Author Topic: Looking for Definition  (Read 712 times)

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Offline proskeeterman@comcast.net

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Looking for Definition
« on: April 27, 2020, 04:18:30 PM »
Looking to understand, what exactly does HW stand for in,
Helix 12 HW Chirp Mega Si?I can't find an answer. Thanks


Offline newkid4si

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Re: Looking for Definition
« Reply #1 on: April 27, 2020, 11:15:55 PM »


         High Wide Dual Spectrum CHIRP sonar

             Mike

Offline rnvinc

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Re: Looking for Definition
« Reply #2 on: April 28, 2020, 03:37:24 PM »
Just to expound a little on what HW actually means  ...

Previous Sonar technologies were derived around the science of pushing sound waves thru water at fixed frequency sound waves (as in 200kHz for single fixed frequency sonar or 83kHz/200kHz for dual fixed frequency sonar )  ...

New science is now incorporating CHIRP Sonar technology  (Compressed High Intensity Radar Pulse)  ... which is basically a different way to send sound pulses into the water  ...

This sound pulse is comprised of a “sweep” or “sweep spectrum” of several different frequencies transmitted all at once  ...

So instead of sound pulse transmit of 200kHz - the unit transmits a sweep spectrum of 175kHz- 225kHz frequencies all at the same time  ...

This scientific way of sending sound into the water (CHIRP) allows for much more data to be collected and returned to the xducer for rendering into the Sonar image  ... so the user sees more data (compared to fixed frequency) with less added noise (another advantage of the CHIRP technology)  ...

The HW designation stands for “High/Wide” meaning the unit is capable of transmitting a “High CHIRP” sweep frequency (175kHz - 225kHz) and/or a “Wide” CHIRP sweep frequency (75kHz - 93kHz)  ...

Here is more info  ...



Rickie
« Last Edit: April 28, 2020, 03:41:34 PM by rnvinc »

Offline newkid4si

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Re: Looking for Definition
« Reply #3 on: April 28, 2020, 08:00:42 PM »
Yea, what he said.  Rickie,your THE best.  This website is truly blessed to have you.

      Thanks,
      Mike
« Last Edit: April 28, 2020, 08:04:03 PM by newkid4si »

Offline rnvinc

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Re: Looking for Definition
« Reply #4 on: April 29, 2020, 10:14:24 PM »
Yea, what he said.  Rickie,your THE best.  This website is truly blessed to have you.

      Thanks,
      Mike

Thanks Mike  ... we all appreciate the many members that help out in the forum  ...

Sure miss Humminbird Greg tho  ...

Rickie

Offline newkid4si

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Re: Looking for Definition
« Reply #5 on: April 29, 2020, 10:22:51 PM »
Funny you mention him.  I was thinking about him today. Would ask about the Solix or Helix.

           Mike


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