Table of Contents
Advertisement
2-2-3.
Antenna
Caution:
Protect
your
equipment—Use
a
LIGHTNING
AR-
RESTOR.
Any of the common antenna systems designed for use
on the high frequency amateur bands may be used with
the TS-440S/44X provided the input impedance of the
transmission line is not outside the capability of the Au-
tomatic Antenna Tuner. The transmission line should
be coaxial cable. An antenna system which shows a
SWR (Standing Wave Ratio) of less than 1.5: 1 when
using 50 ohm coaxial transmission line, or a system
that results in a transmission line input impedance that
is essentially resistive, and between 20 and 150 ohms
will take power from the transceiver through the AT
unit.
2-2-4.
Key connection
Your key should be connected as illustrated in figure
below. When using an electronic keyer, make sure that
polarity is set for positive. Always use shielded line
from the key to transceiver.
Before connecting, check that the
polarity is correct. The KEY jack
provides
+5.5V.
Use
shielded
cable.
KEY
To key
@—
+5.5V
GND
Key connection
2-3. MOBILE
Being compact in design, this transceiver is ideal for
mobile
operation.
Satisfactory
mobile
operation
is
achieved through proper power and antenna connec-
tion, and thoughtful transceiver installation and ad-
justment.
2-3-1.
Mounting bracket installation
Secure the TS-440S/44X under the dashboard using
an optional MB-430 mounting bracket. As an alterna-
tive, use strapping, making sure that the TS-440S/44X
will not slip out of place while operating the vehicle.
Notes:
1. Do not install the TS-440S/44X
near the heater
outlet.
2. Allow sufficient space behind the TS-440S/44X to
ensure proper ventilation.
2-3-2.
Power supply connection
Cautions:
1. Turn POWER
switch OFF before connecting/dis-
connecting the power cable.
2. Observe battery polarity.
DC power cable
Red and White
+
Black and gray
—
3. When charging your vehicle battery, or when jump-
starting a dead battery, ALWAYS
disconnect the
power cable from the back of the transceiver, or
damage may result to the transceiver.
Connect the TS-440S/44X power cable to the bat-
tery terminals,
with consideration to current re-
quirements and noise prevention. The maximum
current drawn by the TS-440S/44X reaches to be-
tween 18 and 20A when transmitting. Therefore,
the cable should be made as short as possible, us-
ing the specified fuse. Also, determine that the
power system of the car (including the battery and
generator or alternator) will handle the increased
load of the TS-440S/44X.
U
se fuse
essory p
oO
mum rati
©
12V Battery
Use short heavy leads.
terminal as possible.
As sh
Fuse
Fuse should be as close to the battery
Advertisement
Table of Contents
