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78.4MHz
dB
≥
46
39.2/ 146.8/ 154.4/ 155.9/
157.8/ 158.2/ 163.9/ 249.4MHz
dB
≥
50
Other frequency
dB
≥
70
Adjacent ch.rejection
dB
≥
55
Image rejection
dB
≥
65
Intermod rejection ( 3-Gen.Method )
dB
≥
60
Scan time. per channel
ms
≤
200
Speaker output:8
Ω
load @ max vol.
mW
≥
400
StandBy current
mA
≤
50
Receiver current @ max vol.
mA
≤
200
Charging current
mA
180 mA ± 50
TRANSMITTER
UNIT
LIMIT
Carrier power(no mod)
Hi mode
W
5±0.8
Mid mode
W
3±0.5
Lo mode
W
0.8±0.2
Carrier frequency tolerance
ppm
± 10
Modulation limiting
±kHz
4.3~ 4.9
Modulation sens.for ±3 kHz dev.
mV 7±3
Audio frequency response (1KHz/0dB ref )
@300HZ
dB
-12 ± 3
@2500HZ
dB
+6 ± 3
Audio distortion @ 2.5 khz dew.
%
≤
5
Hum and noise ratio
dB
≥
35
Spurious emission
dBm
≤
- 36
Current drain (TX)
Hi mode
A
≤
2
Mid mode
A
≤
1.5
Lo mode
A
≤
0.9
Mic modulation sen.(at sound level of 94 dBA )
±kHz
≥
1.5
Mic modulation limiting(at sound level of 110 dBA )
±kHz
4.0 ~ 4.9
Note:
All units should be able to approximate these specs. Some will exceed these specs, and others
may drop slightly below them. Limit specs represent the absolute worst condition that might still be
considered acceptable. A unit never fail to meet limit specs.
3
Summary of Contents for MR HH425 LI VP
Page 7: ...BLOCK DIAGRAM BACKLIGHT BACKLIGHT 7 ...
Page 11: ...Main PCB Top View Bottom View VR3 VR2 VC1 L44 L46 SQL L45 11 ...
Page 12: ...WIRING DIAGRAM CHARGER CHARGER 12 ...
Page 13: ...Main PCB Top View PRINTED CIRCUIT BOARD SQL 13 ...
Page 14: ...Main PCB Bottom View PRINTED CIRCUIT BOARD 14 ...
Page 15: ...Charger PCB PRINTED CIRCUIT BOARD Top View Bottom View LCD PCB Bottom View Top View 15 ...
Page 18: ...MAIN UNIT EXPLODED VIEW 18 ...
Page 19: ...CHARGER UNIT EXPLODED VIEW 19 ...
Page 20: ...BATTERY TRAY UNIT EXPLODED VIEW 20 ...
Page 48: ...U4 9032 HT D 48 ...
Page 49: ...U5 M38C29FFAHP60K 49 ...
Page 50: ...2 1 3 1 VOUT 2 VSS 3 VIN Delay Circuitry Vref VSS VOUT VIN U6 XC61FC4012MR U7 U8 U9 NJM324 50 ...
Page 51: ...1 2 3 4 8 7 6 5 A0 A1 A2 GND VCC WP SCL SDA U AT C N 11 24 16 U12 XC6204B502MR 51 ...