new 596c hd di

[MEATGETTER]

does any one know when it will be available and what capabilities does it have?? gps, sd ???

[Humminbird_Greg]

You should be able to find the information you want here and even download an operations manual (look under the SUPPORT tab):
596c HD DI :: Humminbird :: Down Imaging :: Marine Fishfinder

No GPS.
No SD card.

2D sonar (area of coverage):
16 degrees at 455kHz (0.28 X water depth)
25 degrees at 200kHz (0.44 X water depth)

DI sonar (area of coverage):
45 degrees at 800kHz (0.83 X water depth)
75 degrees at 455kHz (1.53 X water depth)


Pretty sure that we have been shipping these but do not know when they will be available at your local store off the web sites.

[crappie4me2]

I ordered the 597 CI HD DI from Cabela's and it is scheduled to arrive at their warehouse on 2-11-11. I can't wait until I get it the down imaging looks really good.

[Fish Assassin]

What is kHz and what is its purpose.

So the number such as 75 kHz would be over 30 feet.

Thanks for your help?

[Humminbird_Greg]

kHz or ‘kilohertz’ is a measurement of the frequency of the sonar signal (number of cycles per second). Like you measure the size of a memory card in ‘bytes’, where 1,000 bytes is written as 1KB. Sound pressure is measured in ‘hertz’ (Hz), so kHz is 1,000 hertz (or 1,000 cycles per second). The higher or more hertz there are, the higher the frequency. The lower the hertz, the lower the frequency. Generally speaking; the higher the frequency the more detailed the sonar image, but the lower the range (distance) it will work to.

Not sure what you are meaning by this: “So the number such as 75 kHz would be over 30 feet”.

[Fish Assassin]

I was talking about "area of coverage.""

[Humminbird_Greg]

I’m still not understanding your Fish Assassin.
If you want to know the approximate area that is being covered by each of the sonar beams; you take the water depth you are in and multiply it by the number in the parenthesis.

Example 1: In 13 feet of water the beams cover the following areas of the bottom:
2D sonar
16 degree 455kHz – 3.64 foot diameter area
25 degree 200kHz – 5.72 foot diameter area

DI sonar (remember that this is the width left-to-right and that these are very narrow front-to-rear)
45 degree 800kHz – 10.79 foot area (left-to-right)
75 degree 455kHz – 19.89 foot area (left-to-right)


Example 2: In 32 feet of water the beams cover the following areas of the bottom:
2D sonar
16 degree 455kHz – 8.96 foot diameter area
25 degree 200kHz – 14.08 foot diameter area

DI sonar (remember that this is the width left-to-right and that these are very narrow front-to-rear)
45 degree 800kHz – 26.56 foot area (left-to-right)
75 degree 455kHz – 48.96 foot area (left-to-right)

Knowing the approximate area covered by each sonar beam could help you determine where the fish and or structure is physically located and could influence where you fish.