Humminbird Side Imaging Forums

General => General Discussion => Topic started by: calli1 on April 24, 2010, 01:58:54 PM

Title: 455 kHz or 800 kHz...what is the difference?
Post by: calli1 on April 24, 2010, 01:58:54 PM

Can anyone tell me on the Side Image Units what is the difference in the 455kHz and the 800 kHz ?

Title: Re: 455 kHz or 800 kHz...what is the difference?
Post by: keizerh on April 24, 2010, 02:36:55 PM

455 greater distance
800 kHz better quality of picture

hendrik

Title: Re: 455 kHz or 800 kHz...what is the difference?
Post by: sonar2000 on April 24, 2010, 06:10:33 PM

455 has a beam 86 degrees wide.  this covers the top to the bottom.    the 800 has a beam of 55 degrees wide and covers more of bottom and less of the top.  As hendrik said.  a clearer picture. 

You can check the Humminbird sonar tutorial  at
 www.humminbird.com (http://www.humminbird.com)

also refer to this forum. 

http://forums.sideimagingsoft.com/index.php?board=8.0 (http://forums.sideimagingsoft.com/index.php?board=8.0)

you can also search this forum using the tab at the top right

Chuck

Title: Re: 455 kHz or 800 kHz...what is the difference?
Post by: reddog on April 26, 2010, 09:48:08 AM

Is anyone successfully using the 800 khz for SI imaging?

Mine works great in 455, but when I switch to 800, its gets way too dark to read anything.

Ive tried adjusting the sens, but that doesnt help much.

Title: Re: 455 kHz or 800 kHz...what is the difference?
Post by: sonar2000 on April 26, 2010, 09:53:42 AM

Try the contrast and the brightness setting on the sonar menu.   Chuck