Ground Connection; External Speaker Connection - Icom IC-R7000 Instruction Manual

• COAXIAL CABLE
Ill TYPE-N CONNECTOR iNSTALLATION
Solder hole
~
4- 4
GROUND CONNECTION
4-5 EXTERNAL SPEAKER
CONNECTION
(+)
(-)
Speaker
Impedance for any antenna used with the IC-R7000 should be 50
ohms. If a coaxial feedline is used between the antenna and receiver,
it should also have an impedance of 50 ohms.
To inhibit coaxial cable loss install a coaxial cable that is as thick as
possible since coaxial cable loss increases as frequency increases. This
is particularly important with the IC-R7000 because of its ability to
receive high frequency signals at levels greater than 1200MHz.
Follow the procedure below for connecting cables with a coaxial
cable:
1) Slide the nut, washer, gasket and clamp over the coaxial cable and
cut the end of the cable evenly.
2) Cut and remove 15mm of the outer vinyl jacket, and fold the
braid back over the clamp. The clamp end should be flush with
the end of the vinyl jacket. Trim the bJaid ends evenly.
Cut and remove 6mm of the dielectric (center conductor insula-
tion).
3)
Soft-solder the center conductor. Install cent.er conductor pin
and solder.
4) Carefully slide the plug body into place, aligning the center
conductor pin on the cable with the hole in the insulator inside
the plug body.
5) Complete the assembly by screwing the nut into the plug body.
To prevent accidents involving electricity and interference from
other machines, bury a commercially-available earthing rod or
copper plate in the ground and connect it to the rear panel
GROUND TERMINAL.
Make sure the thickest possible lead is used,and also be sure the lead
is as short as possible, covering the shortest distance from the
grounding rod to the GROUND TERMINAL.
CAUTION: It is extremely dangerous to use gas pipes or electri-
cal wiring for earthing purposes. Never ground your
receiver using these!
An external speaker can be connected to the IC-R7000 by using the
EXTERNAL SPEAKER JACK. For ideal audio clarity use an
external speaker with 8 ohms impedance. For your convenience a
connector plug comes with the IC-R7000.
When connected to an external speaker, the IC-R7000's internal
speaker will not operate.
Connect the external speaker to the supplied connector plug as
shown in the diagram.
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