Filter
Top Products
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:
qPush [SLEEP/ ] for 1 sec. to enter quick set
mode.
wRotate the [M-CH] selector to select the “HF ANT”
item.
e
Rotate the main dial to select the antenna connector.
rPush [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.
30 mm
10 mm (soft solder)
10 mm
1–2 mm
solder solder
Soft
solder
Coupling ring
PL-259 CONNECTOR INSTALLATION EXAMPLE
qe
r
w
Slide the coupling ring
down. Strip the cable
jacket and soft solder.
Slide the connector
body on and solder it.
Screw the coupling ring
onto the connector
body.
Strip the cable as
shown at left. Soft
solder the center con-
ductor.
(10 mm ≈
3
⁄8 in)
15 mm
Clamp
3 mm 6 mm
Center conductor
Washer
Nut Rubber gasket
TYPE-N CONNECTOR INSTALLATION EXAMPLE
qe
r
w
Slide the nut, washer,
rubber gasket and
clamp over the
coaxial cable, then
cut the end of the
cable evenly.
Soft solder the center
conductor. Install the
center conductor pin and
solder it.
Carefully slide the plug
body into place aligning
the center conductor pin
on the cable. Tighten the
nut onto the plug body.
• Be sure the center
conductor is the same
height as the plug body.
Strip the cable and
fold the braid back
over the clamp.
(10 mm ≈
3
⁄8 in)
Plug body
No space
Solder hole
500 HF ANT