Yaesu FT-901DM Maintenance Service Manual page 19

GENERAL
INSTALLATION
This transceiver is designed to be a single-unit
station for fixed, portable, or mobile operation.
Consequently, power supply connections provid-
ing for operation from a variety of source voltages
are available. This system provides the flexiblity
required for changing locations or quick moves
from fixed to mobile operation.
BASE STATION INSTALLATION
The FT-901DM is designed for use in many areas
of the world using supply voltages that may differ
from the operator's local supply voltage. For this
reason, be sure that the voltage marked on the
rear of the transceiver agrees with the local AC
supply voltage. THIS INSPECTION MUST BE
MADE BEFORE CONNECTING THE AC POW-
ER CORD TO THE POWER OUTLET.
CAUTION
PERMANENT DAMAGE WILL RESULT IF IM-
PROPER AC SUPPLY VOLTAGE IS APPLIED
TO THE TRANSCEIVER.
The transceiver should be connected to a good
earth ground. The ground lead should be made
with a heavy braid wire and should be connected
to the GND terminal on the rear apron of the
transceiver.
We do not recommend the use of power con-
nectors other than the ones supplied by Yaesu. If
a rig brought in for servicing is blowing fuses every
time you plug it in, check to make sure that no
"improvements" have been made to the power
cord through substitution of or modification to
the power connector.
For base station installation, the only important
consideration that need be made is to ensure
adequate circulation around the unit. Do not place
books or papers on or around the cabinet, nor
should the unit be placed on top of another
heat-generating device such as a linear amplifier.
Avoid heat ducts and window locations which are
exposed to the hot sun, and you will keep your
transceiver running at full speed for a long, long
time.
Be certain to ground the transceiver through a
heavy, braided cable less than 10 feet long. Cold
water pipes in newer houses probably are unsatis-
factory as grounding posts; it is much better
practice to use a system of one or more ground
rods, with the ground line securely bonded to the
ground system.