Conductor 1; Grounding; Antenna Connection; Cf (Compact Flash) Memory Card - Icom IC-7800 Instruction Manual

■ Grounding

■ Antenna connection

PL-259 CONNECTOR INSTALLATION EXAMPLE
q
30 mm
Coupling ring 10 mm (soft solder)
w
10 mm
Soft
solder
1–2 mm
solder solder
e
r
30 mm ≈ in 10 mm ≈
9 ⁄
8

■ CF (Compact Flash) memory card

Accessing indicator
Slide the coupling ring
down. Strip the cable
jacket and soft solder.
Strip the cable as
shown at left. Soft sol-
der the center con-
ductor.
Slide the connector
body on and solder it.
Screw the coupling
ring onto the
connector body.
in 1–2 mm ≈
3 ⁄ 1 ⁄ in
8 16
2-3
INSTALLATION AND CONNECTIONS
To prevent electrical shock, television interference
(TVI), broadcast interference (BCI) and other prob-
lems, ground the transceiver through the GROUND
terminal on the rear panel.
For best results, connect a heavy gauge wire or strap
to a long earth-sunk copper rod. Make the distance be-
tween the [GND] terminal and ground as short as pos-
sible.
R WARNING: NEVER
terminal to a gas or electric pipe, since the connec-
tion could cause an explosion or electric shock.
For radio communications, the antenna is of critical im-
portance, along with output power and sensitivity. Se-
lect antenna(s), such as a well-matched 50 Ω antenna,
and feedline. 1.5:1 or better of Voltage Standing Wave
Ratio (VSWR) is recommended for your desired band.
Of course, the transmission line should be a coaxial
cable.
When using 1 antenna, use the [ANT1] connector.
CAUTION:
Protect your transceiver from lightning
by using a lightning arrestor.
Antenna SWR
Each antenna is tuned for a specified frequency
range and SWR may be increased out-of-range.
When the SWR is higher than approx. 2.0:1, the
transceiver's power drops to protect the final transis-
tor. In this case, an antenna tuner is useful to match
the transceiver and antenna. Low SWR allows full
power for transmitting even when using the antenna
tuner. The IC-7800 has an SWR meter to monitor the
antenna SWR continuously.
Insert the supplied CF (Compact Flash) memory
card into the CF memory card slot.
• To remove the CF memory card, push-in the button, lo-
cated at left hand side of the slot.
Make sure the direction of the memory card.
NEVER insert or remove the CF memory card
during accessing indicator lights or blinks.
2
connect the [GND]