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IC-746
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Features
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- Spectrum Scope
- 102 Memories
- RIT/XIT
- Noise Blanker
- VOX Function
- Selectable APF
- Dual Display
- 100 Watt Output
- 40 Watt Output (AM)
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- Built-in Automatic Antenna Tuner
180-6 Meters
- Full Break-In CW
- CW Keyer
- 100% Duty Cycle
- Rx Antenna Jack
- DSP Notch
- 1 Hz Readout
- Memory Keyer
- RF Attenuator 6/12/18 dB
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The Icom IC-746 covers
160-10
meters plus 6
and 2 meters. 100 Watts of output is available on all
bands - HF, 50
MHz and 144 MHz, making the IC-746 a practical choice
for all-around
base station use. The die-cast aluminum chassis and a
large cooling fan
help to stabilize the PA circuit, providing 100% full
duty cycle
operation. It has 100 alphanumeric memories, spectrum
display, Twin
PBT, CTCSS encode/decode, APF, two stage preamp,
keypad
entry,
automatic antenna tuner and electronic keyer. DSP
digitally transposes
receive audio components in all modes of operation to
produce desired
AF frequency characteristics at the IF stage of the
transceiver. This
built-in DSP provides: noise reduction,
automatic notch filter
and selectable APF. The digital bar graph meter
displays ALC, power
output and SWR simultaneously! The radio automatically
selects from the
three separate antenna inputs (HF, 6 meters, 2
meters). A built-in
automatic antenna tuner operates on the HF bands plus
6 meters. The
rear
panel has three antenna jacks. The 746 requires 12 VDC
at 20 amps.
The IC-746 comes with HM-36 hand
mic,
spare fuses, DC power cable and key plug.
11.3x4.8x12.5 inches. 20 Lbs.
Doccumentatuon :
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Owner's Manual - PDF
OM Addendum - PDF
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Specifications
| General |
- Frequency
Coverage:
- Receive:
0.030 -
60.000 MHz, 144-148*1*2
- Transmit:
- 1.800
-
1.999 MHz*2
- 3.500
-
3.999 MHz*2
- 7.000
-
7.300 MHz*2
- 10.100 -
10.150 MHz
- 14.000 -
14.350 MHz
- 18.068 -
18.168 MHz
- 21.000 -
21.450 MHz
- 24.890 -
24.990 MHz
- 28.000 -
29.700 MHz
- 50.000 -
54.000
MHz*2
- 144.000 -
148.000
MHz*2
- *1 Except
for some
frequency ranges
- *2
Depending on
version
- Mode: USB,
LSB, CW,
RTTY, AM, FM
- Number of
Memory
Channels: 102 (99 regular, 2 scan edges and
1 call)
- Antenna
Connector:
SO-239x3 [2 for HF + 1 for 144 MHz bands;
50]
- Usable
Temperature
Range: -10�C to
+60�C;
+14�F to
+140�F
- Frequency
Stability: Less than �7
ppm from 1 min. to 60 min.
after power ON.
After that, the rate of stability change is
less than
�1 ppm at
+25�C;
+77�F. Temperature
fluctuations 0
�C to
+50�C
(+32�F to +
122�F) less
than �5 ppm.
- Power Supply
Requirement: 13.8 V DC
(�15% negative ground)
- Current Drain
(at 13.8
V DC): Transmit max. power: 20A
- Receive
standby:
2.5A
- max.
audio: 2.7A
- Dimensions
(approx):
287(W) x 120(H) x 316.5(D) mm, 11.3(W) x
4.75(H) x 12.5(D) in
(projections not included)
- Weight
(approx): 8.9
kg; 19.625 lb.
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| Transmitter |
- Output Power:
- SSB/CW/RTTY/FM:
5-100
W
- AM: 2-40 W
- Modulation
System:
- SSB, AM:
Balanced
modulation
- FM:
Variable
reactance modulation
- Spurious
Emissions: -50
dB (HF), -60 dB(50/144MHz)
- Carrier
Suppression:
More than 40 dB
- Unwanted
Sideband
Suppression: More than 50 dB
- Delta TX
Variable
Range: �9.999 kHz
- Microphone
Connector:
8-pin connector (600 ohms)
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| Receiver |
- Sensitivity:
- SSB, CW,
RTTY (10
dB S/N):
- 0.16
�V (1.8-29.99
MHz)*1
- 0.13
�V (50MHz)*2
- 0.11
�V (144 MHz)*3
- AM (10 dB
SINAD):
- 13
�V (0.5-1.799
MHz)
- 2.0
�V (1.80-29.99
MHz)*1
- 1.0
�V (50/144
MHz)*2,3
- FM (12 dB
SINAD):
- 0.5
�V (28.0-29.99
MHz)
- 0.25
�V (50 MHz)*2
- 0.18
�V (144 MHz)*3
- *1 Pre-amp
1 ON,
*2Pre-amp 2 ON, *3Pre-amp ON
- Squelch
Sensitivity:
- USB, LSB,
CW, RTTY
- Less than 5.6 �V
- FM - Less
than 1.0
�V
- Selectivity:
- USB, LSB,
CW, RTTY
- More than 2.1 kHz/-6 dB ; Less than
4.0 kHz/-60 dB
- AM, FM-N -
More
than 9.0 kHz/-6 dB ; Less than 20
kHz/-40 dB
- FM - More
than 12
kHz/-6 dB ; Less than 30 kHz/-50 dB
- Spurious and
Image
Rejection Ratio: More than 70 dB (except IF
through in 50 MHz band)
- RIT Variable
Range:
�9.999 kHz
- Audio Output
Power (at
13.8 V DC): More than 2.0 W at 10%
distortion with an 8 ohm load
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