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Hi David,
David wrote.> I can see the
bottom of the above ground pool very well and when turned from side to side
shows this narrowing of the channel forward of the unit on the >side
with the side of pool closer to this transmit head.
David if you use chlorine in your swimming pool you won't
need a forward scanning sonar to see the bottom.
Alan
----- Original Message -----
Sent: Friday, March 19, 2010 3:13
AM
Subject: [PSUBS-MAILIST] The jury is in
and delivered its verict
To all (and Alec),
The forward
scanning sonar is repaired and wow! I must have one of these things! This
gives you the ability to split screen the display to give a picture view of
both the bottom contour and a forward scan of what's ahead!
When not in the split screen mode it shows the depth in large black lettering
on the upper right of the display.
I can see the bottom of the
above ground pool very well and when turned from side to side shows
this narrowing of the channel forward of the unit on the side with the
side of pool closer to this transmit head.
The sensitivity can
be adjusted which would be great in weed thick areas to diminish this soft
return item.
Selecting greater depths is but a push of a
button away. The selections are in easy to read menu selections. (for people
who are challenged like me)
It is very accurate and uses a lcd
display with the forward scan being updated from left to right with the speed
controlled by the depth selection. The deeper of course the slower this scan
rate.
Now to the meat of our
problem...
Each wire (of which there are nine) is wrapped in a
fine aluminum foil. As signals spike there way down the individual wires, any
extra emf produced by the wire that sends it is transferred to this foil. One
of the nine wires has no insulation on it and as these foil runs are
physically touching, this extra signal is channeled to this bare wire and in
this way does not go to the other wires within this cable.
To
repair this unit, I simply removed the thru hull provided and connected this
original transducer cable with itself using nine in-line crimps (no
shielding). The thru hull first installed had three feet of wire that although
containing individual wires was not shielded from cross talk. This is what
clouded his display and allowed for only bottom depth
indications.
How does he install this wire (we
already know we can cut this cable to insert it perhaps as an intact cable)
thru the side of a submarine and ensure it is sealed against leaks under water
pressure? Is there a thru hull that can handle nine wires and keep them from
transferring emf one wire to another?
I MUST
have such a unit! Lets get some idea's on this one as this thing is nothing
short of
awesome!
David Bartsch
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