Marine Electronics Forum - LSS-1 transom installation question

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03-23-2012, 07:40 AM
Can anyone tell me if this installation is OK. The transducer on the left is the Airmar P66 and the one on the right is the LSS-1. Should the LSS-1 be the lower transducer?

03-23-2012, 07:48 AM
Yes - I'd swap them - you want the LSS xduer lower so its side view is not blocked by your other transducer.....

03-23-2012, 08:11 AM
That's what I thought. Thanks for the response.

03-23-2012, 01:55 PM
I have mine higher than the bottom of the boat so that it is not exposed when on plane.

If you google lss-1 installation, you should get a lot of pics.

Ocean Mark
03-24-2012, 06:37 PM
Yes - I'd swap them - you want the LSS xduer lower so its side view is not blocked by your other transducer.....

Can anyone tell me what the Beam/cone angle actually is on a LSS-1 transducer, i have read many times that in downscan mode the cone width is much greater than the P66 in 50khz but i cant find direct figures for the beam angles for downscan and sidescan respectively, the quote above seems to suggest the beam angle on sidescan shoots out almost 100% horizontal at its upper level in the water column

03-24-2012, 06:48 PM
Some info on "cone" width in this old post - some good info from Fishton and Jay Dee

Ocean Mark
03-24-2012, 09:04 PM
Thanks Mwardncsu, the post was a good read however I'm still looking for more specific beam angle figures so i can determine if the through hull LSS will receive interference from the port side of my hull.

Ocean Mark
03-25-2012, 12:59 AM
Just in case anyone can help my hull is 19 deg at the stern and the only place i can go through the hull is in a putty box about 7-8 inches from the keel on the Starboard side, the Port side putty box has through the hull fittings located there so i cant use two transducers and link them up as the instructions show for steep deadrise hulls.

If there was specifications on the beam angle from the transducer it would be and easy calculation to work out if the sidescan on the port side will be obscured by the hull or not with my vessel.

I did not think 19 deg at the stern constituted a steep deadrise hull but several users have suggested mounting the LSS transducer below the other when transom mounting because the sidescan to the port side could be partially obscured by the other transducer.

Any help would be appreciated

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