[Elecraft] K2- setting the filters

[Jack]

I have been operating my K2 as a CW only radio for a few months and have now 
just added the KSB2 SSB board.

When I only had CW, I set the filter widths and BFO settings as per the 
defaults advised and was very happy with it. However, since setting the 
default values suggested in the KSB2 book, I've discovered a few unanswered 
issues.

Q1, Do I have to set FL1 to OP1? I was under the impression I had to. But a 
friend has set his FL1 to 2.4KHz. I know this is the filter that is used to 
transmit. Is it OK to narrow it down? Is there any benefit?

Q2, Why does the book also say FL2 should be set to OP1 on SSB? Is this a 
typo?

Q3, I have now set the filters using spectrogram. EVERYONE should do this, 
it is so easy and makes a huge difference. And the program is free! Do it 
!!!!
I found that the default BFO values in the KSB2 book had CW and USB pretty 
much perfect, but LSB was way off (3 or 400Hz). Retuning with spectrogram 
has cured that and it sounds great on LSB now. Is it normal to be so far 
off?

Q4, The filter widths are actually much wider than that set on the K2 
display. ie 2KHz filter is actually about 3KHz wide. To get the same "sound" 
as my other HF rigs I am having to set the filter widths much narrower than 
expected. ie set the display to 1.2KHz width to get an actual 1.8KHz width 
trace on spectrogram. Is this normal? Can this be adjusted? Am I worrying 
about nothing? :o)

Overall i am very happy with the recievers performance. The K2 has taken 
over as main radio, pushing japanese sets aside.
But if anyone could advise on the above, that would aid my learing process. 
Thats one of the reasons why i bought it :o)

Thanks all
73
Jack VK2CJC / MM0AXL
Fists #9666 - CW QRP Club #753 - Elecraft K2 #6404
Mid North Coast Amateur Radio Group www.mncarg.org