Material Advances Material Advances

Nickel transducer - 1959 Split beam transducer -2001 Split beam transducer -1984 Split beam transducer, Composite Technology - 2002 Multi element transducer -1970 The first Transistor based Echosounder Simrad has always strived to providethe very best electronic tools for all types and size of vessel. In 1962,Simrad introduced the first ever transistor based Echosounder. The EC series had a powerful 20Wtransmitter and ran on a 24v DC supply, making it ideal for use bysmaller vessels. It proved popular and was mimicked by companies from all over the world. Nickel transducer - 1962 Recordings The first Echosounders used wet paper to depict the results of an echoand gave only a 2 step black and white picture. The advance to dry papergave bettert definition with 12 step grey scale recording. The natural progression of this was the Skippersounder, which had dry paper with full colour readouts and 32 step recording. But it wasnt until 1978 and the microprocessor driven EK400 that Echo information could be viewed on a screen (CTR). New developments in designhave made Simrad transducers more effective and needing less power output per channel.These instruments are highlysensitive at any depth and capable of detecting single fish below 1000 meters.