Recent Posts

1

DIY - Side Scan Sonar and towfish / Re: towed or not

« Last post by tournevase on January 07, 2026, 04:53:13 AM »

thanks rickard

2

DIY - Side Scan Sonar and towfish / Re: towed or not

« Last post by Rickard on January 06, 2026, 04:47:48 PM »

Hi, I have used a towfish and hull mounted transducers alot. It's possible to use a towfish close the surface, but it's so much simpler with hull mounted gear. I use hull mounted in waters much deeper than 4,5 m, down to about 20m with good results (in calm weather conditions).
Regards,
Rickard

3

DIY - Side Scan Sonar and towfish / towed or not

« Last post by tournevase on December 18, 2025, 04:51:12 AM »

hi everybody

i implement side imaging in rivers for archeological survey purposes.
the max depth is 4,5 m 
the side range reach 2 x 50 m
today the transducer is attached to the boat under 25 cm of water
i wonder if it should be smart to use a towfish and at what depth
a problem should be when sailing near the bank line where it is too shallow

4

DIY - Side Scan Sonar and towfish / AGC for side imaging

« Last post by tournevase on December 18, 2025, 04:31:10 AM »

hi everybody

rickie suggested me to post this here
does somebody know if it is possible to apply a variable gain in the side imaging to lighten the furthest returns ? (for helix of course)
i precise that increasing sensitivity should not be the solution because i think that it "lighten" all the sonogram

5

Helix Series Units / Re: variable gain for side imaging

« Last post by tournevase on December 18, 2025, 04:26:15 AM »

good idea thank's rickie

6

Helix Series Units / Re: variable gain for side imaging

« Last post by rnvinc on December 17, 2025, 07:49:40 PM »

Interesting idea for sure.

You might also Post this question in the towfish sub forum  ...

Some of our most creative members follow that sub forum specifically  ...

http://forums.sideimagingsoft.com/index.php?board=41.0

Rickie

7

Helix Series Units / variable gain for side imaging

« Last post by tournevase on December 16, 2025, 10:30:34 AM »

hi everybody
does somebody know if it is possible to apply a variable gain in the side imaging to lighten the furthest returns ? (for helix of course)
i precise that increasing sensitivity should not be the solution because i think that it "lighten" all the sonogram

8

XPLORE Series Units / Re: Transducer Helix - Xplore

« Last post by rnvinc on October 27, 2025, 04:42:39 PM »

While I have no insider information on the actual piezoes Humminbird uses, in the past Humminbird has always made a different designation for any new transducer released with a different piezo  ...

That being said, I would assume the 2d piezos are the same  ...

Rickie

9

XPLORE Series Units / Re: Transducer Helix - Xplore

« Last post by MarjanK on October 26, 2025, 03:48:43 PM »

OK, I know it only works in 2D, but is the new "XM 14 HW CMSI T" better in 2D mode than the "XM 9 HW MSI T" with an adapter? Is there any difference between them in 2D use… do they contain different piezoelectric elements?
I'm asking whether it makes sense to buy the new EXPLORE with the new transducer 'XM 14 HW CMSI T' if I already have the 'XM 9 HW MSI T' installed on my boat.
Replacing only the head would be much simpler than installing an entirely new transducer system.

10

XPLORE Series Units / Re: Transducer Helix - Xplore

« Last post by rnvinc on October 02, 2025, 10:58:33 PM »

The only adapter for 14pin to 7pin is the AD 1429, but it only works for the 2d channel  ...

Rickie