Kantronics MT1200, User Manual, Page: 49 / 157

calibrate (CAL) command. Previous models used a set of jumpers and an analog
potentiometer (pot) to set this level. With the MT1200, no jumpers are used, just a
command.
You should adjust the drive level to provide about 3 to 3.5 kHz of deviation with your
radio. If you don’t have access to a deviation meter, adjust drive so your packet
transmissions generate about the same audio sound as packets heard from other
stations.
The XMITLVL command has a parameter default value of 100; this corresponds to a
drive voltage of about 50 mV. You may change this level by increasing the
parameter/count. For counts below 256, the voltage is increased in 0.5 mV steps; above
that, the drive increases roughly 15 mV per step.
For details, see the description of the XMITLVL command in the “Command Reference.”
Alternatively, you may use the calibrate command (CAL) which has a zoom feature; that
is, you can hold down the ‘-’ or ‘+’ key to decrease or increase the voltage (as you watch
a meter or listen). See the commands section for more detail on these commands. The
MT1200 must be in TERMINAL interface mode to access CALIBRATE mode.
For more information on installation topics, see the appendices.
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