Icom IC-M401E, Service Manual

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SECTION 1 SPECIFICATIONS
‘ ‘ GENERAL
• Frequency coverage : 156.000–161.450 MHz (Tx)
156.000–163.425 MHz (Rx)
• Mode : 16K0G3E (FM)
16K0G2B (DSC)
• Power supply requirement : 13.8 V DC (negative ground)
• Usable temperature range : –20˚C to +60˚C
• Frequency stability : ±10 ppm (–20˚C to +60˚C)
• Current drain (at 13.8 V DC) : Transmit at 25 W 5.5 A (max.)
Receive max. audio 1.5 A (max.)
• Antenna impedance : 50
Ω
(nominal)
• Input impedance (MIC) : 2 k
Ω
• Output impedance (Audio) : 4
Ω
• Dimensions (projections not included) : 153(W)
×
67(H)
×
141.6(D) mm
• Weight (approx.) : 950 g
‘ ‘
TRANSMITTER
• Output power (at 13.8 V DC) : High 25 W
Low 1 W
• Modulation : Variable reactance frequency modulation
• Maximum frequency deviation : ±5.0 kHz
• Spurious emissions : Less than 0.25 µW
• Adjacent channel power : More than 70 dB
• Residual modulation : More than 40 dB
• Audio harmonic distortion : Less than 10% at 60% deviation
• Audio frequency response : +1 dB to –3 dB of 6 dB octave from 300 Hz to 3000 Hz
‘ ‘ RECEIVER
• Receive system : Double conversion superheterodyne system
• Intermediate frequencies : 1st 21.7 MHz
2nd 450 kHz
• Sensitivity : Less than –2 dBµ emf typical at 20 dB SINAD
• Squelch sensitivity : Less than 0 dBµ emf typical
• Adjacent channel selectivity : More than 70 dB
• Spurious response : More than 70 dB
• Intermodulation rejection ratio : More than 70 dB
• Hum and noise : More than 40 dB
• Audio frequency response : +1 dB to –3 dB of –6 dB octave from 300 Hz to 3000 Hz
Specifications are measured in accordance with EN301 025-2, -3
All stated specifications are subject to change without notice or obligation.