Shallow Water Depth Finders
 

On Mon, 18 Aug 2008 10:34:34 -0400, DownTime
wrote:

- Can you put two different transducers, from two different
manufacturers on the same stern and each will function accordingly? I
guess I am wondering of Garmin's transducer and branx X's(assuming I go
that route) might interfere with each other.

Well, no - not on a small boat. The two signals will interfere with
each other. Even at twenty feet or so, they will interfere - I have a
transducer mounted on my trolling motor which is 21 feet away from the
stern and they still interfere with each other.

Has to do with the angle of the beam.

With respect to shallow water performance, that's natural. Get within
five feet of the bottom and the signal return will be overpowering and
produce nothing but hash. Plus, if the bottom is muddy, you can get
false returns to hard bottom. I've turned down the sensitivity on my
Raymarine DS600 to zero and still can't get a reliable reading under 5
feet.

Shallow water fishing is mostly sight fishing anyway. Even in deeper
water, depending on the species, it's mostly sight fishing.

The best way to handle this situation is to set the offset for your
draft - at least that will tell you what you are getting into shallow
waters.

Shallow Water Depth Finders
 

Short Wave Sportfishing wrote:
On Mon, 18 Aug 2008 10:34:34 -0400, DownTime
wrote:

- Can you put two different transducers, from two different
manufacturers on the same stern and each will function accordingly? I
guess I am wondering of Garmin's transducer and branx X's(assuming I go
that route) might interfere with each other.

Well, no - not on a small boat. The two signals will interfere with
each other. Even at twenty feet or so, they will interfere - I have a
transducer mounted on my trolling motor which is 21 feet away from the
stern and they still interfere with each other.

Has to do with the angle of the beam.

With respect to shallow water performance, that's natural. Get within
five feet of the bottom and the signal return will be overpowering and
produce nothing but hash. Plus, if the bottom is muddy, you can get
false returns to hard bottom. I've turned down the sensitivity on my
Raymarine DS600 to zero and still can't get a reliable reading under 5
feet.

Shallow water fishing is mostly sight fishing anyway. Even in deeper
water, depending on the species, it's mostly sight fishing.

The best way to handle this situation is to set the offset for your
draft - at least that will tell you what you are getting into shallow
waters.


On my previous Parker, I had a Furuno fishfinder in the cabin and a
Lowrance fishfinder mounted in the cockpit. They were wired to different
transducers on opposite sides of the transom. The transducers were
different frequencies. Both units worked just fine, even when both were
operating at the same time.

Thus, the answer to the question of two transducers is - maybe.


--
I am only one, but I am one. I cannot do everything, but I can do
something. And because I cannot do everything, I will not refuse to do
the something that I can do. What I can do, I should do. And what I
should do, by the grace of God, I will do.

— Edward Everett Hale (1822-1909)

Shallow Water Depth Finders
 

On Mon, 18 Aug 2008 14:53:28 -0400, hk wrote:

Short Wave Sportfishing wrote:
On Mon, 18 Aug 2008 10:34:34 -0400, DownTime
wrote:

- Can you put two different transducers, from two different
manufacturers on the same stern and each will function accordingly? I
guess I am wondering of Garmin's transducer and branx X's(assuming I go
that route) might interfere with each other.

Well, no - not on a small boat. The two signals will interfere with
each other. Even at twenty feet or so, they will interfere - I have a
transducer mounted on my trolling motor which is 21 feet away from the
stern and they still interfere with each other.

Has to do with the angle of the beam.

With respect to shallow water performance, that's natural. Get within
five feet of the bottom and the signal return will be overpowering and
produce nothing but hash. Plus, if the bottom is muddy, you can get
false returns to hard bottom. I've turned down the sensitivity on my
Raymarine DS600 to zero and still can't get a reliable reading under 5
feet.

Shallow water fishing is mostly sight fishing anyway. Even in deeper
water, depending on the species, it's mostly sight fishing.

The best way to handle this situation is to set the offset for your
draft - at least that will tell you what you are getting into shallow
waters.


On my previous Parker, I had a Furuno fishfinder in the cabin and a
Lowrance fishfinder mounted in the cockpit. They were wired to different
transducers on opposite sides of the transom. The transducers were
different frequencies. Both units worked just fine, even when both were
operating at the same time.

Thus, the answer to the question of two transducers is - maybe.

Um...what frequencies?

Shallow Water Depth Finders
 

Short Wave Sportfishing wrote:
On Mon, 18 Aug 2008 14:53:28 -0400, hk wrote:

Short Wave Sportfishing wrote:
On Mon, 18 Aug 2008 10:34:34 -0400, DownTime
wrote:

- Can you put two different transducers, from two different
manufacturers on the same stern and each will function accordingly? I
guess I am wondering of Garmin's transducer and branx X's(assuming I go
that route) might interfere with each other.
Well, no - not on a small boat. The two signals will interfere with
each other. Even at twenty feet or so, they will interfere - I have a
transducer mounted on my trolling motor which is 21 feet away from the
stern and they still interfere with each other.

Has to do with the angle of the beam.

With respect to shallow water performance, that's natural. Get within
five feet of the bottom and the signal return will be overpowering and
produce nothing but hash. Plus, if the bottom is muddy, you can get
false returns to hard bottom. I've turned down the sensitivity on my
Raymarine DS600 to zero and still can't get a reliable reading under 5
feet.

Shallow water fishing is mostly sight fishing anyway. Even in deeper
water, depending on the species, it's mostly sight fishing.

The best way to handle this situation is to set the offset for your
draft - at least that will tell you what you are getting into shallow
waters.

On my previous Parker, I had a Furuno fishfinder in the cabin and a
Lowrance fishfinder mounted in the cockpit. They were wired to different
transducers on opposite sides of the transom. The transducers were
different frequencies. Both units worked just fine, even when both were
operating at the same time.

Thus, the answer to the question of two transducers is - maybe.

Um...what frequencies?


I don't remember. They were installed in 2003, and I sold that boat off
last year, but before installing them, I spoke with someone at Lowrance,
and he said the two frequencies would not interfere with each other.


--
I am only one, but I am one. I cannot do everything, but I can do
something. And because I cannot do everything, I will not refuse to do
the something that I can do. What I can do, I should do. And what I
should do, by the grace of God, I will do.

— Edward Everett Hale (1822-1909)

Shallow Water Depth Finders
 

On Mon, 18 Aug 2008 15:16:03 -0400, hk penned the following well
considered thoughts to the readers of rec.boats:

|Short Wave Sportfishing wrote:
| On Mon, 18 Aug 2008 14:53:28 -0400, hk wrote:
|
| Short Wave Sportfishing wrote:
| On Mon, 18 Aug 2008 10:34:34 -0400, DownTime
| wrote:
|
| - Can you put two different transducers, from two different
| manufacturers on the same stern and each will function accordingly? I
| guess I am wondering of Garmin's transducer and branx X's(assuming I go
| that route) might interfere with each other.
| Well, no - not on a small boat. The two signals will interfere with
| each other. Even at twenty feet or so, they will interfere - I have a
| transducer mounted on my trolling motor which is 21 feet away from the
| stern and they still interfere with each other.
|
| Has to do with the angle of the beam.
|
| With respect to shallow water performance, that's natural. Get within
| five feet of the bottom and the signal return will be overpowering and
| produce nothing but hash. Plus, if the bottom is muddy, you can get
| false returns to hard bottom. I've turned down the sensitivity on my
| Raymarine DS600 to zero and still can't get a reliable reading under 5
| feet.
|
| Shallow water fishing is mostly sight fishing anyway. Even in deeper
| water, depending on the species, it's mostly sight fishing.
|
| The best way to handle this situation is to set the offset for your
| draft - at least that will tell you what you are getting into shallow
| waters.
|
| On my previous Parker, I had a Furuno fishfinder in the cabin and a
| Lowrance fishfinder mounted in the cockpit. They were wired to different
| transducers on opposite sides of the transom. The transducers were
| different frequencies. Both units worked just fine, even when both were
| operating at the same time.
|
| Thus, the answer to the question of two transducers is - maybe.
|
| Um...what frequencies?
|
|
|I don't remember. They were installed in 2003, and I sold that boat off
|last year, but before installing them, I spoke with someone at Lowrance,
|and he said the two frequencies would not interfere with each other.

SWAG would be.... 50/200 kHz

--
Agent 5.00 Build 1159
Grady-White Gulfstream, out of Oak Island, NC.

Homepage
http://pamandgene.idleplay.net/

Rec.boats at Lee Yeaton's Bayguide
http://www.thebayguide.com/rec.boats

Shallow Water Depth Finders
 

Short Wave Sportfishing wrote:
With respect to shallow water performance, that's natural. Get within
five feet of the bottom and the signal return will be overpowering and
produce nothing but hash. Plus, if the bottom is muddy, you can get
false returns to hard bottom. I've turned down the sensitivity on my
Raymarine DS600 to zero and still can't get a reliable reading under 5
feet.

Shallow water fishing is mostly sight fishing anyway. Even in deeper
water, depending on the species, it's mostly sight fishing.

The best way to handle this situation is to set the offset for your
draft - at least that will tell you what you are getting into shallow
waters.

Thank you for the replies. Part of our issue here, is it could be times
in 2-3 ft of water and it is murky enough to not have a clear vision of
the bottom. In Matlacha pass with the numerous oyster bars, one must
exercise extreme caution.

It appears my dilema is reduced to a Garmin unit for up top and
hopefully they make a splitter for both units to share the transducer,
or replace it all with another brand.

For today, its more a matter of tying everything down and put away, as
Fay is coming. I hope she's a kind soul and nothing like her sisters
Wilma or Katrina.

Shallow Water Depth Finders
 

DownTime wrote:
Short Wave Sportfishing wrote:
With respect to shallow water performance, that's natural. Get within
five feet of the bottom and the signal return will be overpowering and
produce nothing but hash. Plus, if the bottom is muddy, you can get
false returns to hard bottom. I've turned down the sensitivity on my
Raymarine DS600 to zero and still can't get a reliable reading under 5
feet.

Shallow water fishing is mostly sight fishing anyway. Even in deeper
water, depending on the species, it's mostly sight fishing.

The best way to handle this situation is to set the offset for your
draft - at least that will tell you what you are getting into shallow
waters.

Thank you for the replies. Part of our issue here, is it could be times
in 2-3 ft of water and it is murky enough to not have a clear vision of
the bottom. In Matlacha pass with the numerous oyster bars, one must
exercise extreme caution.

It appears my dilema is reduced to a Garmin unit for up top and
hopefully they make a splitter for both units to share the transducer,
or replace it all with another brand.

For today, its more a matter of tying everything down and put away, as
Fay is coming. I hope she's a kind soul and nothing like her sisters
Wilma or Katrina.


Check with the aerial photography guys in your area and see if anyone
has shot the passes you are interested in at low tide. If you can get a
good photo, you'll be able to see most of the oyster bars, and mark them
on a waterproof chart.




--
I am only one, but I am one. I cannot do everything, but I can do
something. And because I cannot do everything, I will not refuse to do
the something that I can do. What I can do, I should do. And what I
should do, by the grace of God, I will do.

— Edward Everett Hale (1822-1909)

Shallow Water Depth Finders
 

On Mon, 18 Aug 2008 15:36:53 -0400, DownTime
wrote:

Short Wave Sportfishing wrote:
With respect to shallow water performance, that's natural. Get within
five feet of the bottom and the signal return will be overpowering and
produce nothing but hash. Plus, if the bottom is muddy, you can get
false returns to hard bottom. I've turned down the sensitivity on my
Raymarine DS600 to zero and still can't get a reliable reading under 5
feet.

Shallow water fishing is mostly sight fishing anyway. Even in deeper
water, depending on the species, it's mostly sight fishing.

The best way to handle this situation is to set the offset for your
draft - at least that will tell you what you are getting into shallow
waters.

Thank you for the replies. Part of our issue here, is it could be times
in 2-3 ft of water and it is murky enough to not have a clear vision of
the bottom. In Matlacha pass with the numerous oyster bars, one must
exercise extreme caution.

It appears my dilema is reduced to a Garmin unit for up top and
hopefully they make a splitter for both units to share the transducer,
or replace it all with another brand.

For today, its more a matter of tying everything down and put away, as
Fay is coming. I hope she's a kind soul and nothing like her sisters
Wilma or Katrina.

Garmin does not make a signal splitter that I'm aware of. Humminbird
does, but..well, Humminbird has had quality issues. Raymarine has one
for the DS series finders as does Lowrance.

The problem with splitting the signal is signal degradation. I have
no experience with splitting the transducer of a depth finder, but in
RF land, it does.

Shallow Water Depth Finders
 

On Mon, 18 Aug 2008 15:16:03 -0400, hk wrote:

Short Wave Sportfishing wrote:
On Mon, 18 Aug 2008 14:53:28 -0400, hk wrote:

Short Wave Sportfishing wrote:
On Mon, 18 Aug 2008 10:34:34 -0400, DownTime
wrote:

- Can you put two different transducers, from two different
manufacturers on the same stern and each will function accordingly? I
guess I am wondering of Garmin's transducer and branx X's(assuming I go
that route) might interfere with each other.
Well, no - not on a small boat. The two signals will interfere with
each other. Even at twenty feet or so, they will interfere - I have a
transducer mounted on my trolling motor which is 21 feet away from the
stern and they still interfere with each other.

Has to do with the angle of the beam.

With respect to shallow water performance, that's natural. Get within
five feet of the bottom and the signal return will be overpowering and
produce nothing but hash. Plus, if the bottom is muddy, you can get
false returns to hard bottom. I've turned down the sensitivity on my
Raymarine DS600 to zero and still can't get a reliable reading under 5
feet.

Shallow water fishing is mostly sight fishing anyway. Even in deeper
water, depending on the species, it's mostly sight fishing.

The best way to handle this situation is to set the offset for your
draft - at least that will tell you what you are getting into shallow
waters.

On my previous Parker, I had a Furuno fishfinder in the cabin and a
Lowrance fishfinder mounted in the cockpit. They were wired to different
transducers on opposite sides of the transom. The transducers were
different frequencies. Both units worked just fine, even when both were
operating at the same time.

Thus, the answer to the question of two transducers is - maybe.

Um...what frequencies?

I don't remember. They were installed in 2003, and I sold that boat off
last year, but before installing them, I spoke with someone at Lowrance,
and he said the two frequencies would not interfere with each other.

Two seperate frequencies is a different issue than two at the same
frequency which is what I assumed the OP was talking about.

Shallow Water Depth Finders
 

Short Wave Sportfishing wrote:
Two seperate frequencies is a different issue than two at the same
frequency which is what I assumed the OP was talking about.

Correct, my original post was assuming they'd be the same frequency. My
experiences with the Garmin units was they can provide either separate
transducers for 50mhz, or 200 mhz, or a combination single transducer
with both frequencies. The unit can be set for either or both, depending
on the needs.

I am no electrical engineer, but as I understand it, the 200mhz was
better suited to the shallower depths, while the 50mhz was more for the
deeper depths. Given most all boating will be in less than 20 ft, with
the occasional voyage to maybe 75-100 (Boca Grande).

Time to start Googling and reading. ;)

Tom - i am curious to know what units you are using and what is your
overall satisfaction with it/them. If you were to outfit your boat
again, would you pick the same one? Same manufacturer? Or completely
different?

Shallow Water Depth Finders
 

On Mon, 18 Aug 2008 17:37:40 -0400, DownTime
wrote:

Tom - i am curious to know what units you are using and what is your
overall satisfaction with it/them. If you were to outfit your boat
again, would you pick the same one? Same manufacturer? Or completely
different?

I wouldn't buy anything other than Raymarine. I've always had good
service (although in the past, they had some issues, but I never
experienced them), quick turnaround on repairs and every time I had an
issue, I received solid advice from experienced technicians - which I
haven't need much of except for an installation that I screwed up on
the last Contender I owned. Strictly my fault, but they stood behind
the unit and replaced it with a new one.

Raymarine - it's as simple as that. :)

Having said that, Furuno makes good gear as well as Si-Tex, Simrad and
Standard Horizon.

It all depends on your price point.

Shallow Water Depth Finders
 

Short Wave Sportfishing wrote:
I wouldn't buy anything other than Raymarine. I've always had good
service (although in the past, they had some issues, but I never
experienced them), quick turnaround on repairs and every time I had an
issue, I received solid advice from experienced technicians - which I
haven't need much of except for an installation that I screwed up on
the last Contender I owned. Strictly my fault, but they stood behind
the unit and replaced it with a new one.

Raymarine - it's as simple as that. :)

Having said that, Furuno makes good gear as well as Si-Tex, Simrad and
Standard Horizon.

It all depends on your price point.

I've liked the looks of the Raymarine line. A friend in the UK works for
company which supplies parts to Raymarine. I intend to look at them as
my first choice. If it helps me catch more fish, price is of no concern.
It simply raises the cost per fillet. ;)

Shallow Water Depth Finders
 

"Short Wave Sportfishing" wrote in message
...
On Mon, 18 Aug 2008 17:37:40 -0400, DownTime
wrote:

Tom - i am curious to know what units you are using and what is your
overall satisfaction with it/them. If you were to outfit your boat
again, would you pick the same one? Same manufacturer? Or completely
different?

I wouldn't buy anything other than Raymarine. I've always had good
service (although in the past, they had some issues, but I never
experienced them), quick turnaround on repairs and every time I had an
issue, I received solid advice from experienced technicians - which I
haven't need much of except for an installation that I screwed up on
the last Contender I owned. Strictly my fault, but they stood behind
the unit and replaced it with a new one.

Raymarine - it's as simple as that. :)

Having said that, Furuno makes good gear as well as Si-Tex, Simrad and
Standard Horizon.

It all depends on your price point.


The Navigator had Raytheon (Raymarine) electronics. The depth finder was a
dual freq unit and worked well in shallow water.
I had an offset programmed into it, (boat's draft was 4.5') and it very
accurately let me know just prior to going aground when it read 2.8'.
Don't ask how I know how accurate it was.

Eisboch

Shallow Water Depth Finders
 

Eisboch wrote:
"Short Wave Sportfishing" wrote in message
...
On Mon, 18 Aug 2008 17:37:40 -0400, DownTime
wrote:

Tom - i am curious to know what units you are using and what is your
overall satisfaction with it/them. If you were to outfit your boat
again, would you pick the same one? Same manufacturer? Or completely
different?
I wouldn't buy anything other than Raymarine. I've always had good
service (although in the past, they had some issues, but I never
experienced them), quick turnaround on repairs and every time I had an
issue, I received solid advice from experienced technicians - which I
haven't need much of except for an installation that I screwed up on
the last Contender I owned. Strictly my fault, but they stood behind
the unit and replaced it with a new one.

Raymarine - it's as simple as that. :)

Having said that, Furuno makes good gear as well as Si-Tex, Simrad and
Standard Horizon.

It all depends on your price point.


The Navigator had Raytheon (Raymarine) electronics. The depth finder was a
dual freq unit and worked well in shallow water.
I had an offset programmed into it, (boat's draft was 4.5') and it very
accurately let me know just prior to going aground when it read 2.8'.
Don't ask how I know how accurate it was.

Eisboch



I have a Ray depthfinder on son of Yo Ho, attached to a through-hull
(not shoot through the hull) transducer. No offset, because it actually
is measuring the distance between the bottom of the hull and "the bottom."

The unit is fine, except its color screen is not nearly as good as the
color screen on competing Garmin units, in terms of how visible and
readable it is in bright sunlight.





--
I am only one, but I am one. I cannot do everything, but I can do
something. And because I cannot do everything, I will not refuse to do
the something that I can do. What I can do, I should do. And what I
should do, by the grace of God, I will do.

— Edward Everett Hale (1822-1909)

Shallow Water Depth Finders
 

"hk" wrote in message
. ..

Eisboch wrote:


The Navigator had Raytheon (Raymarine) electronics. The depth finder was
a dual freq unit and worked well in shallow water.
I had an offset programmed into it, (boat's draft was 4.5') and it very
accurately let me know just prior to going aground when it read 2.8'.
Don't ask how I know how accurate it was.

Eisboch

I have a Ray depthfinder on son of Yo Ho, attached to a through-hull (not
shoot through the hull) transducer. No offset, because it actually is
measuring the distance between the bottom of the hull and "the bottom."


Makes sense on a boat like yours. The Navigator's transducer was obviously
thru-hull amidships. The offset was to account for the rudders and 30"
diameter props.

Eisboch

Shallow Water Depth Finders
 

On Mon, 18 Aug 2008 19:12:58 -0400, "Eisboch" wrote:


"Short Wave Sportfishing" wrote in message
.. .
On Mon, 18 Aug 2008 17:37:40 -0400, DownTime
wrote:

Tom - i am curious to know what units you are using and what is your
overall satisfaction with it/them. If you were to outfit your boat
again, would you pick the same one? Same manufacturer? Or completely
different?

I wouldn't buy anything other than Raymarine. I've always had good
service (although in the past, they had some issues, but I never
experienced them), quick turnaround on repairs and every time I had an
issue, I received solid advice from experienced technicians - which I
haven't need much of except for an installation that I screwed up on
the last Contender I owned. Strictly my fault, but they stood behind
the unit and replaced it with a new one.

Raymarine - it's as simple as that. :)

Having said that, Furuno makes good gear as well as Si-Tex, Simrad and
Standard Horizon.

It all depends on your price point.

The Navigator had Raytheon (Raymarine) electronics. The depth finder was a
dual freq unit and worked well in shallow water.
I had an offset programmed into it, (boat's draft was 4.5') and it very
accurately let me know just prior to going aground when it read 2.8'.

I can't get mine to read accurately at any depth under 5 feet at all.
Even with the discrimination at max and sensitivity down under 30%, I
still get false returns. As a matter of fact, I don't think I've ever
had one that would read accurately under 5 feet.

I do know that the bow unit will read accurately to four feet, but
nothing past that.

Don't ask how I know how accurate it was.

You had to get out to use the telephone on the beach? :)

Shallow Water Depth Finders
 

"Short Wave Sportfishing" wrote in message
...

On Mon, 18 Aug 2008 19:12:58 -0400, "Eisboch" wrote:


Don't ask how I know how accurate it was.

You had to get out to use the telephone on the beach? :)

Not quite. But I *did* find a handy use for a bow and stern thruster.

Eisboch

Shallow Water Depth Finders
 

On Mon, 18 Aug 2008 18:15:42 -0700, "Calif Bill"
wrote:

For shallow water I would look at the cheap Eagles, Humminbirds, etc. Lot
less power. My old, really old, Humminbird did a lot better in shallow
water than my Furuno I now have.

Yes, I've had a couple of inexpensive Hummingbirds and they've been
accurate down to 2 or 3 feet when they're working at all, not very
reliable but cheap to replace. I'm now using one on my RIB dinghy.

Shallow Water Depth Finders
 

On Tue, 19 Aug 2008 00:09:48 -0400, Wayne.B
wrote:

On Mon, 18 Aug 2008 18:15:42 -0700, "Calif Bill"
wrote:

For shallow water I would look at the cheap Eagles, Humminbirds, etc. Lot
less power. My old, really old, Humminbird did a lot better in shallow
water than my Furuno I now have.

Yes, I've had a couple of inexpensive Hummingbirds and they've been
accurate down to 2 or 3 feet when they're working at all, not very
reliable but cheap to replace. I'm now using one on my RIB dinghy.

Bill made a good point about signal strength - the less expensive
units are generally lower power units.

I didn't think of that.

Shallow Water Depth Finders
 

"Gene Kearns" wrote in message
.com...
On Mon, 18 Aug 2008 15:16:03 -0400, hk penned the following well
considered thoughts to the readers of rec.boats:

|Short Wave Sportfishing wrote:
| On Mon, 18 Aug 2008 14:53:28 -0400, hk wrote:
|
| Short Wave Sportfishing wrote:
| On Mon, 18 Aug 2008 10:34:34 -0400, DownTime
| wrote:
|
| - Can you put two different transducers, from two different
| manufacturers on the same stern and each will function accordingly?
I
| guess I am wondering of Garmin's transducer and branx X's(assuming I
go
| that route) might interfere with each other.
| Well, no - not on a small boat. The two signals will interfere with
| each other. Even at twenty feet or so, they will interfere - I have
a
| transducer mounted on my trolling motor which is 21 feet away from
the
| stern and they still interfere with each other.
|
| Has to do with the angle of the beam.
|
| With respect to shallow water performance, that's natural. Get
within
| five feet of the bottom and the signal return will be overpowering
and
| produce nothing but hash. Plus, if the bottom is muddy, you can get
| false returns to hard bottom. I've turned down the sensitivity on my
| Raymarine DS600 to zero and still can't get a reliable reading under
5
| feet.
|
| Shallow water fishing is mostly sight fishing anyway. Even in deeper
| water, depending on the species, it's mostly sight fishing.
|
| The best way to handle this situation is to set the offset for your
| draft - at least that will tell you what you are getting into shallow
| waters.
|
| On my previous Parker, I had a Furuno fishfinder in the cabin and a
| Lowrance fishfinder mounted in the cockpit. They were wired to
different
| transducers on opposite sides of the transom. The transducers were
| different frequencies. Both units worked just fine, even when both
were
| operating at the same time.
|
| Thus, the answer to the question of two transducers is - maybe.
|
| Um...what frequencies?
|
|
|I don't remember. They were installed in 2003, and I sold that boat off
|last year, but before installing them, I spoke with someone at Lowrance,
|and he said the two frequencies would not interfere with each other.

SWAG would be.... 50/200 kHz

--
Agent 5.00 Build 1159
Grady-White Gulfstream, out of Oak Island, NC.

Homepage
http://pamandgene.idleplay.net/

Rec.boats at Lee Yeaton's Bayguide
http://www.thebayguide.com/rec.boats

Probably a bad SWAG. There were some 120khz units out there, and could be
used in conjunction with a 200 khz.

Shallow Water Depth Finders
 

On Thu, 21 Aug 2008 23:07:30 -0700, Calif Bill penned the following
well considered thoughts to the readers of rec.boats:

|
|"Gene Kearns" wrote in message
e.com...
| On Mon, 18 Aug 2008 15:16:03 -0400, hk penned the following well
| considered thoughts to the readers of rec.boats:
|
| |Short Wave Sportfishing wrote:
| | On Mon, 18 Aug 2008 14:53:28 -0400, hk wrote:
| |
| | Short Wave Sportfishing wrote:
| | On Mon, 18 Aug 2008 10:34:34 -0400, DownTime
| | wrote:
| |
| | - Can you put two different transducers, from two different
| | manufacturers on the same stern and each will function accordingly?
| I
| | guess I am wondering of Garmin's transducer and branx X's(assuming I
| go
| | that route) might interfere with each other.
| | Well, no - not on a small boat. The two signals will interfere with
| | each other. Even at twenty feet or so, they will interfere - I have
| a
| | transducer mounted on my trolling motor which is 21 feet away from
| the
| | stern and they still interfere with each other.
| |
| | Has to do with the angle of the beam.
| |
| | With respect to shallow water performance, that's natural. Get
| within
| | five feet of the bottom and the signal return will be overpowering
| and
| | produce nothing but hash. Plus, if the bottom is muddy, you can get
| | false returns to hard bottom. I've turned down the sensitivity on my
| | Raymarine DS600 to zero and still can't get a reliable reading under
| 5
| | feet.
| |
| | Shallow water fishing is mostly sight fishing anyway. Even in deeper
| | water, depending on the species, it's mostly sight fishing.
| |
| | The best way to handle this situation is to set the offset for your
| | draft - at least that will tell you what you are getting into shallow
| | waters.
| |
| | On my previous Parker, I had a Furuno fishfinder in the cabin and a
| | Lowrance fishfinder mounted in the cockpit. They were wired to
| different
| | transducers on opposite sides of the transom. The transducers were
| | different frequencies. Both units worked just fine, even when both
| were
| | operating at the same time.
| |
| | Thus, the answer to the question of two transducers is - maybe.
| |
| | Um...what frequencies?
| |
| |
| |I don't remember. They were installed in 2003, and I sold that boat off
| |last year, but before installing them, I spoke with someone at Lowrance,
| |and he said the two frequencies would not interfere with each other.
|
| SWAG would be.... 50/200 kHz
|
| --
| Agent 5.00 Build 1159
| Grady-White Gulfstream, out of Oak Island, NC.
|
| Homepage
| http://pamandgene.idleplay.net/
|
| Rec.boats at Lee Yeaton's Bayguide
| http://www.thebayguide.com/rec.boats
|
|Probably a bad SWAG. There were some 120khz units out there, and could be
|used in conjunction with a 200 khz.
|

I don't think so, but possibly. Those are the two most common pairs...
until recently. Now, with Furuno, you can get a unit selectable
between 28, 38, 50, 88, 107, and 200kHz).

--
Agent 5.00 Build 1159
Grady-White Gulfstream, out of Oak Island, NC.

Homepage
http://pamandgene.idleplay.net/

Rec.boats at Lee Yeaton's Bayguide
http://www.thebayguide.com/rec.boats