Specifications - Icom IC-M23 Service Manual

SECTION 1.
M
IC-M23
D GENERAL
• Frequency coverage : Transmitting 156.000–161.450 MHz
Receiving
• Mode : FM (16K0G3E)
: 50 Ω (nominal)
• Antenna impedance
• Power supply requirement : BP-266 only (3.7 V DC nominal; negative ground)
• Current drain (approximately) : TX (5 W/1.0 W/0.5 W)
Maximum audio
Power save
• Frequency stability : ±1.5 kHz
• Operating temperature range : –15°C to +55°C
: 58.5 (W) × 128.5(H) × 34.5(D) mm
• Dimensions
(Projections not included)
• Weight : Approximately 260 g
(including battery pack, antenna, belt clip)
D TRANSMITTER
• Output power : 5 W (approx.; High)/1 W (Low)/0.5 W (E_Low)*
* 1 W (High) and 0.5 W (Low) for German
version, depending on the pre-programmed
setting
• Modulation system : Variable reactance frequency modulation
• Maximum frequency deviation : ±5 kHz
• Adjacent channel power : 70 dB
• Spurious emissions : 0.25 µW
• Audio harmonic distortion : 10% (at 60% deviation)
• Residual modulation : 40 dB
• Audio frequency response : +1 dB to –3 dB of 6 dB oct. from 300–3000 Hz
D RECEIVER
• Receive system : Double-conversion superheterodyne
• Intermediate frequency : 1st 21.7 MHz, 2nd 450 kHz
• Sensitivity (20 dB SINAD) : –4 dBµ emf typical
• Squelch sensitivity : –5 dBµ emf typical (at threshold)
• Intermodulation : 68 dB
• Hum and noise : 40 dB
• Audio frequency response : +1 dB to –3 dB of –6 dB oct. from 300–3000 Hz
• Spurious response : 70 dB
• Adjacent channel selectivity : 70 dB
• Audio output power (8 Ω)
: 0.2 W (at 1 kHz, 10% distortion)

SPECIFICATIONS

156.000–163.425 MHz
2.3 A/0.9 A/0.7 A
0.35 A typical
8 mA typical
1 - 1
M
IC-M24
D GENERAL
• Frequency coverage : Transmitting
Receiving
• Mode : FM (16K0G3E)
: 50 Ω (nominal)
• Antenna impedance
• Power supply requirement : BP-266 only (3.7 V DC nominal; negative ground)
• Current drain (approximately) : TX (5 W/1.0 W)
Max. audio
Power save
• Frequency stability : ±10 ppm
• Operating temperature range : –20°C to +60°C; –4°F to +140°F
: 58.5 (W) × 128.5(H) × 34.5(D) mm
• Dimensions
2.3 (W) × 5.6 (H) × 1.3 (D) inch
(projections not included)
• Weight : Approximately 260 g; 9.2 oz
(including battery pack, antenna and belt clip)
D TRANSMITTER
• Output power : 5 W (approximately; High) and 1 W (Low)
• Modulation system : Variable reactance frequency modulation
• Maximum frequency deviation : ±5 kHz
• Adjacent channel power : 70 dB
• Spurious emissions : –68 dBc typical
• Residual modulation : 40 dB
• Audio frequency response : +1 dB to –3 dB of 6 dB oct. from 300–3000 Hz
D RECEIVER
• Receive system : Double-conversion superheterodyne
• Intermediate frequency : 1st 21.7 MHz, 2nd 450 kHz
• Sensitivity (12 dB SINAD) : 0.25 µV typical
• Squelch sensitivity : 0.35 µV typical (at threshold)
• Intermodulation : 70 dB typical
• Spurious response : 70 dB typical
• Adjacent channel selectivity : 70 dB typical
: 8 Ω
• Audio output impedance
• Audio output power : 0.6 W typical (at 10% distortion)
All stated specifi cations are subject to change without notice or obligation.
156.025–157.425 MHz
156.050–163.275 MHz
2.3 A/0.9 A
0.35 A typical
8 mA typical