Icom IC-A25C Service Manual

SECTION 1 SPECIFICATIONS
1-1
IC-A25N IC-A25C IC-A25NE IC-A25CE
GENERAL
Frequency coverage (Unit: MHz) TX 118.000~136.99166
RX 108.000~
136.99166
118.000~
136.99166
108.000~
136.99166
118.000~
136.99166
WX 161.650~163.275 –
Channel spacing 25 kHz/8.33 kHz
Type of emission 6K00A3E/5K60A3E,
16K0G3E (WX)
6K80A3E/5K00A3E
Number of memory channels 300 channels
Usable temperature range –10°C~+60°C, +14°F~+140°F –20°C~+55°C
Frequency stability ±0.4 kHz ±1 ppm
Power supply 7.2 V DC standard or 11.0 V DC at the external DC jack
Current drain (at 7.2 V DC)*
Transmit Less than 1.8 A
Receive (Maximum AF output) Less than 500 mA
(Standby)
90 mA typical
Antenna connector BNC (50 Ω)
Dimensions (projections not included) 58.9 (W)×148.4 (H)×31.8 (D) mm, 2.3(W)×5.8 (H)×1.3 (D) inches
Weight (approximately) 200 g, 7.1 oz (Without battery pack, battery case, and antenna)
TRANSMITTER
Modulation system
Low level modulation
Output power (at 7.2 V DC) PEP 6.0 W
Carrier Wave 1.8 W
Modulation limiting 70~100% –
Modulation depth – 85%
Spurious emissions
(AM: fc±62.5 kHz excluded, AM-N: fc±20.825 kHz excluded)
More than 46 dB –
Harmonics spurious emissions
(except ±1 MHz of the operating frequency)
– Less than –36 dBm
Audio harmonic distortion
Less than 10% (at 60% Mod.)
Less than 10%
(at 85% Mod. +3dB)
Ham and noise ratio More than 35dB –
Microphone impedance 150 Ω
RECEIVER
Receive system Double Conversion Superheterodyne
Intermediate frequencies 1st IF 46.35 MHz
2nd IF 450 kHz
Sensitivity COM
Less than 0 dBμ (at 6 dB S/N)
Less than 0 dBμ
(at 12 dB SINAD: with CCITT)
VOR Less than 0 dBμ
(at 6 dB S/N)
–
Less than 0 dBμ
(at 6 dB S/N)
–
WX Less than –8 dBμ
(at 12 dB SINAD)
–
Audio output power More than 350 mW with 60% Mod. at 10% distortion into an 8 Ω load
Adjacent Channel rejection – More than 60 dB
Ham and noise More than 35 dB at 30% Mod. More than 40 dB at 90% Mod.
Spurious response rejection ratio AM More than 60 dB More than 70 dB
FM (WX) More than 30 dB –
Squelch Sensitivity (threshold) COM/VOR Less than 0 dBμ
WX Less than –5 dBµ –
*When GPS, Bluetooth, and backlight are OFF.

Icom IC-A25C Specifications

General

Purpose	Aviation Service (Air Band)
Operating frequency	118.000 – 136.992 MHz
Display type	LCD
Display diagonal	2.3 \
Battery type	BP-288
Battery life (max)	10.5 h
Battery low indication	Yes
Number of batteries supported	1
Product color	Black
Operating temperature (T-T)	-10 - 60 °C
Number of batteries included	1 pc(s)
Antenna connector type	FA-B02AR

Weight and Dimensions

Depth	31.8 mm
Width	58.9 mm
Height	148.4 mm
Weight	384 g