[Kenwood] TS940SAT setup
Rob Neece
[email protected]
Thu, 14 Nov 2002 00:06:21 -0500
I just acquired a TS940SAT and am in the process of getting it setup and
learning how to use it. It is a big step for me. A couple of routine
adjustments didn't work quite as expected, so I have questions.
Adjusting the Carrier Level for CW. The Owner's manual says to set the rig
to full power, put the meter in ALC and then to adjust the Carrier Level so
that the needle stays within the ALC zone. That was no problem, but later,
operating at 50 W and 5 W, I noticed the ALC was reading well above the ALC
zone. Not knowing if this was a problem, I went back to full power and
turned the Carrier Level down until the output power just started to drop,
then raised the Carrier Level just past the point where I get full output
power. That seemed like a good solution, but is there a better way?
MIC Gain. The mic I received with the 940 is a Heil HC-4. The MIC gain
control is very sensitive. With the meter in ALC, the control is set to
about 1.7 on the concentric scale. It is very sensitive around that
point. Cut the gain a little and the needle doesn't move. Raise the gain
a little and the needle goes to full scale on peaks. So the adjustment is
very sharp. I tested it on the air, and got good reports on my audio, and
the VOX works fine. In the Owner's manual, it suggests a voltage divider
for use with high output mics. This gave me the idea that I might be
dealing with a high output mic, so I put a voltage divider in the line
expecting the MIC gain to be less sensitive and to end up much higher than
1.7 when adjusted. Surprise! The MIC gain control seems to behave just
the same -- no obvious difference. On the other hand, now the VOX gain has
to be set to the maximum and I have to speak up to activate the
VOX. Needless to say, I intend to remove the voltage divider from the mic
line. Can someone make sense of this? Should the MIC gain control be so
sensitive?
Thanks,
Rob
KK4R