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AP11 to AP24 questions

Old 02-21-2015, 08:11 AM
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Default AP11 to AP24 questions

I will be installing an NSS16 evo soon. I have an AP11 now. I will be using the NSS to control the AP and reuse the pump. Will the old RFC35 compass work or do I have to replace? I know the gyro compass would be better.

How fast is the reaction time when disengaging the AP using the NSS? I would always have the AP function window displayed when in AP. Trying decide on the OP10.
Old 02-21-2015, 08:32 AM
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RFC35 is a Robnet compass, but I think it's one of the models which can be rewired to NMEA 183. You would then need a NMEA 183 to 2000 converter for interfacing to AC12 (or AC42). If you don't have the budget for RC42 (or Airmar H2183) I would spend my money on a GS25 instead of for a NMEA converter. GS25 (and the identical Lowrance Point-1) are not recommended for autopilot use by Simrad, but it's the compass Lowrance are using with their new pilot (which is based on AP24) and I think it will outperform RFC35.

NSS Evo2 has a dedicated autopilot button so it's very easy and fast to disengage.
Old 02-21-2015, 02:27 PM
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Originally Posted by abbor View Post
RFC35 is a Robnet compass, but I think it's one of the models which can be rewired to NMEA 183. You would then need a NMEA 183 to 2000 converter for interfacing to AC12 (or AC42). If you don't have the budget for RC42 (or Airmar H2183) I would spend my money on a GS25 instead of for a NMEA converter. GS25 (and the identical Lowrance Point-1) are not recommended for autopilot use by Simrad, but it's the compass Lowrance are using with their new pilot (which is based on AP24) and I think it will outperform RFC35.

NSS Evo2 has a dedicated autopilot button so it's very easy and fast to disengage.
Thank you. I will try out the GS25 for sure. Lowrance does not recommend it for AP but it shows up in the picture of the AP package they sell.
Old 02-21-2015, 03:01 PM
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I have used GS25 with AP24 for a couple of days without any major problems.
Old 02-21-2015, 04:10 PM
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Originally Posted by abbor View Post
I have used GS25 with AP24 for a couple of days without any major problems.
it works? I was told it won't work as a heading sensor for an autopilot...
Old 02-21-2015, 06:09 PM
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Originally Posted by Gary999 View Post
I will be installing an NSS16 evo soon. I have an AP11 now. I will be using the NSS to control the AP and reuse the pump. Will the old RFC35 compass work or do I have to replace? I know the gyro compass would be better.

How fast is the reaction time when disengaging the AP using the NSS? I would always have the AP function window displayed when in AP. Trying decide on the OP10.
There is a dedicated "standby" button on the NSS16 EVO, so it is very quick to disengage the pilot. You are getting an AC12 computer correct? Just get the RFC42 compass and put it where the RFC35 is. You are spending a lot on the NSS 16, so why not get the "right" compass?
Old 02-22-2015, 04:31 AM
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Originally Posted by CMEBoston View Post
it works? I was told it won't work as a heading sensor for an autopilot...
Yes, it of course works both for autopilot and MARPA, but not at the same performance as RC42, but not that far behind either. Point-1 which is the Lowrance version of GS25 is the compass which will be used for the Lowrance autopilot (developed by the Simrad autopilot team in Norway). I once selected GS25 as compass for my AP24 for testing and forgot it, I then used the boats for around 20 hours without noticing I used GS25 instead of RC42 or SSC200 which are the two high performance compasses I have. GS25 has a similar 3 x 3-axis sensor configuration (including rate gyro) as Raymarine Evolution.
Old 02-22-2015, 04:57 AM
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Oops!

Point 1 specs from Lowrance

Key Features

NMEA 2000® position and heading sensor
Supports GPS and GLONASS, Galileo-capable with future software update
Supports SBAS including WAAS/EGNOS/MSAS
10 Hz updates for smooth and accurate location
Integrated electronic compass provides 10Hz heading for chart stabilization and radar overlay, plus accurate course over ground even at low speeds
Compact, rugged design for all marine environments and fully waterproof
Includes spat/pole mount
Not recommended for use with MARPA or Autopilot


Lowrance AP package.

What’s in the box
NAC-1 Autopilot Computer 000-11769-001
The brains behind your Lowrance Outboard Pilot system. It contains the steering computer and electronics for the drive unit motor

PUMP-1 Hydraulic Pump 000-11771-001
0.8L reversible hydraulic pump, compatible with Seastar manual helm pumps up to 14ci.

Point-1 Heading and GPS Sensor 000-11047-001
Provides extremely accurate and rapid boat position update, along with heading for accurate boat direction at any speed


Hydraulic Fitting Kit
Everything you need to connect with your existing hydraulic system – including t-connectors, hoses and oil.

Auto/Standby Button
Mounts anywhere on dash and changes Autopilot from STBY to AUTO mode with one press.
Attached Images  
Old 02-22-2015, 05:12 AM
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At the time of introduction GS25 and Point-1 were not considered to be acceptable for autopilot and MARPA, after gaining experience with compasses it seems they have changed their opinion since Point-1 will be used for the Lowrance pilot developed by the good old Robertson/Simrad team.

But I totally agree with pulp friction, with your electronics budget you should get RC42 or H2183.
Old 02-22-2015, 06:29 AM
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Originally Posted by abbor View Post
But I totally agree with pulp friction, with your electronics budget you should get RC42 or H2183.
And that is the problem, I am way over budget!

Did I mention I am getting new 300 Zukes at the same time.........

Last edited by Gary999; 02-22-2015 at 07:29 AM.
Old 02-22-2015, 07:33 AM
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Go for GS25 and be prepared you at some stage may want to upgrade to a better performing compass.
Old 02-23-2015, 09:31 AM
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Both the GS25 and the RC42 have GPS receivers correct?
Old 02-23-2015, 09:34 AM
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No, only GS25 has a GPS receiver. The GS25 GPS is identical to the one integrated in NSS Evo2.
Old 02-23-2015, 12:15 PM
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Ahh, got it. So if I'm picking up the nss16evo2 the GS25 would not be needed, providing I purchase the RC42 heading sensor for radar overlay and MARPA target data?
Old 02-23-2015, 01:24 PM
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Originally Posted by slipfit View Post
Ahh, got it. So if I'm picking up the nss16evo2 the GS25 would not be needed, providing I purchase the RC42 heading sensor for radar overlay and MARPA target data?
Correct!
Old 02-23-2015, 03:32 PM
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I understand the RC42 provides better performance but not sure how I would know the difference. What in particular would be different, at least what might I notice? Better MARPA/radar overlay stuff?
Old 02-24-2015, 01:23 AM
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The autopilot will behave better (more stable) in very low and high speeds. And yes, MARPA will work better.
Old 04-18-2015, 05:21 AM
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I picked up the boat Monday withe the GS25 as heading sensore for the NSS16 evo2. No seperate AP head. The AP was so responsive I actually turned down the high response some. Worked great for the AP. Did not mess with the MARPA yet.

Abbor, thank you for you help!
Old 04-18-2015, 03:44 PM
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The point 1 is getting a software update soon with the update for so. This is ment to make it better and solve the mappa problem from what I have read.
Old 04-22-2015, 01:43 AM
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The point-1 AP antenna provided with the Outboard Pilot has a software update of v2
i already have a point-1 antenna thinking i can use that but have to remove and replace with the new one since they haven't released the Update yet for the point-1 witch is running 1.4.
Shame i cannot use the AutoPilot till there is another update for the touch units!!

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