Specifications - Icom ID-31A Service Manual

SECTION 1.
D General
• Frequency coverage :
Version TX
U.S.A. 420–450* 1
AUS 420–450* 2
EUR, KOR 430–440
UK 430–440
ITR 430–434, 435–438
EXP 400–479* 2
EXP-1 430–440
* 1 Guaranteed 440–450 MHz only, *
• Mode : FM, FN-N, DV
• No. of memory channels : 552
(incl. 50 scan edges and 2 call channels)
• Usable temp. range : –20°C to +60°C; –4°F to +140°F
• Tuning steps : 5, 6.25, 10, 12.5, 15, 20, 25, 30, 50,
100, 125 and 200 kHz
• Frequency stability : ±2.5 ppm
(–20°C to +60°C; –4°F to +140°F)
• Power supply : 10.0–16.0 V DC for external DC power,
or specifi ed Icom's battery pack
• Digital transmission speed : 4.8 kbps
• Voice coding speed : 2.4 kbps
• Current drain :
(at 7.4 V DC)
TX (at 5 W) Less than 2.5 A
RX Max. output FM Less than 350 mA (Internal speaker)
Less than 200 mA (External speaker)
DV Less than 450 mA (Internal speaker)
Less than 300 mA (External speaker)
: SMA (50 Ω)
• Antenna connector
• Dimensions : 58(W)×95(H)×25.4(D) mm;
2.3(W)×3.7(H)×1(D) in
(projections not included)
• Weight : 140 g; 4.94 oz
(approximately)
( without battery pack/case and ant. )

SPECIFICATIONS

(unit: MHz)
RX
400–479* 1
400–479* 2
430–440
2
400–479*
430–434, 435–438
400–479* 2
2
400–479*
2 Guaranteed 430–440 MHz only
1 - 1
D
Transmitter
• Modulation system :
FM Variable reactance freq. modulation
DV GMSK reactance freq. modulation
• Output power : High 5.0 W, Mid. 2.5 W, Low 0.5 W,
(at 7.4 V DC)
(Typical) S-Low 0.1 W
• Max. frequency deviation : ±5.0 kHz
±2.5 kHz
• Spurious emissions : Less than –60 dBc at High/Mid.
Less than –13 dBm at Low/S-Low
• Ext. mic. impedance : 2.2 kΩ
D
Receiver
• Receive system : Double-conversion superheterodyne
• Intermediate frequencies : 46.35 MHz (1st IF)
450 kHz (2nd IF)
• Sensitivity
(except spurious points)
FM
(1 kHz/3.5 kHz Dev.; 12 dB SINAD)
DV
(PN9/GMSK 4.8 kbps; BER 1%)
• Audio output power (at 10% distortion)
: More than 0.4 W with a 16 Ω load
Internal speaker
: More than 0.2 W with a 8 Ω load
External speaker
• Selectivity :
FM More than 55 dB
(Wide)
FM , DV More than 50 dB
(Narrow)
• Ext. speaker connector : 3-conductor 3.5(d) mm; (
• Spurious and image rejection ratio :
More than 60 dB
• Squelch Sensitivity threshold,
(
Less than –15 dBµ
All stated specifi cations are subject to change without notice or obligation.
(FM wide: approx.)
(FM narrow: approx.)
:
Less than –15 dBµ
Less than –11 dBµ
˝)/8 Ω
1
⁄
8
):
1 kHz/3.5 kHz Dev.