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Wristwatch fish finder

By

June 4, 2004

As the most significant recreational fishing innovation in recent times, sonar fishfinder units are well established as a fundamental piece of equipment for boat-based anglers and, like almost everything electronic, decreasing size and increasing capabilities are expanding these applications by bringing the benefits of sonar technology to land-based fishing. One of the latest examples - the Humminbird Smartcast RF30 - utilises a wireless link between a small sonar transducer attached to the fishing line and a wrist-worn display unit to provide a picture of what's underneath - identifying fish within a 25 metre radius a well as a map of the bottom and any submerged structures that could cause snags.

The 22mm x 23mm display incorporates data on Fish ID and depth range plus afish alarm and can be used in conjunction with any rod and reel. The unitoperates to a depth of 30 metres and has a 90 degree sonar beam coverage, with real-time data transfer making it possible to "scope" a location byderiving an underwater map with a few quick casts.

Easy access to this type of data means that applications for the SmartcastRF30 go well beyond fishing. The unit can be used to check mooring depths, creek & river crossings while four-wheel driving, or to inspect dams forsilting and depth.

The floating Remote Sonar Sensor is fully waterproof and can be expected tolast 400 hours of in-the-water usage according to Humminbird.

Power is froma single cell replaceable battery that lasts 25 hours and a "wet switch"that automatically shuts down the Sensor when out of the water isincorporated to minimise power consumption.

A 'B' Remote Sonar Sensor that uses a different channel can also bepurchased so that two people can fish with individual SmartCast's in thesame area without signal interference.

The RF30 retails for AUD$215. See the Humminbird website www.humminbird.com.au or call 07 3890 1115 to learn more.

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About the Author
Mike Hanlon Mike grew up thinking he would become a mathematician, accidentally started motorcycle racing, got a job writing road tests for a motorcycle magazine while at university, and became a writer. As a travelling photojournalist during his early career, his work was published in a dozen languages across 20+ countries. He went on to edit or manage over 50 print publications, with target audiences ranging from pensioners to plumbers, many different sports, many car and motorcycle magazines, with many more in the fields of communication - narrow subject magazines on topics such as advertising, marketing, visual communications, design, presentation and direct marketing. Then came the internet and Mike managed internet projects for Australia's largest multimedia company, Telstra.com.au (Australia's largest Telco), Seek.com.au (Australia's largest employment site), top100.com.au, hitwise.com, and a dozen other internet start-ups before founding Gizmag in 2002. Now he writes and thinks. All articles by Mike Hanlon
1 Comment

\"Power is froma single cell replaceable battery that lasts 25 hours and a \"wet switch\"that automatically shuts down the Sensor when out of the water \" Not quite. While the battery in the \"wristwatch\" is replaceable, the Remote Sensor\'s battery is sealed. Once the battery dies, the entire unit must be replaced.

Robert Guimont
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