Lowrance HDS with SS vs Humminbird SI

[Strewth]

I would was thinking of trying the structure scan feature in a Lowrance HDS-5, but running two cables and having two transducers plus another processor box, seems to be an inelegant design. The Humminbird 798cx SI seems to have the same features for a similar cost, but only uses one cable/transducer and no box.

Am I missing something here? Anyone compared these two units who can comment on the relative merits of the sonar images/ease of use?

[O-3]

The hummingbird doesn't have downscan, sidescan only.

I read somewhere Hummingbird may introduce downscan for existing units though.

[Strewth]

Thanks O-3, but precisely what is the difference between down scan and side scan? The images I have seen so far look very similar.

[O-3]

Here is a pic of Sidescan:

[O-3]

Here is a pic of Downscan:

[O-3]

Strewth:


This vid explains the differences between sidescan and downscan.

[O-3]

After a bit of googling it looks like Humminbird have released a firmware update for Downscan(they call it downimaging) on their units only two days ago.

Tuff choice now I would imagine.

Maybe wait for some more feedback on the update from Humminbird owners and then make your decision.

[Strewth]

Great information there O-3.Tough choice indeed. Do the Humminbird transducers cause much of a rooster tail ? Where is the best place to put them?

[O-3]

I would go a thru Hull ducer mate, no rooster tail then.

[hodges4]

From what I've read so far, side scan/side imaging won't work through hull, it has to be mounted externally where it can clearly see sideways.

[Strewth]

OK, so that still leaves the question of the best place for the transducer. I recall reading a suggestion somewhere that it should be mounted in front of the motor?

[hodges4]

Try this site. You will have to join group first to be able to view photos. There's a heap of photos of installing transducers and other info. The info will be the ame no matter which brand you go for.

http://groups.yahoo.com/group/sideimaging/

John