![background image](http://html.mh-extra.com/html/icom/ic-455/ic-455_instruction-manual_612156043.webp)
37
10
9
15
18
13
11
16
14
12
17
1
7
4
2
8
5
3
6
10
SPECIFICATIONS AND OPTIONS
■
Specifications
L
All stated specifications are subject to change without notice or obligation.
General
Frequency coverage
CB
476.4250 ~ 477.4125 MHz
RX
400.0000 ~ 520.0000 MHz (RX only)
Number of channels
Maximum 256ch/8 banks
Mode
8K50F3E
Antenna impedance
50 Ω nominal
Input impedance (Microphone)
600 Ω
Output impedance (Audio)
4 Ω
Intermediate frequency
1st: 49.95 MHz, 2nd: 450 kHz
Operating temperature range
–10°C ~ +60°C
Power supply voltage
13.8 or 27.6 V DC nominal (Negative ground)
Current drain
with HM-244
(approximate)
DC 13.8 V
RX stand-by 500 mA
RX Maximum audio 1500 mA
TX (5 W) 3000 mA
DC 27.6 V
RX stand-by 300 mA
RX Maximum audio 1000 mA
TX (5 W) 1500 mA
Dimensions (approximate)
(projections not included)
125 (W) × 28.6 (H) × 159.5 (D) mm
Weight (approximate)
535 g (with HM-244)
Transmitter
Output power
5 W/1 W (selectable)
Modulation system
Frequency modulation
Maximum frequency deviation
±2.5 kHz
Frequency error
±2.5 ppm
Spurious emissions
Less than –30 dBm
Adjacent channel power
Less than –16 dBm
Audio frequency response
+2 dB ~ –8 dB of 6 dB octave from 300 Hz ~ 2550 Hz
Audio harmonic distortion
1% typical (60% deviation)
Residual modulation
40 dB typical
Limiting characteristic of modulator
70 ~ 100% of maximum deviation
Receiver
CB
(476.4250 ~ 477.4125 MHz)
RX
(400.0000 ~ 520.0000 MHz)
(Except CB (476.4250 ~
477.4125 MHz))
Sensitivity (12 dB SINAD)
0.22 μV typical
0.25 μV typical
Audio output power
5 W maximum at 10%
distortion with a 4 Ω load
–
Adjacent channel selectivity
68 dB typical
–
Spurious response rejection ratio
80 dB typical
–
Intermodulation rejection ratio
72 dB typical
–