WX mod with the
> change
> > in capacitor values in the crystal lattice? Are there any other changes
to
> the
> > crystal filter?  Roy Morris W4WFB
> >
> >
>
>
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