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.

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)

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?

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)

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.

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?

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

"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.

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.

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)