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SECTION 1. SPECIFICATIONS
P
GENERAL
• Frequency coverage
: (Refer to the "
INTRODUCTION
")
• Mode
: FM
• Channel spacing
: (Refer to the "
INTRODUCTION
")
• Number of conventional channels
: 16 ch/2 ch (Refer to the "
INTRODUCTION
")
• Antenna impedance
: 50
Ω
• Operating temperature range
: –30˚C to +60˚C (–22˚F to +140˚F)
Other than [F25/S
]
–25˚C
to
+55˚C
[F25/S]
• Power supply requirement
: Specified Icom's battery pack only (7.2 V DC nominal; negative ground)
• Current drain (at 7.2 V DC ; approx.)
:
RECEIVING
TRANSMITTING
Stand-by
Max. audio
High (at 4 W)
Low (at 1 W)
75 mA
300 mA
1.6 A
0.8 A
• Dimensions (projections not included)
: 53.0 (W)
×
120.0 (H)
×
38.0 (D) mm; 2
3
⁄
32
(W)
×
4
23
⁄
32
(H)
×
1
1
⁄
2
(D) in
• Weight (Including BP-231)
: Approx. 260 g (9
3
⁄
16 oz
)
P
TRANSMITTER
• Output power (at 7.2 V DC)
: 4 W (Hi)/2 W (L2)/1 W (L1)
• Modulation
: Variable reactance frequency modulation
• Maximum permissible deviation
: ±5.0 kHz (Wide), ±4.0 kHz (Middle), ±2.5 kHz (Narrow)
• Frequency error
: ±2.5 ppm
• Spurious emissions
: 70 dB (min.)
Other than [F25/S
]
0.25 µW (
≤
1 GHz), 1.0 µW (> 1 GHz)
[F25/S]
• Adjacent channel power
: 70 dB min. (75dB typ.) for Wide
70 dB min. (73dB typ.) for Middle
60 dB min. (68dB typ.) for Narrow
• Audio harmonic distortion
: 3% typ. (1 kHz, 40% deviation)
•
FM Hum and Noise (without CCITT filter) : 40 dB min. (46 dB typ.) for Wide
(Other than [F25/S
]
)
34 dB min. (40 dB typ.) for Narrow
• Residual modulation (with CCITT filter) : 45 dB min. (55 dB typ.) for Wide
([F25/S] only)
43 dB min. (53 dB typ.) for Middle
40 dB min. (50 dB typ.) for Narrow
• Limiting charact of modulator
: 60–100% of maximum deviation
• Microphone impedance
: 2.2 k
Ω
P
RECEIVER
• Receive system
: Double conversion superheterodyne system
• Intermediate frequencies
: 1st IF: 46.35 MHz, 2nd IF: 450 kHz
• Sensitivity
: 0.25 µV (–119 dBm) typ. at 12 dB SINAD
Other than [F25/S]
–4 dBµV (–111 dBm) emf typ. at 20 dB SINAD [F25/S]
• Adjacent channel selectivity
: 70 dB min. (75 dB typ.) for Wide
70 dB min. (73 dB typ.) for Middle
60 dB min. (65 dB typ.) for Narrow
• Spurious response
: 70 dB min.
• Intermodulation rejection ratio
: 70 dB min. (74 dB typ.)
Other than [F25/S]
65 dB min. (67 dB typ.)
[F25/S]
•
Hum and Noise (without CCITT filter)
: 40 dB min. (45 dB typ.) for Wide
(except [EUR] and [CHN])
34 dB min. (40 dB typ.) for Narrow
•
Hum and Noise (with CCITT filter)
: 45 dB min. (55 dB typ.) for Wide
([EUR] and [CHN] only)
43 dB min. (53 dB typ.) for Middle
40 dB min. (50 dB typ.) for Narrow
• Audio output power
: 0.5 W typ. at 5% distortion with an 8
Ω
load
• Squelch sensitivity (at threshold)
: 0.25
µV
typ.
Other
than
[F25/S]
–4 dBµV emf typ.
[F25/S]
• Output impedance (Audio)
: 8
Ω
Specifications are measured in accordance with EIA-152-C/204D, TIA-603, EN 300 086 or GB/T 15844. 1-1995.
All stated specifications are subject to change without notice or obligation.
Summary of Contents for IC-F24/S
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Page 19: ...Feb 2009 SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 VOLTAGE DIAGRAM 11 Feb 2009...
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