Humminbird Side Imaging Forums

Side Imaging Forums => 997c SI, 998c SI & 999ci HD SI => Topic started by: ksc on March 10, 2012, 06:38:02 AM

Title: 2 transducers for better images ?
Post by: ksc on March 10, 2012, 06:38:02 AM

Hi everyone

It s told me that if i use 2 pisces of XHS 9 HDSI 180 T, my 998 csi gives me better images! anyone knows if it is true? if it s true, how long range should i left among these 2 transducers?

Thanks alot

Title: Re: 2 transducers for better images ?
Post by: Rickard on March 10, 2012, 09:26:41 AM

Hi ksc!
That's true you can get better horizontal resolution with a longer array. I and SeaRover have constructed such arrays by joining two SI transducers. SeaRover has built entirely new arrays by picking out the elements from two transducers and mounting them in new housings. You can't just line up two transducers because the elements are not allowed to be farther apart than 1/4 of a wavelength. This is about 1 mm at 455 kHz. The transducer housings must be modified by cutting/grinding away material so the SI elements can be positioned no more than a mm apart. The details in these projects are discussed here: http://forums.sideimagingsoft.com/index.php?topic=363.0 (http://forums.sideimagingsoft.com/index.php?topic=363.0)
Kind regards,
Rickard

Title: Re: 2 transducers for better images ?
Post by: Rüdiger on March 11, 2012, 08:52:11 AM

Hi ksc :D

Do you mean two transducer, one each right and left?
This constellation is expected to bring a better result, thus will make sense if there are no other suitable mounting option.

mvh
Rüdiger

Title: Re: 2 transducers for better images ?
Post by: ksc on March 21, 2012, 06:50:53 AM

Thank you so much for your help. This answers made me happy..