[Elecraft] [K2] KSB2 Filter alignment question

[Matt VK2RQ]

You did the right thing using spectrogram to align the filters -- the values in the manual are really only a rough guide for those who don't have access to more advanced alignment methods such as spectrogram.

73,
Matt VK2RQ

> On 2 Sep 2014, at 10:13 pm, Gareth - M5KVK <m5kvk at m5kvk.org> wrote:
> 
> K2 serial 03885 fitted with KSB Rev C board.
> 
> When I installed the KSB2 board recently, I went through the process of
> setting up the BFOs as per the KSB2 manual. However, I just downloaded
> Spectrogram and went through N0SS's procedure for setting up the filters.
> 
> Most of the adjusted settings were within 2-300Hz of those in the manual
> (all on the higher side), but a couple were moved quite a bit. I'm
> interested in others' experiences in this area.
> 
> The outliers were USB FL2 which needed to be 500Hz higher and USB FL3 which
> needed to be 700Hz higher.
> 
> The main issue when looking with Spectrogram was that the USB spectrum was
> far too bassy when the BFOs were set as per the manual.
> 
> Regards
> 
> Gareth - M5KVK
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