Icom IC-F21 Service Manual page 4

SECTION 1
' ' GENERAL
• Frequency coverage
• Type of emission
• Number of channels
• Power supply requirement
• Current drain (approx.)
• Frequency stability
• Usable temperature range
• Dimensions (projections not included)
• Weight (with ant., BP-209)
' ' TRANSMITTER
• RF output power (at 7.2 V DC)
(with supplied battery pack)
• Modulation system
• Maximum frequency deviation
• Spurious emissions
• Adjacent channel power
• Transmitter audio harmonics distortion
• Limitting charact of modulator
• FM Hum and Noise
• Ext. microphone connector
' ' RECEIVER
• Receive system
• Intermediate frequencies
• Sensitivity
• Squelch sensitivity
• Adjacent channel selectivity
• Spurious response rejection
• Intermodulation rejection ratio
• Hum and noise (EIA only)
• Audio output power (at 7.2 V DC)
• Ext. speaker connector
Specifications are measured in accordance with EIA/TIA-603.
All stated specifications are subject to change without notice or obligation.
SPECIFICATIONS
: 440.000–470.000 MHz
: 16K0F3E (at 25 kHz), 8K50F3E (at 12.5 kHz)
: 2 ch (IC-F21S), 16 ch (IC-F21)
: 7.2 V DC (negative ground)
: Transmit
Receive
: ±0.00025 %
: –30˚C to +60˚C; –22˚F to +140˚F
: 54(W) 132(H)
: 310 g; 10.9 oz.
: 4 W / 2 W / 1 W (High / Low2 / Low1)
: Variable reactance frequency modulation
: ±5.0 kHz (at 25 kHz), ±2.5 kHz (at 12.5 kHz)
: 73 dBc (typical)
: 70 dB typical (at 25 kHz), 60 dB typical (at 12.5 kHz)
: Less than 3% typical at 1 kHz, 40% deviation
: 70–100% of max. deviation
: 46 dB typical (at 25 kHz), 40 dB typical (at 12.5 kHz)
: 3-conductor 2.5 (d) mm (
: Double conversion superheterodyne system
: 1st
2nd
: 0.25 µV at 12 dB SINAD (typical)
: 0.3 µV at threshold (typical)
: 70 dB typical (at 25 kHz), 65 dB typical (at 12.5 kHz)
: 70 dB (typical)
: 70 dB (typical)
: 46 dB typical (at 25 kHz), 40 dB typical (at 12.5 kHz)
: 500 mW typical at 5% distortion with an 8 Ω load
600 mW typical at 5% distortion with an 6 Ω load
: 2-conductor 3.5(d) mm (
at High (4.0 W) 1.6 A
at Low2 (2.0 W) 1.2 A
at Low1 (1.0 W) 0.8 A
rated audio 250 mA
stand-by 70 mA
37(D) mm; 2 1 ⁄ (W)
8
1 ⁄ ")/2.2 kΩ
10
46.35 MHz
450 kHz
")/8 Ω
1 ⁄
8
1 - 1
5 1 ⁄ (H) 1 15 ⁄ (D) in.
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