[Elecraft] NG0R - KSB2 low audio level

[John Hoaglun]

I need some help troubleshooting an issue.

K2+KSB2+K160RX+KIO2+KAT2+K60XV+XV144+XV222+XV432+IMA rework module

I have not spent much time using this rig on SSB but I plan to use it to
drive the transverters. So as part of the setup & checkout of the system
I am noticing that my SSB power level seems pretty low compared to my CW
power level. Specifically when I test my transverters I am getting my
expected power on all of them with CW. (The transverter power level on
each unit is setup for driving the input power level for the brick for
that band.)

144: 25w CW  --expected
222: 10w CW --expected
432: 10w CW --expected

When I change over to SSB the power level is almost nothing
144: 1-2w SSB
222: less than 1w SSB
432: less than 1w SSB

I am using an Icom HM-36 mic (and have tested with two Heil headsets
with similar results).  SSBA=3 and SSBC=4-1

Initially I was thinking that I had an issue with Mic bias but I am not
so sure now. I configure my computer to send modulated CW over SSB to
compare the output level against a native CW signal. The spread matches
the info above. 

It appears that my SSB audio level is attenuated for some reason.  (The
audio reports are good with no distortion.) 

Any suggestions for where to look on the KSB2 or an adjustment that I
might have missed?

73 de NG0R

-- 
John Hoaglun
NG0R - EN25
http://www.hoaglun.com