How to choose a Fish Finder
Published at 2011-10-13 00:00:00
CH Smith Marine has been providing the best fishfinders to the Australian market for over 50 years, so we have learnt a thing of two about these wonders of modern fishing. Since our original relationship started with Furuno in 1957, we have continually added only the best quality depth sounders and fishfinders to our range.
The basics of fishfinding technology
Fish finders, also known as echo sounders, depth sounders or sounders (Sonars in the USA) are used to locate underwater objects; preferably Fish. The Sonar technology (an abbreviation for SOund, NAvigation, and Ranging ) was originally developed by the US Navy to identify submarines cruising the ocean, but these days is hailed by commercial and recreational fishermen alike as an angling must-have.
All fishfinders consist of 4 essential parts:
The Transmitter sends an electrical impulse to the Transducer which converts this impulse into a sound wave. The Transducer then emits the sound wave into the water and collects the echo when it rebounds off solid underwater objects, such as Fish. The Transducer then converts this ricocheted wave signal back into an electrical signal and forwards the response to the Receiver. The Receiver then amplifies and modifies the signal to display size, composition and shape on the screen as a representation of the underwater scene. The detail and Resolution of the display depends on the frequency(s) and power of the pulse transmitted and environmental factors in the water such as temperature, muddy/cloudy/aerated water etc.
Selecting a Fish Finder
To select the right Fishfinder based on your individual needs, think about these simple factors:
Once you have these variables clear in your head, there are 5 aspects of a Fishfinder that will help you clarify the best unit for your fishing adventures:
Mounting the Transducer provides yet more options, each with its pros and cons. Transom mounts are generally easier and cheaper to install and work well for Tinies and trailerable fibreglass boats, but work best in calmer waters and are not efficient when travelling at much more than 10 knots. Through Hull Transducers are the best for clarity and performance, but cost more and are harder to install. If you need high speed bottom scanning – these units are worth their cost.
More recently options such as the new broadband CHIRP Transducers using alternating or spectrum frequencies; the R209LH and B265LH from Airmar, the forward-facing Interphase depth sounders or the best in Lowrance Transducers, provide yet more functionality and Resolution - and are leading the future of fishfinders.
For more information, we are the experts in marine electronics, depth sounders and Fish finder/chartplotter combos, so give us a call on +61 (03) 9417 1077 or drop by the Collingwood store to test out some of the functions available and compare the units.
|1 Item(s)||Show per page|
Michael on 31/08/2014 at 23:21:28
|1 Item(s)||Show per page|