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Measurement Conditions
Frequency range:transmit
MHz
156.025 To 157.425
Frequency range:receive
MHz
156.050 To 162.025
Number of channels
59 INT Channels
57 USA Channels
57 Canada Channels
Memory channels
All marine channels
Oscillate mode
PLL
Modulation
FM(16K0G3E)
Channel spacing
KHz
25
Frequency stabllity
PPM
±10
Stantard operation temperature
°C
-20 To+55
Normal working voltage
V
7.2 (With 6 AA Ni MH Battery)
Low limit working voltage
V
6.3
Battery lifetime(Tx5%/Rx5%/Standby90%)
Hour
12.0 ( 7.2V / 1500mAH )
Memory retented
EEPROM
Antenna socket
TNC
Display
LCD With Backlight
Built-ln speaker
Diamter 40mm / Impedance 8 Ohm
Dimension:
64mm(W)×135mm(H)×38.5mm(D)
Weight (without battery):
250g
RECEIVER
UNIT
LIMIT
Sensitivity for 12dB sinan
dBm
≤
-118
Squelch
a) squelch threshold
dBm
≤
-120
b) squelch tight
dBm
-113 ~ -107
c) hysteresis ( tight )
dB
2 ~ 7
Rated audio output
@5% Thd speaker
mW
≥
250
Deviation sens.for rated output (VR @ max.)
±kHz
≤
2.5
Max.S/N ratio @ 1mV
dB
≥
40
Audio frequency resp.
@300HZ
dB
9 ± 3
@2500HZ
dB
-11 ± 3
Spurious response rejection
10MHz to 1GHz
SPECIFICATIONS
2
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 ...