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Default Tranducers -- Dual frequency vs dual beam?

What's the difference between dual frequency and dual beam tranducers?
I did a google on it; and just got a link to garmin "what's the difference"..
but it didn't talk about the difference.

Other links went to products (like the garmin 498) but didn't explain the
difference.

Or, is it two terms for the same thing?

Thanks
-j


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Default Tranducers -- Dual frequency vs dual beam?

Josh Assing wrote:
What's the difference between dual frequency and dual beam tranducers?
I did a google on it; and just got a link to garmin "what's the difference"..
but it didn't talk about the difference.

Other links went to products (like the garmin 498) but didn't explain the
difference.

Or, is it two terms for the same thing?


Ok, here it is in a small package.

Dual beam transducers transmit two widths - usually 18 to 22 degrees and
43 to 47 degrees. Each beam has two elements - a transmit element and a
recieve element.

The dual beam system is designed for shallow water (wide) and deep water
(narrow).

Dual beam transducers have to be selectable and they don't work on all
depth finders.

Dual frequency transducers transmit 50 Khz and 200 Khz for exactly the
same reasons.

So, that's the difference.
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Default Tranducers -- Dual frequency vs dual beam?

What's the difference between dual frequency and dual beam tranducers?
I did a google on it; and just got a link to garmin "what's the difference"..
but it didn't talk about the difference.

Dual beam transducers transmit two widths - usually 18 to 22 degrees and
43 to 47 degrees. Each beam has two elements - a transmit element and a
recieve element.

The dual beam system is designed for shallow water (wide) and deep water
(narrow).

Dual beam transducers have to be selectable and they don't work on all
depth finders.

Dual frequency transducers transmit 50 Khz and 200 Khz for exactly the
same reasons.

So, that's the difference.


So there the same, but different.
or are they different, but the same?

Thanks
-josh


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Default Tranducers -- Dual frequency vs dual beam?

Josh Assing wrote:
What's the difference between dual frequency and dual beam tranducers?
I did a google on it; and just got a link to garmin "what's the difference"..
but it didn't talk about the difference.

Dual beam transducers transmit two widths - usually 18 to 22 degrees and
43 to 47 degrees. Each beam has two elements - a transmit element and a
recieve element.

The dual beam system is designed for shallow water (wide) and deep water
(narrow).

Dual beam transducers have to be selectable and they don't work on all
depth finders.

Dual frequency transducers transmit 50 Khz and 200 Khz for exactly the
same reasons.

So, that's the difference.


So there the same, but different.
or are they different, but the same?


Don't confuse frequency with beam width.
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Default Tranducers -- Dual frequency vs dual beam?

Don't confuse frequency with beam width.

I think that's what I was doing...
I got this from garmin:

Quote:
Dual beam is only reference to the beam that the transducer shoots to
the bottom of the waterway. The units enable a transducer to shoot two
beams at once at two frequencies. The transducer is not enabled with the
dual beam settings. The units enable the transducer to use this feature,
and only certain units enable this. Transducers run on the frequency
settings, which differ, depending on useage. The frequency is the sine
wave, and the cone is the angle that the frequency shoots at.
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