Weak Sonar Image - California Bass Fishing Forum
» Site Navigation
» Home
 > Search
 > FAQ
» Forum Search
» Insurance
LinkBack Thread Tools
Old 01-18-2013, 01:55 PM   #1 (permalink)
Junior Member
Join Date: Nov 2011
Posts: 12
Default Weak Sonar Image

I had the console mounted LMS480 switched out for a HDS-8 Gen 1. Both use blue connectors so I assume they used the same puck which was epoxied to the bottom of the bilge. The signal on the LMS480 was solid, but the signal on the HDS-8 is weak often losing the depth below 25 ft. When on auto range, the HDS-8 goes to 40% sensitivity. When I set the sensitivity to 90%, the screen shows lots of noise.
Any ideas?

I ordered a new puck and may try a new position on the bottom hull when it gets warm enough to use epoxy.


Vernon Nodohara
vernonn is offline   Reply With Quote Quick reply to this message
Sponsored Links
Old 01-20-2013, 11:48 AM   #2 (permalink)
Senior Member
Join Date: Nov 2008
Posts: 203
Default Re: Weak Sonar Image

Auto sensitivity will adjust as depth and conditions change. If you want to adjust the sensitivity yourself be sure to disable the auto sensitivity. To do this hit menu twice, go to sonar and hit enter, go down to auto sensitivity and hit enter. Then go up to Adjust and make your manual adjustments to the sensitivity. If you adjust the sensitivity up while the auto sensitivity is checked, then you are adding more sensitivity to the auto adjustments the unit is making. This is way too much and the screen will be almost completely blocked out.

As for the signal image itself there are a couple things you need to do with the HDS units concerning the transducer and fishing mode settings. First while in a sonar screen hit menu twice, go to sonar and hit enter. Go down to Fishing Mode and hit enter. Choose Shallow Water if you do most of your fishing in less than 100 feet and hit enter. Now go down to the bottom of this screen where it says Installation and hit enter. Go to the bottom of the next screen to Transducer Type. It will say "Unknown". Go down to this box and hit enter. The list of available transducers will come up. Look on the cable of your transducer where it plugs into the unit and find the chrome tag. On this tag will be the model number of your transducer. Find that number on the list, highlight it and hit enter. This will replace Unknown with the model number of your transducer, hit enter. Be sure to Save your changes.

This will help the unit find the bottom and keep the lock as you fish. It could be that the HDS unit simply has more power and the old ducer just won't display the image the HDS unit is trying to show. The new transducer is the next step to fix this issue.
Ken Sauret
Ken Sauret is offline   Reply With Quote Quick reply to this message
Old 01-22-2013, 12:36 PM   #3 (permalink)
Junior Member
Join Date: Nov 2011
Posts: 12
Default Re: Weak Sonar Image

Thanks Ken!!
vernonn is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the California Bass Fishing Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Interesting Image??? What's happening on the Right Side???? DougV Image Interpretation 4 09-12-2011 11:29 PM
Humminbird 2D Image Interpretation DougV Image Interpretation 1 03-24-2011 11:02 AM
Humminbird 2D Image Interpretation DougV Image Interpretation 6 02-28-2011 02:21 PM
Structure Image 101 DougV Image Interpretation 6 02-10-2011 02:14 PM
Image Interpretation Sub-Forum DougV Humminbird Info & Support Forum 0 02-05-2011 01:36 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -4. The time now is 11:32 AM.

Powered by vBulletin® Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL3
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.