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 perfor-
mance.
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:
➀ Push [SLEEP/ ] for 1 sec. to enter quick set
mode.
➁ Rotate the [M-CH] selector to select the “HF ANT”
item.
➂
Rotate the main dial to select the antenna connector.
➃ 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.
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