NEW 50 CHANNEL GPS SIDE IMAGING SONAR – Johnson Outdoors UK

NEW 50 CHANNEL GPS SIDE IMAGING SONAR
SEAWORK EXHIBITION 16th-18th JUNE STAND S52/BERTH A54

The latest model of Side Imaging Sonar from Johnson Outdoors UK uses a 50 channel GPS/WAAS receiver to give lightning fast position fixes accurate to within 2.5 metres. The Humminbird 798c SI Combo, part of the user-friendly 700 series of fishfinders, also incorporates Humminbird’s unique side imaging sonar system. This gives outstanding pictorial images of the seabed scanning up to 240 feet either side of the boat.

Like all Humminbird fishfinders these units are waterproof to IPX7 standard and are ideal for RIBs or inshore survey vessels. The new unit is available with either an internal or external 50 channel GPS receiver which can sweep the sky faster for satellite signals. It is also more sensitive so it can keep a fix when the signal is poor, for example when going under a bridge.

The internal GPS is mounted at the top of the control head allowing the sonar to be flush mounted with no obstruction causing reception issues. Alternatively the unit can be fitted with the Tilt & Swivel Quick Disconnect Mounting System. The Humminbird 798c SI Combo is preloaded with base maps and uses Navionics Gold charts to give excellent chart detail and advanced navigation features.

This unit also incorporates dual card readers so a Navionics chart card can be placed in one slot and a blank SD card into the other to record routes, waypoints and screen snapshots. In side imaging mode the depth capability is 150ft and in conventional mode it is 1500ft.

Side imaging sonar gives 180° scanning coverage beneath the boat; in conventional sonar mode the Dualbeam PLUS™ Sonar gives a narrow 20° and wider 60° beam coverage fanning out from beneath the boat scanning an area equal to the depth of water below.

All models in the 700 series have 5” screens and the 798c SI Combo has a new higher resolution 640 x 640 pixel colour display giving a wider, more easily viewable rendition of the seabed. All 2009 700 series models feature three preset buttons so users can switch quickly between preferred screen views such as the split screen option showing a chart map and sonar. As well as being packed with features, popular add-ons include WeatherSense® which monitors barometric pressure trends over the past 12 hours.