[Elecraft] KSB2 build time?

[Don Wilhelm]

  Tom,

John's comments are right on for the entire process of building, 
installing and doing the alignment.
The building is not a problem, it just depends on your construction 
methods - if you are a "insert one component and then solder it" type of 
builder, it will take you longer than those who "stuff a group of 
components and then solder".

As for John's statements about the use of Spectrogram to align the OP1 
filter, yes, I highly recommend that method.  Put a Spectrogram marker 
at 300 Hz and adjust the BFO so the approximate -3dB point on the low 
frequency passband skirt is positioned at 300 Hz, and you will have 
quite a reasonable filter for both transmit and receive - no need to set 
up FL2 using OP1 for a separate receive filter as is sometimes suggested 
- that is only necessary for those having a highly unusual vocal 
frequency span.  I set all K2s that I repair in that manner, and have 
never received any complaints, but have often received compliments 
because the on-air audio reports of my customers have been quite positive.

73,
Don W3FPR

On 5/5/2011 8:58 PM, VK7JB wrote:
> Hi Tom,
>
> I'm a slow and methodical constructor and the KSB2 took me 8 hours to build,
> over 4 nights.
>
> What took a bit of time for me was the BFO alignment to optimise  TX audio,
> configuring the filters etc.  I found Spectrogram very helpful.  I did a lot
> of  monitoring and recording to get the TX audio the way I like it. Because
> this was  my first experience doing this sort of alignment, it took me maybe
> 4 hours all up until I was happy.  It would take very little time the second
> time round or for someone experienced.
>
> There are some good tips in the archives about set up of the K2 after
> installing the KSB2.
>
> I must say that I have several rigs and too many microphones and headsets
> and I do use outboard audio equalisation on some of them.  I also have a K3
> with its on-board 8 band EQ.  BUT - the rig  that attracts the most
> unsolicited positive comments about TX audio is the little K2/100.  People
> comment "great audio - what are you running?!"  And it's my K2 with the MH2
> hand mic.  I rarely hear that using my other set-ups and so I wonder why I
> bother with all the other audio paraphernalia.
>
> Enjoy building.
>
> John
> VK7JB
>
> --
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