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Old 17-03-2018, 02:13   #1
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Running depth transducer at different frequency anyone do this?

Replacing Garmin 160C dual beam 200/80 with Garmin Striker 4.
Keeping my existing transducer.

Options in new software are either 200/83 or 200/70?

I don't recall second number but recall it was lower.

Garmin doesn't seem to have an option for 200/80 and all they say is running a transducer at a different frequency may damage it or give reduced performance.

Anyone run into this problem?

Should I go high or low?

Also, this new Striker doesn't have a sun cover. Can it sit out in full sun? I only get full sun on the display early morning or late evening if the vessel is turned the right way.

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Old 17-03-2018, 03:47   #2
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Re: Running depth transducer at different frequency anyone do this?

Likely the transducer is optimized for it's original unit. Just how well it will work should be an interesting experiment. It might be just fine. Damage? Not likely unless the new unit is more powerful.

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Old 17-03-2018, 04:07   #3
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Re: Running depth transducer at different frequency anyone do this?

Transducers for recreational and light commercial boats usually operate on frequencies between about 25 and 400 KHz, with 50 and 200 KHz being the two most common.
As with most radio or radar transmissions, lower frequencies generally have greater penetrating power while higher frequencies offer higher resolution or detail.
A low frequency around 50 KHz is excellent for displaying a wide area of the bottom, especially if the water is deep, while a higher frequency shows more bottom detail in shallow water, a very useful trait for fishfinders and recorders.
A depth sounder signal that reads up to 400’ in fresh water may lose as much as half of its penetrating power in saltwater, so lower frequencies may be favoured for saltwater use.
Gord May
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Old 12-04-2018, 21:38   #4
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Re: Running depth transducer at different frequency anyone do this?

The Stryker will do 50/77/200 but the 160C would only do 77/200. Your transducer is likely 77/200. I would set it to 80/200 or whatever option is closest to 77/200.

The sun will kill it in the long run. Spend $15 on the sun cover or bring it in when your not using it.
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depth, enc

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