Supplied Equipment; Operation; Outline; Equipment Interface - Kenwood KSS Operation Manual

ITEM
I/O UNIT
2.5mm Stereo Cable
Operation Manual

OPERATION

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Outline

To operate the system, follow these basic
procedures.
1) Connect the two TH-79AKSSs, the I/O UNIT,
and the HF transceiver (TS-570D(G)/S(G) or
TS-870S).
2) Place one of the TH-79AKSSs in CMD mode,
and the other in TRP mode.
3) Set up your HF transceiver.
4) Start your operation.
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Equipment Interface

Connect the equipment as shown on page 2. Be
sure to turn OFF the HF power source and the two
TH-79AKSSs before beginning.
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Setting the Mode

Note: The security code for your KSS consists of both your
DTSS code and your CTCSS frequency.
• This system is set up to operate only if the
DTSS code, and CTCSS frequency is matched
on the 440 MHz band, between the two
portable transceivers. You must decide these
two settings. The same frequencies and DTMF
code MUST be used when setting up the TRP
mode.
• The received HF signal is transmitted from the
TRP to the CMD on the 144 MHz band.
Choose a frequency which does not interfere
with local stations.
• The transmit (TX) voice signal and control
signals for HF are transmitted from the CMD to
the TRP on the 440 MHz band. Choose a
frequency which does not interfere with other
local stations.
MEMO
DTSS CODE
CTCSS FREQUENCY
FREQUENCY IN THE
144 MHz BAND
FREQUENCY IN THE
440 MHz BAND
QUANTITY
1
1(use for TH-D7A only)
1
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Setup Procedure

1) Turn the power ON for the portable transceiver
being used for CMD.
2) Set up its DTSS code and CTCSS frequency
on the 440 MHz band, its operating frequency
on the 144 MHz band, and its operating
frequency on the 440 MHz band. (For
operation of the TH-79AKSS, refer to its
Operation Manual).
3) Turn off the transceiver's power.
4) Press and hold the PTT and VFO buttons, then
turn on the transceiver's power. The following
display appears when the CMD mode is setup
successfully.
Note:
u Turn OFF the following functions: transmit inhibit, DTSS,
paging, bell, and ABC.
u Using a high CTCSS frequency may cause an audible tone
to be output from the speaker of the HF transceiver. If this
happens, select a lower CTCSS frequency which does not
cause the problem.
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Setup Cancellation

1) Turn OFF the CMD transceiver's power.
2) Push and hold the PTT and VFO buttons, then
turn ON the transceiver's power. Cancellation
is successful when "Sky" and "Cmd" no longer
appear on the screen.
CMD mode provides the set-up for sending
"orders" to the HF transceiver, and receiving band
activity from the HF transceiver. When you push
the PTT button on the CMD, it transmits. At the
same time, the HF transceiver also transmits.
The received volume can be controlled on the
CMD. Several of the DTMF keys have specific
purposes in controlling the HF transceiver. (See
the diagram on page 4).
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Other Limits in CMD Mode

While the HF transceiver is in CMD mode, extra
functions such as lamp, monitor, and power
change-over will operate along with the functions
mentioned above. All other functions are
inhibited. For example, in order to change the
frequency, you must first return to the
conventional operation mode.
3