User's Manual

Table Of Contents
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.