Yaesu FT-1000MP Operating Manual page 11

General /nforma$Fion
Transceiver Location
Antenna Considerabfons
To assure long life of the components, a pri-
mary eonsideratjort in setting up the FT-1000MP
is providing for adequate ventilation around the
cabinet, The cooling system of the FT-f 008MP
must be free
$0
draw
coo!
air in at %he lower rear
of the transceiver, and to expel warm air out of the
upper rear panel, Do not place the transceiver on
top of anather heat-generating device such as a
linear amplifier, and do not place equipment,
books or papers on top of the transceiver. Also,
provde a Few centimeters s% space
on
either side
of the Iralgsceiver, if possible, Avoid heating vents
and window locatirans that could expose the trans-
ceiver to excessive direct sunlight, especially in
hat climates.
Grounding
For protection from shack and proper perform
anee, connect the
GND
terminal on the rear panel
to a good earth ground, using a heavy braided
cable of the shortest length possible. All other
station equipment should be connected to the
same grounding cable, as close together as prac-
tical. if you use a compukr with or near the
FT-1OQOM&q you may need to experiment with
ground wiring to sugspress computer noise in the
receiver, and ground loops during transmission.
Adjusting the Frant Feet
The two front feet of the FT-1 OOOMP can be set
in either of two positions. By turning the knurled
ring around a (retracted) foot clockwise, the mid-
dle of the foot will extend about one centimeter,
Turn the ring as far as it will go (about 'I4-turn) to
lock the extended foot in place.
Ps
retract an
extended fool, turn the knurled r i g cgunterclock-
wise '/4-turn while pressing on the center of the
foot.
Any antennas connected to the FT-1000MP
should have coaxial feedlines with 50-a imped-
ance, and include a well-grounded lightning ar-
restor. For the antenna connected to the main
ANT
A
or
B
jack, the automatic antenna tuner in the
FT-I QOOMP is capable of matching antennas with
an S V V W of up to 3:1 or more on the amateur
bands to the transmitter. Nevertheless, optimum
pedormance for both reception and transmission
will generally result with an antenna designed to
provide a 50-Q unbalanced resistive load at the
operating frequency. An antenna that is not de-
signed for resonance at the operating frequency
may present too high an SWR to allow proper
matching with the built-in antenna tuner, in which
case the antenna itself should be readjusted, or
an outboard antenna tuner used.
If the tuner is unable to bring the SWR down to
an acceptable level, attempting to transmit will
result in an automatic reduction in power output
and increased losses in the feedline. Operation
under such conditions is not recommended: it is
better to install another antenna designed for that
band. Also, if your antenna has a balanced feed-
point and you use a balanced feedline, install a
balun between the feedline and the ANTAOr
B
jack
of the transceiver.
The same precautions apply to any additional
(receive-only) antennas connected to the
RX ANT
jack, except that neither of these antennas will
have the benefit of the built-in antenna tuner.
Therefore, unless such receive-snly antennas
have an impedance near 50 Q at the operating
frequency, you may need to install an external
antenna tuner to obtain optimum performance.
Memory Backup
The lithium memory
BACKUP
switch on the rear
panel is turned on at the factory, allowing VFO
and memory data to be retained while power is
OM. Backup current is miniscule, so it is not neces-
sary to turn the
BACKUP
switch off unless the
transceiver is to be stored for an extended period.
After five or more years of operation the trans-
ceiver may fail to retain memories, at which time
the lithium battery should be replaced. Contact
your dealer for replacement of the battery, or for
instructions on how to do so yourself, see page
-4
n - 4
I V i .
Adjustiklg the Front Feet