TKM MX170C, Owner'S Manual

Page: 9 / 15

9
III. OPERATING THE MX170C
Operating controls for the MX170(C) are located on the unit front panel or through
three access points in the case (See Figure 2)
The unit front panel is shown in Figure 1. The left-hand COMM (yellow) readout
indicates the active COMM frequency and the right hand COMM (red) readout indicates
the standby COMM frequency. The left-hand NAV (yellow) readout indicates the active
NA V frequency and the right hand NA V (red) readout indicates the standby NA V
frequency. A 'tic' readout is provided on the upper left-hand corner of the first digit of
each of the four frequency readouts.
The active COMM 'tic' indicates the presence of transmitter power.
The standby COMM 'tic' indicates that the Frequency Selection knobs will control
COMM standby frequency.
The active NAV 'tic' indicates that the NAV receiver is in the Ident Mode.
The standby NAV 'tic' indicates that the Frequency Selector knobs will control NAV
standby frequency.
Power Application. The COMM volume control contains the master power switch and
activates the COMM functions. The NA V volume control contains a power switch for
the remote NA V units.
In order to activate all COMM and NA V functions, both
volume controls must be turned on.
Frequency Selection. The N/C button is used to activate either the COMM or the NA
V frequency selection as indicated by the appropriate 'tic' display. The MHz and KHz
controls can then be used to select a desired standby channel.
In COMM the '25' button
is used to advance the frequency by 25 KHz.
After the desired standby frequency is selected, it may be transferred to the active
position by pressing the desired 'flip-flop' buttons left of the displays. The active and
standby channels will be transposed each time the button is pressed.
Ident/Voice Selection. The VC-ID button can be used to select a tone filter in order to
receive voice signals on the NAV receiver. The switch is also used for frequency storage
as described in Frequency Storage.
Test. The TEST button is a dual function switch. In normal operation, it is used to
override the squelch to verify receiver operation and to receive weak signals. The switch
is also used for frequency storage as described below.