C4444
111
2. Connection of other DC
powersupplies.
TR-9000
Standard voltage: 13.8V DC
Current capacity: More than
Regulated DC power
3A
supply
NOTE:
Preferably, voltage should be
adjustable between 1 2V and
16V DC.
*The regulated supply should
▪
be equipped with a built-in
protection circuit for both
overcurrent and overvoltage.
CAUTION:
Battery charging power supply
cannot be used.
Regular antenna
111111r
Use of the PS-20
is recommended,
matches the
as it perfectly
V
-1121
130-9(m
36(71
1 TR-9000.
Transceiver performance depends
largely on the type of antenna us-
ed. For fixed station operation,
there are ground plane antennas
(omni-directional) and Yagi anten-
na (uni-directional). The Yagi
antenna is suitable for long
distance operation (DX) or com-
munication with a specific party
(having excellent directivity and
high gain). An omni-directional
antenna is generally used for local
.o
operation.
Antenna select
switch
Yagi antenna
Control cable
Ground plane
antenna
It is convenient to install both
Yagi and ground plane antennas
Fig. 1 -3 Installation for Fixed Station Operation
for selectable use.
Roof tripod
Rotor
Antenna installation
(example)
Yagi antenna (stacked)
Coaxial cable
Ground plane
antenna
1. PS-20 connection
Regulated DC
power supply
SP-120
TR-9000
P5-20
7
•
Antenna installation
Various types of antennas for 2 meters mobile operation
are available. (See Fig. 1-2C)
NOTE:
For gutter-mount installation, the antenna bracket must be
grounded to the car body as shown in Fig. 1-2C. Affix the
antenna securely, referring to the antenna instruction.
•
Power supply
Connect the supplied power cord with fuse directly to the
battery terminals. Connecting to the cigarette lighter
socket can cause a poor connection, and excessive voltage
drop.
•
Back up power for micro-computer
With power supplied from battery, the micro-computer
keeps operating even when the power switch is OFF. In
this case, current drain is very low, approximately 2.5mA.
The car can be parked overnight with little battery power
consumed.
However, when the car is to be parked for a long period of
time (more than 1 month), it is advisable to disconnect the
power plug, in this case, the back up function is disabled.
•
Ignition noise
The transceiver is designed to suppress ignition noise;
however, if excessive noise is present, it may be necessary
to use suppressor spark plugs (with resistors).
1.2.3. FIXED STATION installation, [general]
•
Power supply (Fig. 1 -3)
The PS-20 optional power supply is recommended.
•
Antenna (Fig. 1-3)
Various types of fixed station antennas are commercially
available. Select your desired antenna according to your in-
stallation space and application (DX, local QSO, etc.). Note
that the SWR of your antenna should be less than 1.5. A
high SWR will cause the TR-9000 protective circuit to
operate, reducing the transmit output power.
The TR-9000 is factory adjusted to deliver the rated RF
output (10W) at about 146MHz, where the RF meter in-
dicates "8" on the 10-division (lower) uniform scale. The
RF meter will indicate about this point when the antenna
SWR is less than 1.5.
•
Micro-computer back up (retention of memory function)
Unless the power source is disconnected, the micro-
computer keeps its back up function even if the power
switch is turned OFF. If yob desire back-up with the power
source disconnected, plug the battery charger (Parts No.
W09-0008-05) or B0-9 System Base (option) back-up
power cable into the back-up power socket on the rear of
the TR-9000.
