MEGA Imaging is HERE!

[StrikeBack]

Being bright is not hard, having details is what it is all about

[TroyBoy30]

yea detail is great unless the return is so dark you can't see any of it

[Fishton]

yea detail is great unless the return is so dark you can't see any of it

+1

LOL

[rnvinc]

Being bright is not hard, having details is what it is all about

Range vs detail is relevant compromise in all Sonar technologies ...

Which is why the brands offer both lower frequency Sonar and Higher frequency Sonar (in most units) ...

CHIRP helps both ... but the range vs detail compromise is still relevant ...

There's just no way around the fact (yet) that higher frequency sound wave attenuates in water faster than lower frequency sound wave ...

Rickie

[StrikeBack]

Range vs detail is relevant compromise in all Sonar technologies ...

Which is why the brands offer both lower frequency Sonar and Higher frequency Sonar (in most units) ...

CHIRP helps both ... but the compromise is still relevant ...

Rickie

Yes Rickie, exactly. Lower frequencies goes further with less detail and higher frequencies are more detailed by less range. Even Garmin cannot defy the Laws of Physics.

[fisher12]

Range vs detail is relevant compromise in all Sonar technologies ...

Which is why the brands offer both lower frequency Sonar and Higher frequency Sonar (in most units) ...

CHIRP helps both ... but the range vs detail compromise is still relevant ...

There's just no way around the fact (yet) that higher frequency sound wave attenuates in water faster than lower frequency sound wave ...

Rickie

Yes,but in a lot of those mega shots,that being shown are fixed high frequency, not chirp.

[rnvinc]

My point being that we (recreational sonar price point) are not even close in technological advancement to where we (users) can have the "Range [600ft side to side] of Sidevu" (Garmin) ... with the "Detail [125ft side to side] of Mega Imaging" (Humminbird) all in the same image...

Rickie

[MichAngler]

The New MEGA Imaging uses new hardware including the NEW MEGA Imaging Transducer with Dedicated Down Imaging Element. It has a Full Metal Bracket and is Totally NEW. (Images to come)

Doug,

Do you know if this transducer was designed to be mounted like a traditional transducer at the bottom of the transom?

[fisher12]

My point being that we (recreational sonar price point) are not even close in technological advancement to where we (users) can have the "Range [600ft side to side] of Sidevu" (Garmin) ... with the "Detail [125ft side to side] of Mega Imaging" (Humminbird) all in the same image...

Rickie

Ok,but help me out please.I'm I correct in saying that sweeping multiple frequencies has nothing to do with garmin range,out to 600ft nor does it help the detail that the humminbird is getting out to the 125ft range..?(DSP) or chirp,making the difference ,in these ,low cost recreational units?or is it something else? (I no I'm being annoying,but just trying to learn)....I would think ,transducer quality /and how well it's tuned to the unit plays a big role

[Bob B]

I think this whole 400 vs 600 range is much ado about nothing ...... How often do you run your current units to their full range? There isn't going to be any detail at 600' on a 10-12 in screen no matter how high the frequency is.....If that Mega runs 250' each side, that would be great....but it will be VERY seldom it will be used at that range setting.

I do sometimes run my current units full range to see the general lay of things .... but that is typically what mapping is for.

[rnvinc]

Ok,but help me out please.I'm I correct in saying that sweeping multiple frequencies has nothing to do with garmin range,out to 600ft nor does it help the detail that the humminbird is getting out to the 125ft range..?(DSP) or chirp,making the difference ,in these ,low cost recreational units?or is it something else? (I no I'm being annoying,but just trying to learn)....I would think ,transducer quality /and how well it's tuned to the unit plays a big role

Continuous wave Sonar (fixed frequency of any kHz) has compromise limitations ... the only way to collect more echo data is to increase the gain ... which, in effect collects more echo data ... and more noise ...

Sweep frequency Sonar (CHIRP) is not bound by the same scientific properties ... so there can be more effective power put into the water (to collect good data) ... without collecting more bad data (noise) ...

455kHz fixed vs 1200kHz fixed is bound by sonar physics that higher frequency attenuates in water faster than lower frequency ...

CHIRPING adds range effectiveness to each frequency choice (relative) by being able to get more power into the water without the detriment of also getting more noise collected ...

The Mega Imaging marketing diagram of 400ft for 455kHz and 125ft for Mega 1200kHz would indicate both of those being CHIRP ...

We don't see (that I've found) the marketing diagram (or specs) for those same frequencies set as fixed frequency ...

My unoffical guess at fixed frequency, we would see effective 455kHz range at about 240 (similar to previous 455kHz) ... and we would see 1200kHz fixed frequency at about 60-90ft ...

Note: Environmental conditions such as bottom density and water particulate play into range effectiveness also ...

And also Note: Advancements in new processing of these new units should, in itself, allow some better imaging even at fixed 455kHz and 800kHz over what we are accustomed to seeing ...

Rickie

[TroyBoy30]

600 foot doesn't help us bass fisherman much. at that range youre not going to see the small targets like brush piles that we look for. it will help you cover a ton of structure though which will also help you find places that may hold fish. It's a huge benefit in the salt water world though. those guys are scanning for huge wrecks that can absolutley be seen when scanning 600 ft to a side.

[Doug Vahrenberg]

Doug,

Do you know if this transducer was designed to be mounted like a traditional transducer at the bottom of the transom?

MEGA Imaging Transducer closely resembles the ONIX SI Transducer. I'm asking for images to post of it. It's an All-In-One Transducer and can be mounted to do it all but like most bass boat users we opt for mounting higher to protect it and ease of install. But it can be mounted low but the risks from damage increase.

[Doug Vahrenberg]

MEGA Imaging: Down Imaging Images:

[fisher12]

BROADBAND CHIRP (1KW / BUILT-IN)

Humminbird Broadband CHIRP delivers impressive detail and accuracy in virtually any freshwater application. Compared to peer technologies, this best-in-class CHIRP sweeps more frequencies, while using superior transducer and data processing to deliver unrivaled fish-finding precision. For maximum convenience, this 1kW technology is built into your Humminbird HELIX 12 head unit.

1kW / Built-in
Range of 28kHz-490kHz on the HELIX 12 DI to a range of 28kHz-250kHz on the Helix 12 SI and GPS. Depths down to 3,500 ft .......humminbird website says (1kw)chirp built in .does this mean that a 2kw would have the ability to scan farther out,with higher detail?

[PearlMistZ521C]

I guess Doug is avoiding the question if there is gonna be a Gen2 update for Onixs...

[SonarNinja]

The length of the element used inside the transducer also dictates the resolution of the image shown on screen.

Longer elements make the front-to-back scanned area smaller which increases resolution shown on the display. This is one of the reasons why the Lowrance transducer is so long. A very high frequency element (say 1,200kHz) that is short is going to have comparable resolution to a lower frequency transducer (say 800kHz) that uses longer elements. But they don't give up the range of using a higher frequency. Same reason why scientific side scan sonars are several feet long.

[StrikeBack]

I think this whole 400 vs 600 range is much ado about nothing ...... How often do you run your current units to their full range? There isn't going to be any detail at 600' on a 10-12 in screen no matter how high the frequency is.....If that Mega runs 250' each side, that would be great....but it will be VERY seldom it will be used at that range setting.

I do sometimes run my current units full range to see the general lay of things .... but that is typically what mapping is for.

Spot on Bob. Not many of us go wreck hunting.

[Bob B]

Spot on Bob. Not many of us go wreck hunting.

I'm with you John ..... give us 1800 Khz at 65-90' range.

[Doug Vahrenberg]

I guess Doug is avoiding the question if there is gonna be a Gen2 update for Onixs...

Doug doesn't know and only shares the factual data he can.