Do you want me to repeat all I wrote?
200 (ithink) is narrow for better bottom reading.
50 is wider & better for reading fish in area.
Both together will not be much dif that 50 on it's own.
On some sounders 50 will be limited in ability to go DEEP & read bottom. So
in deep water using both (dual) might increase bottom echo.
The main dif is your ability to use & read the sounder.
For the few bucks more, I reckon you should maybe get it & learn how to get
the maximum out of it.
BruceM


"wg992000" wrote in message
t...
Good explanation -
Could you explain why if I have a 240 Blue 200/50/dual, why I would use it
on anything but dual - if this apparently gives the best of both worlds -
or
is there an advantage to one of the specific freq. thanks

"BruceM" wrote in message
...
Depends exactly what you use your sounder for.
The narrower the cone the more detail you'll read of the bottom. If you
are
looking for "holes" to place cray pots etc then you need a narrow beam.
On
the other hand to look for fish maybe a wide beam will give you more
info
of
what is "around" the boat & not just under it. Some of the wide ones
will
even let you know if the fish is on the right or left side.
Therefore if you want both then get a "dual" beam one for sure.
Imagine a flat bottom with a 100 ft deep hole in the middle of it that
is
10
ft across. If a "ping" from your sounder won't fit "inside" the hole
then
you won't see it at all. The echo will return from the edge of the hole.
Now
if you have (say) a one degree cone & it fits inside, then you'll see
it.
A
bit clearer?
BruceM


"LD" wrote in message
news
Can anyone tell me how beneficial a "dual beam 24/60 would be vs. a
single
24deg?
Also, any opinion on the Hummingbird Matrix 17/20/25 finders?
Thanks,
LD
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