Tim,
With the Elecraft mic, an SSBA setting of 1 is normally sufficient
although 2 can be used on bands where the RF gain is lower (10/12 meters).
I would recommend setting the SSBC menu parameter to 3-1 for general
use. If that is too much compression for ragchew groups, use 2-1.
The KSB2 has excess bass response. You can change KSB2 C34 from 2.2uF
to 0.47uF and C23 from 0.1uF to something in the range of .0033 to
.005uF to reduce the bass response.
If you have the 2.1kHz OP1 filter width, the audio may appear a bit
'pinched' on the high frequency end, but if the width is the more recent
2.4kHz, it should sound more natural.
If you don't know which width you have, look at the KSB2 board to see if
there are capacitors in the CB and CN positions - if you have capacitors
there, the width is the older 2.1kHz.
If you have an older K2 (below SN2560) it is likely that you should
replace the KSB2 filter crystals unless that has already been upgraded.
Careful alignment of the OP1 filter passband is also necessary for
proper SSB audio response. Use Specrtogram and set markers at 300 and
2600 Hz - center the passband between those two markers.
(if you have the 2.1kHz filter width, use 300 and 2300 Hz markers instead).
73,
Don W3FPR
On 12/5/2014 10:58 AM, Tim Edmonson wrote:
I have a k2 and the original elecraft mic. I want to use it on 75 meters and
rag chew a little during the winter months.
Where should the mic setting and compression setting be to produce audio that
is pleasant to listen too...
I'm not interested at all in sounding like a broadcaster or trying to tailor my
audio to every individuals liking.
But- I do get told often that it sounds a little "pinched" up.
I do run my k2/100 into an amp.
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