43
Northstar
Explorer VHF Series: 721/725
Operation and Installation Manual
Track Your Buddy:
Yes
Group Call:
Yes
Call logs:
Yes - 20 individual and 10 distress
Barometer, Temperature
and Happy Fish:
Yes
Channel Naming:
Yes
Tri watch, favorite channel scan:
Yes
All scan:
Yes
User programmable MMSI:
Yes (User MMSI and ATIS (721/725 EU)
MMSI and NAME directory:
Yes - 20 numbers & group
TRANSMITTER
Frequency:
156.025 - 157.425 MHz
Output power:
25 W / 1 W selectable
Transmitter protection:
Open / short circuit of antenna
Max Freq deviation:
+/- 5 kHz
Spurious & harmonics:
better than @ 2.5 W
Modulation distortion:
Less than 4% @ 1 kHz for a +/-3 kHz deviation
RECEIVER
Frequency:
156.025 - 163.275 MHz
12 dB SINAD sensitivity:
0.25 uV (distant) / 2.5 uV (local)
Adjacent CH selectivity:
more than 70 db
Spurious response:
more than 70 db
Intermodulation rejection ratio:
more than 68 db
Residual Noise level:
more than -40 db unsquelched
Audio output power:
2 W (with 8 ohm at 10% distortion)
4 W with 4 ohm external speaker
Compass safe distance:
1.5' (0.5 m)
OPTIONAL HANDSET
Wired - with 3mtr cable:
VHF701US
Works only with Explorer 721US
VHF701EU
Works only with Explorer 721EU
Wireless - with desktop charger:
VHF705US
Works only with Explorer 725US
VHF705EU
Works only with Explorer 725EU
Power source
Built-in 3.7V 750mAH Lithium Ion rechargeable battery
Wireless:
ISM 2.4GHz FHSS
Range:
Approximately 150mtrs in ideal conditions
Specifications are subject to change without notice.