9
Northstar
Explorer VHF Series: 721/725
Operation and Installation Manual
Happy Fish symbol
with one to four indicator bars to show the probability
of good fishing at your current location, based upon barometric pressure and air
temperature. Four bars show that good fishing is likely. High pressure trends are
associated with stable conditions and calm seas. Research indicates that best fishing
occurs when barometric pressure is rising and between 1010 and 1022 mb. Dur-
ing these opportune conditions, most fish are thought to feed anywhere within
the water column. However, low pressure trends bring stormy seas and affect air
bladders, and these conditions make fish move to deeper levels and become less
active. See section 2-2 for more information.
Local weather forecast
based on the local temperature and stored barometric
pressure data. The icons are indicative only and are more accurate close to land
rather than in open sea.
Digital Readout
of the current barometric pressure (in mb or in/Hg) or the
current temperature (in ºC or ºF), depending upon your selection.
Baro Graph.
A histogram of barometric pressure readings over the past 24 hours.
The high-resolution histogram centres automatically if the range goes off scale.
Readouts are taken even when the engine and radio have been powered down
(with typically less than 3mA of current drain).
A typical operational display on the 721/725 base unit LCD:
A transmission on Channel 16 is
•
being made at high power using the
International channel bank.
Channel 16 is set as the Priority
•
channel.
The latitude and longitude of the
•
vessel and UTC time are shown.
3 bars by the Happy Fish indicates
•
rising barometic trends and
reasonable fishing conditions.
The weather indicates showery
•
conditions.
A typical operational display on the 701/705 Optional Handset LCD:
