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
1–2 mm
solder solder
e
r
30 mm ≈ in 10 mm ≈
9 ⁄
8

■ CF (Compact Flash) memory card

Slide the coupling ring
down. Strip the cable
jacket and soft solder.
Strip the cable as
Soft
shown at left. Soft
solder
solder the
conductor.
Slide the connector
body on and solder it.
Screw the coupling
ring onto the connec-
tor body.
in 1–2 mm ≈
3 ⁄
8
Read/write indicator
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
between the [GND] terminal and ground as short as
possible.
R WARNING! NEVER
terminal to a gas or electric pipe, since the connection
could cause an explosion or electric shock.
For radio communications, the antenna is of critical im-
portance, along with output power and receiver sensi-
tivity. Select antenna(s), such as a well-matched 50 Ω
antenna, and feedline. We recommend 1.5:1 or better
of Voltage Standing Wave Ratio (VSWR) for your de-
sired band. Of course, the transmission line should be
a coaxial cable.
When using 1 antenna, use the [ANT1] connector.
center
CAUTION:
ning 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 approximately 2.0:1, the trans-
ceiver's power drops to protect the final transistors.
In this case, an antenna tuner is useful to match the
transceiver and antenna. Low SWR allows full power
for transmitting. The IC-7800 has an SWR meter to
1 ⁄ in
16
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 to install the memory card correctly.
NEVER insert or remove the CF memory card
when the read/write indicator lights or blinks.
2-3
connect the [GND]
Protect your transceiver from light-
2