TRUE HEADING CTRX-VISION+ WiFi AIS SOTDMA Transponder / 5W transmit power / integr. splitter / NMEA2000 / GPS antenna

SVB item number: 95592 Manufacturer no.: CTRX-VISION+WIFI
The TRUE HEADING CTRX VISION+ WiFi is a modern 5 watt AIS Class B transponder that uses the SOTDMA protocol. Just like the AIS Class A transponders, the CTRX VISION+ also uses the time slot reservation method so that there is always a free time slot available to transmit its position with a higher transmission power of 5 watts and a faster update rate than conventional AIS transponders. With integrated WiFi interface, ideal for use with a tablet or smartphone.

We are happy to programme the radio with your boat-data. Simply click "Add programming" and complete the form. Product details
Recommended retail price: €1,307.81
only  €1,149.95
-12%
You save: €157.86
Do you require programming? Would you like to customise your programming?
7 | in stock
pcs.
MyBoat
Are you already using this item?
Add to my boat now.

Available variants

CTRX-VISION+ SOTDMA AIS Transponder / 5W transmit power / integr. splitter / NMEA2000 / GPS antenna
TRUE HEADING CTRX-VISION+ SOTDMA AIS Transponder / 5W transmit power / integr. splitter / NMEA2000 / GPS antenna
€1,046.01
only €949.95
To product
GPS antenna
Select your programming now
MMSI *
 MMSI number invalid
Call sign *
 3–7 characters (A–Z, 0–9)
Boat name *
 Please fill out correctly
Boat type *
A (m) *
 Whole metres only
B (m) *
 Whole metres only
C (m) *
 Whole metres only
D (m) *
 Whole metres only

Fields marked with * are mandatory

Customised products approx. 2-5 working days
MyBoat
Are you already using this item?
Add to my boat now.

Available variants

CTRX-VISION+ SOTDMA AIS Transponder / 5W transmit power / integr. splitter / NMEA2000 / GPS antenna
TRUE HEADING CTRX-VISION+ SOTDMA AIS Transponder / 5W transmit power / integr. splitter / NMEA2000 / GPS antenna
€1,046.01
only €949.95
To product

Product data

  • SVB item number 95592
  • Manufacturer no. CTRX-VISION+WIFI
  • Description TRUE HEADING - CTRX-VISION+ WiFi AIS Transponder
  • Communication type Transmitter/Receiver
  • Class Class B
  • SOTDMA capability Yes
  • Tx power 5 W
  • Integrated VHF splitter Yes
  • GPS Yes
  • NMEA2000 Yes
  • NMEA0183 Yes
  • WiFi Yes
  • USB Yes
  • DAB No
  • DVB-T2 No
  • FM radio No
  • Ethernet / Network No
  • SD card slot No
  • MMSI number input By customer
  • Programmable Yes
  • Operating voltage 12 V, 24 V

SVB recommends

Image of RA106 VHF Marine Radio Antenna, 0.95 m incl. 25 m antenna cable
-17%
GLOMEX RA106 VHF Marine Radio Antenna, 0.95 m incl. 25 m antenna cable
only €138.95
Image of Marine VHF Antenna / 1.5 m
-17%
GLOMEX Marine VHF Antenna / 1.5 m
only €99.95
Image of Starter Kit / Micro-C
NMEA2000 Starter Kit / Micro-C
only €133.95
Image of T-Piece / Micro-C
NMEA2000 T-Piece / Micro-C
only €21.95

Product details

Note:

The AIS receiver can be programmed by yourself. If you still want the device to be programmed by us, we will charge our programming fee for this service.

Please add the above-mentioned programming accordingly and complete the form in full.
Modern SOTDMA AIS transponder
The TRUE HEADING CTRX VISION+ is a modern 5 watt AIS Class B transponder that uses the SOTDMA protocol. Just like the AIS Class A transponders, the CTRX VISION+ also uses the time slot reservation method so that there is always a free time slot available to transmit its position with a higher transmission power of 5 watts and a faster update rate than conventional AIS transponders.

Switch the AIS transponder to "silent mode" and you can suppress the transmission of your AIS data while still being able to receive AIS data.

Integrated antenna splitter
Save yourself the trouble of installing an additional antenna cable and finding a suitable installation location for an additional VHF antenna. The CTRX VISION+ has a built-in high-performance antenna splitter, which makes it possible to use your existing VHF marine radio antenna for loss-free transmission and reception of radio messages and AIS data.

WiFi support
Transfer received AIS data wirelessly to your tablet or smartphone using the integrated WiFi interface and display data in real time with a compatible navigation app.

Easy installation
Thanks to its compact design and low weight, the TRUE HEADING CTRX VISION+ can be installed quickly and easily with concealed mounting. The PL-SO 239 sockets provided for the antenna and radio connection are compatible with PL-259 plugs most commonly fitted to antenna cables.

The AIS SOTDMA transponder can also be connected to a chart plotter or on-board network in a variety of ways. NMEA2000 Micro-C, serial NMEA0183 and USB interfaces allow for multiple connection options.
The CTRX VISION+ / WiFi can be easily programmed with your personal data using the proAIS2 software. Download the software free of charge from the manufacturer's website.

High-quality GPS antenna included
The high-quality 72-channel GPS antenna included determines current position precisely and reliably at all times. The GPS antenna is connected directly via the TNC connection.

What is the AIS SOTDMA access scheme?
AIS signals are transmitted using two main methods: CSTDMA (Carrier Sense Time Division Multiple Access) and SOTDMA (Self Organising Time Division Multiple Access).

With conventional CSTDMA, the system checks the availability of a free slot before transmitting AIS information. If no slots are free, the system waits until a free slot becomes available. This can lead to a long waiting time before the transmitted AIS signal can be sent.

By contrast, SOTDMA transmissions are more structured. Here, each transmitted AIS signal is coordinated and prioritised with other signals. Instead of waiting for the next free slot, an additional slot is reserved for the next SOTDMA signal. This leads to more structured and more frequent transmissions compared to the conventional CSTDMA method. The AIS - SOTDMA system has a clear advantage over the CSTDMA system, especially in heavily frequented areas such as the English Channel and the waterways around large harbours such as Rotterdam. In addition, SOTDMA AIS transponders operate with an increased transmission power of 5 watts, which significantly increases the range of the transponder.

Note: You can programme the AIS receiver yourself. However, if you would like us to programme the device, we charge our programming fee for this service.
The application for allocation of the MMSI can be found in our Service / Downloads section.

All connections at a glance
True Heading CTRX+ connections
1 NMEA2000 Micro-C (male)
2 Power supply, NMEA0183 (input/output), USB
3 VHF radio (PL socket SO-239)
4 VHF antenna (PL socket SO-239)
5 GPS antenna (TNC socket)


Technical Data
Operating voltage 12 V - 24 V DC
Current consumption: < 220 mA at 12 VDC
Interfaces: NMEA2000 Micro-C (male)
NMEA0183 output (38,400 baud)
NMEA0183 input (4,800 baud)
WiFi
USB
Connections: VHF antenna input PL socket SO-239
VHF antenna output PL socket SO-239
NMEA2000 Micro-C (male)
GPS GNSS antenna connection TNC socket
12-pin connector for power supply, NMEA0183 (input/output), USB and "silent mode"
LED displays: Power, TX Timeout, Error and "Silent Mode"
GPS GNSS receiver: 72 channel GPS-GLONASS-SBAS receiver incl. 10 metre connection cable
Dimensions: 173 x 128 x 53 mm (L x W x H)
Weight: 380 g (only the AIS transponder without accessories)

Features

Discover the features that make this product stand out. From technical details to special functions – we’ve summarized all the key information for you.

Class B
GPS
95592_TRUE HEADING - CTRX-VISION+ WiFi AIS Transponder_S03.jpg
95592_TRUE HEADING - CTRX-VISION+ WiFi AIS Transponder_S04.jpg
95592_TRUE HEADING - CTRX-VISION+ WiFi AIS Transponder_S05.jpg

Delivery contents

  • TRUE HEADING AIS STODMA transponder CTRX-VISION+
  • Power and data cable
  • GPS antenna
  • Quick Start Guide
  • Warranty document
  • Operating instructions
  • Mounting material
  • VHF connection cable
TRUE HEADING CTRX-VISION+ WiFi AIS SOTDMA Transponder 5W transmit power integr. splitter NMEA2000 GPS antenna Image 11 of 11

Documents

en-flag Certificate
PDF (600,57 KB)
en-flag Datasheet
PDF (846,15 KB)
en-flag Manual
PDF (6,88 MB)
multi-flag Short manual
PDF (1,42 MB)

Systems

Product safety

What other SVB customers have to say

100% real reviews

4 customer reviews

4 (out of 4 ratings)
4 Stars
(0)
3 Stars
(0)
2 Stars
(0)
  • Disadvantages
  • Configuration (1)
Henning E.
by Henning E. Flag of Germany 1/23/2026 Verified purchase Variant: 95591
Small & exquisite
After prompt delivery, the installation of the small device, which can be installed almost anywhere and comes with all the necessary accessories for operation and installation, was quick and easy. Settings can be adjusted simply and conveniently using the accompanying, freely available software. Finding a device of this quality and with these features at this price, operating at this speed and even including a working antenna splitter, is quite rare... five stars
  • Advantages
  • Connection options
  • Range of functions
  • Delivery contents
  • Price/performance ratio
  • Reception
  • Configuration
Francisco C.
by Francisco C. Flag of United Kingdom 8/12/2025 Verified purchase Variant: 95592 in use on a Oy Nautor AB - Swan 61
CTRX AIS
True Heading designs most of the existing chips for AIS reception and transmission. Ive had their products for many years and the new CTRX is compact, full featured and very well engineered. Quite happy with the purchase.

As usual fast delivery from SVB
Olivier D.
by Olivier D. Flag of Belgium 7/16/2024 Verified purchase Variant: 95591
Very good installation
Installed on a motorboat, without any problems. I added a small switch on silent mode and stuck the antenna on my dashboard. It is possible to retrieve COGSOG data on the NMEA bus provided that the box is programmed remotely by TeamViewer. Everything is included in the kit except a small switch. I use it in NMEA & Wifi via a router to retrieve data from Navionics. The material seems solid and I had no problem making everything myself. To contact support, it is ideal to do so in Dutch.
  • Advantages
  • Connection options
  • Range of functions
  • Delivery contents
  • Price/performance ratio
  • Reception
  • Configuration
Anton B.
by Anton B. Flag of Germany 6/11/2025 Verified purchase Variant: 95592 in use on a X-Yachts A/S - X-362 Sport
Wifi doesn't work
AIS can be configured and works. Unfortunately, the Wi-Fi cannot be configured, and there's no software option. SVB doesn't offer support; the device has to be removed and sent back to the manufacturer, even though it's likely a software issue. The device has been unavailable for weeks, so I wouldn't buy it again and can only advise against it. I'm curious to see how the problem is resolved.
  • Disadvantages
  • Configuration

Rate product

How would you rate this product?
Disappointed
Completely fails to meet my expectations
Poor
Only some expectations are met
OK
Meets my basic expectations
Good
Slightly better than my general expectations
Excellent
Fully exceeds my expectations
Click on the stars to rate

Customers ask customers

No questions asked yet. Be the first to ask a question!

More "Customers ask customers" available in the following languages

Comparison

Availability / Price
only €1.149 95
7 left in stock
only €949 95
15 in stock
Item no.
95592
95591
Customer ratings
(4)
(3)
Description
TRUE HEADING - CTRX-VISION+ WiFi AIS Transponder
TRUE HEADING - CTRX-VISION+ AIS Transponder
NMEA0183
NMEA2000
Ethernet / Network
WiFi
GPS
Communication type
Transmitter/Receiver
Transmitter/Receiver
Integrated VHF splitter
SOTDMA capability
Class
Class B
Class B
SD card slot
USB
Tx power
5 W
5 W
Operating voltage
12 V, 24 V
12 V, 24 V
DAB
DVB-T2
MMSI number input
By customer
By customer
FM radio
Programmable

Similar items

Product image of TRUE HEADING CTRX-VISION+ SOTDMA AIS Transponder / 5W transmit power / integr. splitter / NMEA2000 / GPS antenna
(3)
TRUE HEADING CTRX-VISION+ SOTDMA AIS Transponder / 5W transmit power / integr. splitter / NMEA2000 / GPS antenna
€1,046.01
only €949.95
15
Product image of RAYMARINE AIS Transmitter/Receiver AIS700 with SOTDMA & Splitter
(6)
RAYMARINE AIS Transmitter/Receiver AIS700 with SOTDMA & Splitter
€1,422.05
only €1,099.95
> 11
Product image of AMEC AIS SOTDMA Transponder B600S / integr. splitter / GPS patch antenna
(10)
AMEC AIS SOTDMA Transponder B600S / integr. splitter / GPS patch antenna
only €949.00
> 17
Product image of AMEC CYPHO150S AIS Receiver
(8)
AMEC CYPHO150S AIS Receiver
only €439.95
7
Product image of WEATHERDOCK AIS-Transponder easyTRX3S Gen.2
(1)
WEATHERDOCK AIS-Transponder easyTRX3S Gen.2
only €1,079.95
7
Product image of NAVICO NAIS-500 AIS-Transponder
NAVICO NAIS-500 AIS-Transponder
€986.51
only €789.95
2
Product image of NAVICO NAIS-500 AIS-Transponder / incl. NSPL-500 Splitter
NAVICO NAIS-500 AIS-Transponder / incl. NSPL-500 Splitter
€1,307.81
only €1,029.95
Expected to be in stock within 1-2 weeks
Product image of ICOM MA-510TR AIS Transponder with Display and GPS Antenna
(4)
ICOM MA-510TR AIS Transponder with Display and GPS Antenna
€1,112.88
only €969.95
2
Product image of DIGITAL YACHT iAISTX Plus SOTDMA AIS Transponder with GV30 GPS-AIS Combi Antenna
(1)
DIGITAL YACHT iAISTX Plus SOTDMA AIS Transponder with GV30 GPS-AIS Combi Antenna
€1,201.90
only €1,099.95
Available on 08.06.2026
Product image of DIGITAL YACHT NOMAD 2 Portable SOTDMA AIS Transponder / 5 W Transmission Power / including VHF & GPS combo antenna
DIGITAL YACHT NOMAD 2 Portable SOTDMA AIS Transponder / 5 W Transmission Power / including VHF & GPS combo antenna
€1,065.05
only €999.95
Expected to be in stock within 2-3 weeks
E-mail Newsletter

Product news, offers & new guide videos. Stay up to date!

WhatsApp

New: Get news from SVB straight to your phone!

TRUE HEADING CTRX-VISION+ WiFi AIS SOTDMA Transponder / 5W transmit power / integr. splitter / NMEA2000 / GPS antenna
View Ratings (4) Questions (4)