Icom IC-M21 Service Manual - Section 1 Specifications
1 - 1
All stated specifications are subject to change without notice or obligation.
Frequencycoverage
Mode
Power supply requirement
Usable temperature
Frequency stability
at 5 W
at 3 W
at 1 W
at 0.5 W
at maximum audio
at stand-by
Antenna impedance
Dimensions
(Projections not included)
Weight
(with antenna and BP-224)
RF output power (at 7.2 V DC)
Modulation system
Max. frequency deviation
Frequency error
Spurious emissions
Adjacent channel power
Residual modulation
Audio harmonic distortion
Audio frequency response
Microphone impedance
Receive system
Intermediate frequencies
Sensitivity
Squelch sensitivity
Adjacent channel selectivity
Spurious response
Intermodulation
Hum and noise
Audio output power ( at 7.4 V)
Audio frequency response
IC-M2A
IC-M21
RECEIVER
TRANSMITTER
GENERAL
Tx: 156.025 MHz–157.425 MHz
Tx: 156.000 MHz–161.450 MHz
Rx: 156.025 MHz–163.275 MHz
Rx: 156.000 MHz–163.425 MHz
16K0G3E (FM)
BP-224 (7.2 V DC)
–20 ˚C to +60 ˚C (–4˚F to +140˚F)
–15 ˚C to +55 ˚C (+5˚F to +131˚F)
± 10 ppm
± 1.5 kHz
1.5 A
1.2 A
0.7 A
0.6 A
[FRG] only
200 mA
20 mA
Type STUD / 50
Ω
61(W)
×
135H)
×
41(D) mm; 2
13
⁄
32
(W)
×
5
5
⁄
16
(H)
×
1
5
⁄
8
(D) inch (with BP-224)
360 g; 12.7 oz (approx.)
Hi power; 5 W
5 W / 3 W / 1 W (High / Mid / Low)
[OTHER]
Hi power; 1 W
1 W / 0.5 W (High / Low)
[FRG]
Variable reactance frequency modulation
± 5.0 kHz
± 10 ppm
± 1.5 kHz
–65 dBc
250 nW
60 dB
70 dB
40 dB
Less than 10 % at 60 % deviation
+ 1 kHz to –3 dB of 6 dB octave from 300 Hz to 3000 Hz
2 k
Ω
Double-conversion super heterodyne
1st: 21.70 MHz, 2nd: 450 kHz
0.25 µV at 12 dB SINAD
0.79 µV emf at 12 dB SINAD (typical)
0.35 µV
1.0 µV emf (typical)
70 dB (typical)
70 dB
70 dB (typical)
70 dB
70 dB (typical)
68 dB
40 dB
350 mW typical at 10 % distortion
200 mW at 10 % distortion
with an 8
Ω
load
with an 8
Ω
load
–3 dB to +1 dB of –6 dB octave from 300 Hz to 3000 Hz
Current drain
(with BP-224)
Tx
Rx
SECTION 1 SPECIFICATIONS
Measurements made in accordance with TIA/EIA-603 or EN-301-178-2.