Humminbird Side Imaging Forums
Side Imaging Forums => Helix Series Units => Topic started by: proskeeterman@comcast.net on April 27, 2020, 04:18:30 PM
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Looking to understand, what exactly does HW stand for in,
Helix 12 HW Chirp Mega Si?I can't find an answer. Thanks
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High Wide Dual Spectrum CHIRP sonar
Mike
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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
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Yea, what he said. Rickie,your THE best. This website is truly blessed to have you.
Thanks,
Mike
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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
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Funny you mention him. I was thinking about him today. Would ask about the Solix or Helix.
Mike