Using old depth transducer

[biscuit]

My GRP long keel boat has an "in hull" transducer, which is unreliable, probably due to its unsatisfactory position and hull thickness. There is a "disused" through hull transducer fitted in "position A", ie just forward of the keel. I have been reluctant to remove it until deciding on a replacement system. I was surprised to find it still operates , with an audible & palpable clicking when connected (3 wires: black/ white/ ground),but it gives a meaningless output on my NASA display. Transducer is Radarsonics Inc (USA) and may be the one with a 120khz output with 38 degrees beam. I have contacted them, without reply. Before I bash it out and discard it, I thought it worth asking: Any idea what the original system was, and, is it possible to match this transducer with any availble displays?

 

[aluijten]

You might be able to connect it to a Echopilot Bronze system. This instrument allows you to adjust to the frequency of the connected transducer. I'm not sure if the range is wide enough for this transducer.

Actually I have one for sale (Speed and depth). PM me if you are interested.

Arno

 

[Eygthene]

My Echopilot Bronze+ manual says "The depth frequency can be set from 100kHz to 250kHz. This setting alters the sound pulse transmission frequency and allows other frequency transducers to be used with the unit." I use my Echopilot Bonze+ instrument with an old Navico depth transducer and it works well.

 

[biscuit]

Thanks guys, that is really very helpful. As a result I have sourced a second hand Echopilot on the "Boats and Outboards" website at a low enough price to give it a go. If that doesnt work, aluijten I will contact you.