Sonar Transducers

[j.i.wilson]

All my depth info his shot. Entirely due to poor/crap/broken transducers.

I have a Garmin 720s for which I have a P319 transducer on order. So that will soon be sorted.

However. There is a working transducer spare already fitted through the hull. It terminates in as coax plug. I don't know if it's 150kHz or 200kHz.

So, at last, the questions.

How can I tell frequency of transducer?

Is there a simple numeric display I could source to show just depth? The NASA Clipper range looks right but I know that's 150kHz only.

Any advice welcome - even "don't bother".

Thanks all

[jonp]

I would of thought the Garmin head unit should tell you what transducer is connected, not sure about 150 /200 I would of thought its more likely to be either 83/200 or 50/200. What ever the case the 200khz should be what you should select for the shallow waters you fish over there.