Icom IC-725 Service Manual page 4

GENERAL
•
Frequency coverage Receive
500
kHz~30
MHz
Transmit
160-mband
1.8~
2.0
MHz
17-m band 18.068~18.168
MHz
80-m band
3.5~
4.0
MHz
15-m band
21.0
~21.45MHz
40-mband
7.0~
7.3
MHz
12-m band 24.89
—24.99 MHz
30-mband 10.1—
10.15
MHz
10-m band
28.0
—29.7
MHz
20-m band
14.0—14.35
MHz
•
Modes
:
SSB
(A3J),
CW
(A1).
AM
(A3),
FM
(F3)
(Ul-7
AM
•
FM
UNIT
is
required
for
AM
transmit
and
FM
transmit/receive.)
•
Number
of
memory
channels 26
•
Antenna impedance 50
Cl
unbalanced
•
Usable temperature range
—
10
°C— +60
"C
(+14
°F—
+
140
°F)
•
Frequency
stability
Less than
±200 Hz
up
to
one
hour
after
power
is
turned
ON.
Less than
±30
Hz
after
one hour
at
+25
°C
(+77
°F).
Less than
±350 Hz
at
0
°C-
+
50
°C
(+32
°F-
+
122
°F).
•
Power
supply requirement 13.8
V
DC ±15
%, negative
ground
•
Current
drain
(at
13.8
V
DC) Receive squelched
1.2
A
max.
audio output 1.5
A
Transmit
20
A
• Dimensions
:
241
(W)x94 (H)x239
(D)
mm
(projections not included)
9.5
(W)
X
3.7
(H)x 9.4(D)
in
• Weight 4.6 kg
(10.1
lb)
TRANSMITTER
• Output
power
SSB.
CW,
FM
10—
100
W
continuously adjustable
AM
10—40
W
continuously adjustable
• Spurious emissions
More
than
50
dB
below peak output
power
•
Carrier
suppression
More
than
40
dB
below peak
output
power
•
Unwanted sideband
More
than 50
dB down
with
1
kHz
AF
input
•
Microphone impedance
:
600
Cl
RECEIVER
•
Receive system SSB,
CW,
AM
Double-conversion superheterodyne
FM
Triple-conversion
superheterodyne
• Intermediate frequencies
1st
SSB
70.4515
MHz
CW
70.4506
MHz
AM,
FM
70.4500
MHz
2nd
SSB
9.0115
MHz
CW
9.0106
MHz
AM.
FM
9.0100
MHz
3rd
FM
455 kHz
• Sensitivity (preamplifier
ON)
SSB,
CW
(10
dB
S/N)
1.8— 30
MHz
Less than 0.15
pV (—123 dBm)
AM
(10
dB
S/N)
0.5-1.8
MHz
Less than
13.0
pV (-85 dBm)
1.8—30
MHz
Less than
2.0
pV (-101 dBm)
FM
(12
dB SINAD)
28—30 MHz
Less than 0.5
pV (-113 dBm)
•
FM
squelch
sensitivity
Less than
0.3
pV
(prearfiplifier
ON)
• Selectivity
;
SSB,
CW
More
than 2.3
kHz/-
6
dB
Less than 4.0
kHz/
-60
dB
AM
More
than
6.0
kHz/—
6
dB
Less than 20.0
kHz/—
40
dB
FM
More
than
15
kHz/—
6
dB
Less than
30
kHz/— 50
dB
• Spurious response
rejection
More
than
70
dB
• Audio
output
impedance
8
Cl
• Audio output
power
More
than 2.6
W
at
10
%
distortion
with
an
8
£5
load
•
RIT variable
range
More
than
±
1
kHz
All
stated specifications
are subject
to
change
without notice or obligation.
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