9
2
CONNECTIONS
■ Antenna connection
Antennas play a very important role in receiver opera-
tion. Connecting a poor quality antenna to the
IC-R8500 will result in less than optimum performance.
The IC-R8500 requires at least 2 antennas for full fre-
quency coverage: one for 0.1 to 30 MHz and one for
30 to 2000 MHz.
D Using a long wire antenna for HF bands
The IC-R8500 has a 500 Ω phono (RCA) antenna
connector for the HF bands. When using a long wire
antenna, instead of a 50 Ω matched antenna, use one
as long as possible (at least 10 m, 33 ft) and select the
active connector as follows:
q Push [SLEEP/ ] for 1 sec. to enter quick set
mode.
w Rotate the [M-CH] selector to select the “HF ANT”
item.
e
Rotate the main dial to select the antenna connector.
r Push [SLEEP/ ] momentarily to exit quick set
mode.
■ Grounding
To prevent accidents involving electricity and interfer-
ence from transceivers, ground the receiver through
the [GND] terminal on the rear panel.
For best results, connect a heavy gauge cable to a
water pipe or long, earth-sunk copper rod. Make the
distance between the [GND] terminal and ground as
short as possible.
RWARNING: NEVER use a gas pipe or electri-
cal conduit pipe for grounding.
down. Strip the cable
jacket and soft solder.
body on and solder it.
body.
shown at left. Soft
ductor.
cable evenly.
conductor. Install the
solder it.
on the cable. Tighten the
nut onto the plug body.
height as the plug body.
over the clamp.
