Icom IC-725 Instruction Manual

INSTALLATION
OF OPTIONS
9
9-4
CR-64
HIGH-STABILITY
CRYSTAL
UNIT
By replacing the
original crystal unit
with this
unit, the
total
frequency stability
of the transceiver will be
improved.
PA
UNIT
CR-64
frequency stability:
±0.5 ppm
(-30°C~+60°C,
-22°F~+140°F)
1)
Remove covers
and
the
PLL UNIT
following
the
disassembly
procedures on
p.
24.
2)
Remove the
crystal
unit
from the
P.C. board
(PLL
UNIT).
3)
Unsolder the 4
positions
on the
P.C. board where the
CR-64
will be
installed. Use a
de-soldering
braid.
4)
Install
the
unit
flush
with
the
P.C. board and in the
proper
direction.
•
For
correct
installation,
symbols
on the bottom of
the CR-64
must be
identically
matched with
sym-
bols
on the
P.C. board.
5)
Bend
the unit leads
flush
with the
foil
side of the P.C.
board and
solder
them.
6)
Trim
the leads
even with
the
solder points.
7)
Replace the
P.C. board
and
covers.
9-5
MB-23 CARRYING
HANDLE
The
handle allows
you to easily carry
and transport
the
transceiver.
Attach
the
MB-23
as
shown
in the
diagram.
NOTE:
Supplied
screws
with
the MB-23
CANNOT
be used with
the
IC-725.
Please
use the
screws supplied
in the IC-725
unpacking
to
correctly
attach the MB-23.

Icom IC-725 Specifications

General

Brand	Icom
Model	IC-725
Category	Transceiver
Language	English