1. main@AmelYachtOwners.groups.io
   Date   
Re: Volvo 24v alternator exciter

Mike Ondra
 

Most helpful Ryan. This makes sense and gives me good direction towards troubleshooting.

I would never have postulated that the relay would reach back to the house 24v batteries for its excitation.

Mike

 

From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of Ryan Meador
Sent: Thursday, October 1, 2020 3:09 PM
To: main@amelyachtowners.groups.io
Subject: Re: [AmelYachtOwners] Volvo 24v alternator exciter

 

Hi Mike,

  1. The exciter relay coil is powered by 12V from the ignition switch, and when energized applies 24V from the house bank (via the indicator bulb) to the alternator.
  2. If the alternator has been recently used, there may be enough residual magnetism for it to self-excite.  The symptoms are exactly as you describe -- it will start working at higher RPM, and keep working even if you lower the RPM again.  But if left unused for long enough, the magnetism will fade and you'll have a dead alternator.
  3. I'm not sure of the exact wiring, but I was under the impression that this is simply a light bulb in series with the exciter wire.  There may also be a diode in there so that it will turn off when the output voltage rises.
  4. I believe so, but I think the exact implementation depends on your alternator model.

Ryan and Kelly

SM 233 Iteration

Boston, MA, USA

 

 

On Thu, Oct 1, 2020 at 2:42 PM Mike Ondra via groups.io <mdondra=verizon.net@groups.io> wrote:

Hi Bill.

 

Thanks for this info and pictures.

 

Operationally at this point, at startup we are not getting 24v alternator output until about 2000-2200 rpm. Then backing down rpm continue with 24v output until about 1200 rpm, and below that not. I have not yet tracked the behavior of the fault light on the 24v panel in these various conditions.

 

I am still trying to understand the circuit logic for the exciter. I cannot find any circuit diagrams for this and I am not at the boat to trace the circuitry. The internet is not providing much relative to exciter theory or engines with both 12v and 24v  systems. Any insights you have on the following would be helpful.

 

  1. Since the 24v alternator is not producing 24v at startup, is the 24v alternator exciter circuit initially powered by the 12v battery (simultaneous with the 12v alternator), or by the 12v alternator after it is producing its 13.5v? There could be a design theory that the 24v alternator is excited by and only AFTER the 12v alternator is producing 13+ volts thereby reducing startup load slightly.
  2. Is it the case that the 24 alternator would be “self-exciting” after generating 24v? If so, is that “self-exciting” dependent on rpm? And if so would this relay drop out the external 12v power for the exciter?
  3. I have noticed that the alternator fault light on the 24v panel historically stayed on after starting the engine while at low rpm, but generally went out after a small increase in throttle. This probably indicates that the 24v alternator was not yet producing 24v. Is the control logic for this fault light any more complicated than that?
  4. Is the exciter circuitry independent of and unrelated to the voltage regulator?

 

Anyway, I look forward to returning to Aletes in a few weeks to pursue this and would like to be as knowledgeable as possible if you have any thoughts.

 

Thanks,

Mike

 

 

From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of CW Bill Rouse
Sent: Sunday, September 27, 2020 9:53 PM
To: main@AmelYachtOwners.groups.io Notification <main@amelyachtowners.groups.io>
Subject: Re: [AmelYachtOwners] Volvo 24v alternator exciter

 

There is a relay that uses the start engine 12v circuit to close the other side of the relay which is supplied with 24 volts. That is how the "excite circuit" works for the 24-volt alternator on all model Amels that I am familiar with that have 24-volt banks and alternators. Here are a few photos:

Attachments:
Re: Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

Danny and Yvonne SIMMS
 

Hi Ken, until you have sailed the Tuamotus you cant imagine how uncharted reefs and bommies can appear, rising vertically from very deep water. The FLS is useful there. Fiji has its own specialties with vertical reefs and no warning. Like all navigation aids, the FLS is one but not to be the only.one used; Charts, eyes, chart plotters too. In  those waters all my senses are on high alert all the time.

Regards

Danny

SM 299

Ocean Pearl

On 02 October 2020 at 06:27 Ken Powers SV Aquarius <ken@...> wrote:

All,

When I was in the  Tuamotus we were crossing the interior of Makemo Atoll from the main town to the East anchorage.  We were going 6kts in 50m and we saw the reef come straight out of the blue and we were able to stop Aquarius.

If we didn't have the Echo Pilot 2D Professional onboard we would have hit.

Ken
Re: Forward looking Sonar - Amel 54 - Furuno NavNet Plotter Network

Danny and Yvonne SIMMS
 

Thanks Ken, we have the Interphase which I believe is out of production now. The biggest difficulty in interpretation is the interference caused by choppy sea. However, having said that, with experience and using the right parameters valuable information is there. I was interested to find what unit you were using in case at some time I might need to replace the Interphase.

Thanks again

Danny

SM 299

Ocean Pearl

On 02 October 2020 at 06:08 Ken Powers SV Aquarius <ken@...> wrote:

Danny and Yvonne,

Aquarius has a Echo Pilot 2D Professional.  It does have a stand alone display, and I like it that way.

Best,

Ken Powers
Aquarius
SM2K#262
Re: Water maker Questions

John Clark
 

Hi Mark,
  As Bill says the Dessalator is a good design.   There are parts available and support form Amel and the Amel Owners Group, I would suggest sticking with it and doing a ground up rebuild

When I bought Annie (SM37) the previous owners had not used the watermaker in over eight years so it was a known project. I suspect your watermaker may be in a similar state.  The good news is that it is fixable with a little bit of time and patience.  I recovered my watermaker replacing the membranes, the membrane endcaps (precautionary as they were original and had stress cracks) and the high pressure hoses(also a precaution).  The pump needed to be disassembled and cleaned before it would build pressure but it was pretty easy to do.  Once back together she ran fine.  It sounds like your pump is functioning so you are probably good there.

The worst issue with the Dessalator was the early control system which as you found out does not actually test the water quality.  I deleted that whole bit of junk and test the water myself before sending it to the tank. I currently have the product water discharging to a free hose that I allow to flow into the cockpit when the unit runs.  I sample with a portable TDS tester then put the hose into the fill nozzle when it is good quality. Nothing goes into the tank without monitoring. I think Bill suggests doing that somewhere below.  That is the best way to ensure your getting good water. And that can be very important if you are underway relying on your tank for potable water.   One bad batch from the WM and poof you have no water at all.

To get SW into your tank you either have a bad o-ring or the membranes have been damaged.  Ether way replace the membranes and o-rings and you are good, and will know for sure the condition of the membranes.

Thoughts:
I installed my membranes in 2017, they are still running just fine.  Run the WM every once in a while for a few hours, never pickled it.   If the boat will be idle, I flush them with fresh water.
Check the end caps on your membrane vessels for signs of cracking.  I think Dessalator has new material available now that won't become brittle.
When you reassemble, watch your hoses when the unit is running, make sure they are not rubbing on anything.
Verify the pressure gauge is reading correctly.  My gauge is not the red/green version but read in Bar.  It is reading 15Bar higher than actual.
Change pressure slowly.  Both up and down.
Run the unit with no pressure to flush the concentrated brine out of the system after you are finished making water.
 I bought a solenoid valve to be able to test the water at the galley sample port and then flip a switch to sent it to the tank.  That is a better solution, but I have been lazy.  
Portable TDS /conductivity testers are cheap and available online.  

Regards,  John Clark
SV Annie SM 37
St Thomas USVI

  






A couple of suggestions
Re: Anyone know who owns Triton?

John Clark
 

Hi Rob, I know the owner.  What's up?
Re: Volvo 24v alternator exciter

Ryan Meador
 

Hi Mike,
  1. The exciter relay coil is powered by 12V from the ignition switch, and when energized applies 24V from the house bank (via the indicator bulb) to the alternator.
  2. If the alternator has been recently used, there may be enough residual magnetism for it to self-excite.  The symptoms are exactly as you describe -- it will start working at higher RPM, and keep working even if you lower the RPM again.  But if left unused for long enough, the magnetism will fade and you'll have a dead alternator.
  3. I'm not sure of the exact wiring, but I was under the impression that this is simply a light bulb in series with the exciter wire.  There may also be a diode in there so that it will turn off when the output voltage rises.
  4. I believe so, but I think the exact implementation depends on your alternator model.
Ryan and Kelly
SM 233 Iteration
Boston, MA, USA


On Thu, Oct 1, 2020 at 2:42 PM Mike Ondra via groups.io <mdondra=verizon.net@groups.io> wrote:

Hi Bill.

 

Thanks for this info and pictures.

 

Operationally at this point, at startup we are not getting 24v alternator output until about 2000-2200 rpm. Then backing down rpm continue with 24v output until about 1200 rpm, and below that not. I have not yet tracked the behavior of the fault light on the 24v panel in these various conditions.

 

I am still trying to understand the circuit logic for the exciter. I cannot find any circuit diagrams for this and I am not at the boat to trace the circuitry. The internet is not providing much relative to exciter theory or engines with both 12v and 24v  systems. Any insights you have on the following would be helpful.

 

  1. Since the 24v alternator is not producing 24v at startup, is the 24v alternator exciter circuit initially powered by the 12v battery (simultaneous with the 12v alternator), or by the 12v alternator after it is producing its 13.5v? There could be a design theory that the 24v alternator is excited by and only AFTER the 12v alternator is producing 13+ volts thereby reducing startup load slightly.
  2. Is it the case that the 24 alternator would be “self-exciting” after generating 24v? If so, is that “self-exciting” dependent on rpm? And if so would this relay drop out the external 12v power for the exciter?
  3. I have noticed that the alternator fault light on the 24v panel historically stayed on after starting the engine while at low rpm, but generally went out after a small increase in throttle. This probably indicates that the 24v alternator was not yet producing 24v. Is the control logic for this fault light any more complicated than that?
  4. Is the exciter circuitry independent of and unrelated to the voltage regulator?

 

Anyway, I look forward to returning to Aletes in a few weeks to pursue this and would like to be as knowledgeable as possible if you have any thoughts.

 

Thanks,

Mike

 

 

From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of CW Bill Rouse
Sent: Sunday, September 27, 2020 9:53 PM
To: main@AmelYachtOwners.groups.io Notification <main@amelyachtowners.groups.io>
Subject: Re: [AmelYachtOwners] Volvo 24v alternator exciter

 

There is a relay that uses the start engine 12v circuit to close the other side of the relay which is supplied with 24 volts. That is how the "excite circuit" works for the 24-volt alternator on all model Amels that I am familiar with that have 24-volt banks and alternators. Here are a few photos:

Image removed by sender.

CW Bill Rouse Amel Owners Yacht School

Address: 720 Winnie, Galveston Island, Texas 77550 

Image removed by sender.Image removed by sender.Image removed by sender.

 

View My Training Calendar

Image removed by sender.

 

 

On Sat, Sep 26, 2020 at 1:57 PM Mike Ondra via groups.io <mdondra=verizon.net@groups.io> wrote:

24 V alternator recently requires higher RPM before producing voltage. Any suggestions about where to start troubleshooting? Exciter circuitry? Thanks!
Mike Ondra
Aletes SM240




Attachments:
Re: Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

Wolfgang Weber
 

Jose,
That is a great news to use the FLS transducer in the B&G through hull and use the B&G inside the hull.
I would like to have the B&G FLS and use it as a second chartplotter with navionics charts.
This could also bring wind and speed to the system with navigation tools.
I have cmap on my Furuno Navnet and Maxsea and discovered some places where navionics on my tablet helped a lot at the US-eastcoast and Bahamas .
Greetings from home in germany to everyone, Boat is still in Fort Lauderdale, borders to US are closed for people from EU/Schengen
Wolfgang Weber SY Elise Amel 54#162
Re: Volvo 24v alternator exciter

Mike Ondra
 

Hi Bill.

 

Thanks for this info and pictures.

 

Operationally at this point, at startup we are not getting 24v alternator output until about 2000-2200 rpm. Then backing down rpm continue with 24v output until about 1200 rpm, and below that not. I have not yet tracked the behavior of the fault light on the 24v panel in these various conditions.

 

I am still trying to understand the circuit logic for the exciter. I cannot find any circuit diagrams for this and I am not at the boat to trace the circuitry. The internet is not providing much relative to exciter theory or engines with both 12v and 24v  systems. Any insights you have on the following would be helpful.

 

  1. Since the 24v alternator is not producing 24v at startup, is the 24v alternator exciter circuit initially powered by the 12v battery (simultaneous with the 12v alternator), or by the 12v alternator after it is producing its 13.5v? There could be a design theory that the 24v alternator is excited by and only AFTER the 12v alternator is producing 13+ volts thereby reducing startup load slightly.
  2. Is it the case that the 24 alternator would be “self-exciting” after generating 24v? If so, is that “self-exciting” dependent on rpm? And if so would this relay drop out the external 12v power for the exciter?
  3. I have noticed that the alternator fault light on the 24v panel historically stayed on after starting the engine while at low rpm, but generally went out after a small increase in throttle. This probably indicates that the 24v alternator was not yet producing 24v. Is the control logic for this fault light any more complicated than that?
  4. Is the exciter circuitry independent of and unrelated to the voltage regulator?

 

Anyway, I look forward to returning to Aletes in a few weeks to pursue this and would like to be as knowledgeable as possible if you have any thoughts.

 

Thanks,

Mike

 

 

From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of CW Bill Rouse
Sent: Sunday, September 27, 2020 9:53 PM
To: main@AmelYachtOwners.groups.io Notification <main@amelyachtowners.groups.io>
Subject: Re: [AmelYachtOwners] Volvo 24v alternator exciter

 

There is a relay that uses the start engine 12v circuit to close the other side of the relay which is supplied with 24 volts. That is how the "excite circuit" works for the 24-volt alternator on all model Amels that I am familiar with that have 24-volt banks and alternators. Here are a few photos:

Image removed by sender.

CW Bill Rouse Amel Owners Yacht School

Address: 720 Winnie, Galveston Island, Texas 77550 

Image removed by sender.Image removed by sender.Image removed by sender.

 

View My Training Calendar

Image removed by sender.

 

 

On Sat, Sep 26, 2020 at 1:57 PM Mike Ondra via groups.io <mdondra=verizon.net@groups.io> wrote:

24 V alternator recently requires higher RPM before producing voltage. Any suggestions about where to start troubleshooting? Exciter circuitry? Thanks!
Mike Ondra
Aletes SM240
Re: Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

James Alton
 

Ken,

   That is a heartstopping event to even ponder!  I can see why you appreciate the Echo Sounder as much as you do.  One question.  Is there an alarm on this unit or do you have to be watching the screen to be alerted to a coming depth change?  

James
SV Sueno
Maramu #220


-----Original Message-----
From: Ken Powers SV Aquarius <ken@...>
To: main@AmelYachtOwners.groups.io
Sent: Thu, Oct 1, 2020 1:27 pm
Subject: Re: [AmelYachtOwners] Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

All,

When I was in the Tuamotus we were crossing the interior of Makemo Atoll from the main town to the East anchorage.  We were going 6kts in 50m and we saw the reef come straight out of the blue and we were able to stop Aquarius.

If we didn't have the Echo Pilot 2D Professional onboard we would have hit.

Ken

Re: Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

Ken Powers SV Aquarius
 

All,

When I was in the Tuamotus we were crossing the interior of Makemo Atoll from the main town to the East anchorage.  We were going 6kts in 50m and we saw the reef come straight out of the blue and we were able to stop Aquarius.

If we didn't have the Echo Pilot 2D Professional onboard we would have hit.

Ken
Re: Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

Jose Venegas
 

Hello all,

I have had a good experience with the FLS from B&G which can be displayed on the B&G Zeus chart plotters together with radar, GPS, AIS, and navigation data.

I installed the sensor using the through hull of the old B&G (Hydra 2000) depth sensor which was a perfect fit. The FLS signal does not seem to interfere with the B&G ultrasonic speed sensor or the old depth sensor.

Also, I am also happy to report that I was able to install the old depth sensor to its back of it, without the need to open a new through hull, by fitting it into a water filled cylinder silicone glued to the hull.

When I installed the FLS first, there were issues with the signal and its interpretation but the most recent updates have taken care of much of it. Also, I noted that it is very important to enter the proper angle of the sensor. As we all know our SM tend to have the stern deeper in the water and that means the angle needs to be adjusted.

Once this is done, the signal is by enlarge OK unless there are waves that affect the angle of the sensor.

Jose Venegas
Ipanema SM2K 278
Curacao
Re: Forward looking Sonar - Amel 54 - Furuno NavNet Plotter Network

Ken Powers SV Aquarius
 

Danny and Yvonne,

Aquarius has a Echo Pilot 2D Professional.  It does have a stand alone display, and I like it that way.

Best,

Ken Powers
Aquarius
SM2K#262
Re: DST800 Thru-Hull Transducer / analogue as replacement for sonic sensor

Gerhard Mueller
 

Dominique

It is a difference if you measure the speed through water (paddle speed transducer) or the speed on ground (gps).
This difference is the current of water you are navigating actually.
--
Gerhard Mueller
Amel Sharki #60
Currently Kalamata, Greece
Re: DST800 Thru-Hull Transducer / analogue as replacement for sonic sensor

Dominique Sery
 

Yes. But my forward scan sounder doesn’t work (it’s 200 kHz like the DST). They can’t work both at the same time.
Dominique
Re: For Sale: S/V Adagio, SM 209 ... www.svadagio.us

Gary Wells
 

Hi everyone,

Well as some of you know Robin and I decided to pull Adagio "off the market" so to speak for a while.  While doing a demonstration a potential issue cropped up and I felt it best to stop showing the boat until it was "resolved".  So, after a lot of consultation, some disassembly and ceaning and a couple of visits by experts (with opinions and estimates) we've decided that the "issue" wasn't that much out of the ordinary.

There were also a couple of family demands which took ~us~ out of circulation for a few weeks. 

So, Adagio is back on and we are ready to move forward again if there is any interest. 

I have updated some specs on the website  (www.svadagio.us)  as we've been doing some work and upgrades along the way (most notably a new set of house batteries). 

 

Thanks to everyone that reached out to us in the past, and to Bill for his help along the way. 

 

Adagio is currently in the Chesapeake Bay near Annapolis.  Our current plan is to move South as the weather continues to cool down and eventually either round into the Gulf of Mexico or to the Caribbean for the Winter.

 

Thanks!!

 

Gary Wells
SM 209, Adagio
Galesville, MD USA

 
Re: Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

Justin Paulsen
 

Pat,
I believe someone further up the thread mentioned a max SOG of 2.5 kts.  Maybe that is part of the issue for you?
Regards,
- Justin
Hopeful future SM/SM2k owner


On Thu, Oct 1, 2020 at 6:57 AM Patrick McAneny via groups.io <sailw32=aol.com@groups.io> wrote:
As I said in a previous post ,I have a new B&G FLS and have not found it useful , the bottom is depicted in a brown color and moving forward I have brown spikes appear in front of the boat as well as elevated bottom depictions that disappear as quickly as they appear. Frustrated I just stopped even ever turning it on ,forgot to even use it once in six months while in the Caribbean. But before this thread goes away ,I have one question. Is it important to keep your SOG very slow to get good results from a FLS ? I think I have tried to use it going less than a 4 or 5  kts. , but maybe that is too fast. It would be great to have in the Bahamas some day ,if it worked.
Thanks,
Pat 
SM Shenanigans


-----Original Message-----
From: Danny and Yvonne SIMMS <simms@...>
To: main@AmelYachtOwners.groups.io
Sent: Thu, Oct 1, 2020 3:33 am
Subject: Re: [AmelYachtOwners] Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

Hi All, I say all because this thread has certainly created interest. We have the Interphase FLS. Like radar and  it seems many other FLS units it needs experience and interpretation. I find it useful and last year in Fiji it saved us from a serious situation. The biggest problem is surface clutter caused by the turbulence of choppy water but with experience it is possible to get useful interpretation. It needs to have all the parameters set right. In talking to other owners with the same unit it is clear that many have not persevered and have given up.
Regards
Danny
SM 299
Ocean Pearl
On 01 October 2020 at 08:58 Stefan Schaufert <mail@...> wrote:

Dear Amelians,

thx a lot for your numerous helpful responses.

For the Amels with the Echopilot 2D units AND the B&G Sonic Speed Sensors and/or Depth Sounders (Standard on the AMEL 54):
  1. Are there problems or something needs to be considered because of the working frequency (200 kHz) of the Echopilot unit - used at the same time as the B&G devices (interferences)?
  2. Where is your Echopilot transducer situated on the bottom? Echopilot recommends to install it „alongside the keel and perhaps 60cm or 2 feet out“. 
I do not find any informations for this in the B&G & Amel manuals.
Thus I am looking forward for your answers.

Best regards
Stefan
A54 #119 Lady Charlyette, Aruba



--
Justin Paulsen
IT Professional

"The world is open, are you?"
Re: DST800 Thru-Hull Transducer / analogue as replacement for sonic sensor

Dominique Sery
 

I use a gps -nmea to loch pulse between the GPS and the Hydra 2000 and it works fine.
https://www.aragon-technologies.com/fr/electronique-marine/remplacement_des_capteurs_de_vitesse_a_roue_a_aubes.php

Dominique
Re: DST800 Thru-Hull Transducer / analogue as replacement for sonic sensor

Slavko Despotovic
 

Thank you. Speed and temperature are working?

Slavko SM 2000 #279
Re: DST800 Thru-Hull Transducer / analogue as replacement for sonic sensor

Dominique Sery
 

Hello,
I have changed the sonic speed for a DST 800 analogic.
It doesn’t work because the sounder is 200 kHz on the DST Airmar and 170 kHz on the B&G.
Dominique
Irko 1 A54-#16
Re: Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

Patrick McAneny
 

As I said in a previous post ,I have a new B&G FLS and have not found it useful , the bottom is depicted in a brown color and moving forward I have brown spikes appear in front of the boat as well as elevated bottom depictions that disappear as quickly as they appear. Frustrated I just stopped even ever turning it on ,forgot to even use it once in six months while in the Caribbean. But before this thread goes away ,I have one question. Is it important to keep your SOG very slow to get good results from a FLS ? I think I have tried to use it going less than a 4 or 5  kts. , but maybe that is too fast. It would be great to have in the Bahamas some day ,if it worked.
Thanks,
Pat 
SM Shenanigans


-----Original Message-----
From: Danny and Yvonne SIMMS <simms@...>
To: main@AmelYachtOwners.groups.io
Sent: Thu, Oct 1, 2020 3:33 am
Subject: Re: [AmelYachtOwners] Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

Hi All, I say all because this thread has certainly created interest. We have the Interphase FLS. Like radar and  it seems many other FLS units it needs experience and interpretation. I find it useful and last year in Fiji it saved us from a serious situation. The biggest problem is surface clutter caused by the turbulence of choppy water but with experience it is possible to get useful interpretation. It needs to have all the parameters set right. In talking to other owners with the same unit it is clear that many have not persevered and have given up.
Regards
Danny
SM 299
Ocean Pearl
On 01 October 2020 at 08:58 Stefan Schaufert <mail@...> wrote:

Dear Amelians,

thx a lot for your numerous helpful responses.

For the Amels with the Echopilot 2D units AND the B&G Sonic Speed Sensors and/or Depth Sounders (Standard on the AMEL 54):
  1. Are there problems or something needs to be considered because of the working frequency (200 kHz) of the Echopilot unit - used at the same time as the B&G devices (interferences)?
  2. Where is your Echopilot transducer situated on the bottom? Echopilot recommends to install it „alongside the keel and perhaps 60cm or 2 feet out“. 
I do not find any informations for this in the B&G & Amel manuals.
Thus I am looking forward for your answers.

Best regards
Stefan
A54 #119 Lady Charlyette, Aruba
2161 - 2180 of 56782