Jotron Tron 40S MKII EPIRB dash 406 MHz Marine Distress Beacon

Jotron Tron 40S MKII EPIRB is an Emergency Position Indicating Radio BeaconEmergency Position Indicating Radio Beacon dash EPIRB, used to transmit distress signals when a vessel encounters problems at sea. The device is designed for theGMDSS ow SOLASsystem, capable of transmitting digital signals on the frequency406.037 MHzvia the Cospas-Sarsat system and a direction-finding/homing signal on121.500 MHzto assist search and rescue forces in reaching the distress area.

The Tron 40S MkII can be used as amanual EPIRBor installed in a self-righting bracket for automatic release and activation when submerged in water. The device is suitable for commercial vessels, cargo ships, passenger ships, fishing vessels, service vessels, offshore vessels, and any vessel requiring GMDSS distress equipment in accordance with current classification society configurations.

Automatic or Manual Activation in Emergency Situations

The Tron 40S MkIIis a float-free device that can be activated manually or automatically. When installed in a self-righting bracket, the EPIRB is designed to release and activate in an emergency when the device and bracket are submerged in the sea. Jotron documentation also describes brackets with internal safety switches to prevent accidental activation by moisture or spray while the EPIRB is in the bracket.

Once activated, the device transmits the vessel's programmed identification code to the Cospas-Sarsat satellite system, allowing rescue authorities to identify the distressed vessel and deploy an appropriate response. Jotron emphasizes that the EPIRB registration data must be accurate, as rescue authorities often use this information to verify alerts.

406.037 MHz Cospas-Sarsat and 121.5 MHz Homing Transmission

Jotron Tron 40S MKIItransmit distress digital signal on frequency 406.037 MHz with power 406 MHz Transmit Power . At the same time, the homing signal transmitter is activated on frequency 121.500 MHz, with power up to100 mW, assisting the rescue forces in navigation when approaching the area.

The 406 MHz signal is received by the Cospas-Sarsat satellite and relayed to the ground station, while the 121.5 MHz signal is typically used during the local search phase. This is a familiar configuration on many previous-generation GMDSS EPIRBs.

5-year battery, minimum 48 hours operation

According to the datasheet, the Tron 40S MkII uses a Lithium metal 7.2V/7200 mAh battery with a 5-year maintenance life. When activated, the device has a minimum operating time of 48 hours at -20°C, meeting the critical requirements for maritime distress equipment in harsh environments.

During operation, the battery expiration date should be checked periodically and replaced with the correct battery pack. The replacement battery pack is usually supplied as a Battery Replacement Kit / 5 years maintenance kit, along with accessories such as gaskets, labels, equator rings, safety pins, and related details depending on the package.

Omnidirectional antenna and LED enhance identifiability

The Tron 40S MkII uses an omnidirectional antenna to support signal transmission in emergency situations. Jotron documentation also describes the device's antenna as having a flash LED on top, enhancing visual identification when the device is in operation, especially in night conditions or bad weather.

Some suppliers also emphasize the features of improved flash visibility when activatedTron 60AISantenna mounted LED, which help support rescue forces during the approach phase.

Compatible with various Jotron brackets

The Tron 40S MkII can be used with various types of brackets, including manual and self-floating brackets. According to the new Jotron documentation, current brackets for the Tron 40S MkII include FB-6 automatic float free bracket, FB-42 automatic float free bracketTron 60AISFBH-42 automatic float free bracket with heating.

According to the information you provided and the parts catalog, related brackets include:

When ordering or replacing, you must check the correct bracket installed on the ship, the corresponding HRU, and the condition of the protective cover/safety switch.

Self-testing the device without sending a real distress alert

Tron 40S MkII has a self-test function to check the transmitter and battery status without sending a real emergency distress signal. Jotron documentation states that the periodic test function helps confirm the device status, while also warning users not to activate the EPIRB if there is no emergency situation.

This is a very important function during monthly inspections, pre-trip inspections or ship safety survey inspections.

Discontinued, need to check for replacement product

Jotron announces Tron 40S MkII part number 83050 is End of Life since 2022 and no longer commercially available; replacement products are has reached Designed for fast installation, low cost, and ease of use. and has not been commercially available since 2022. Jotron's current product page indicates the replacement products are and in appropriate configurations. These technologies help improve the quality of positioning data when the operating area has corresponding augmented signal support.Tron 60AISCan the EPIRB be self-tested?.

Some suppliers still list the Tron 40S MkII as End of Life but still supported, so this unit is more suitable for inventory replacement, spare parts, legacy system maintenance, or temporary replacement when inspection records permit.

Key Features of Jotron Tron 40S MKII EPIRB

• Marine EPIRB for GMDSS ow SOLAS.
• systems Distress alert transmission .
• Cospas-Sarsat 406.037 MHz406 MHz Transmit Power .
• Homing signal121.500 MHz.
• Homing power to100 mW.
• Can be activated automatically or manually.
• Buoyant device, suitable for use with automatic/manual release brackets.
• Omnidirectional antenna, with a flashing LED on the antenna.
• Lithium metal battery7.2V/7200 mAh, service life5 years.
• Minimum operating time48 hours at -20°C.
• Housingglass-reinforced polycarbonate.
• Compatible with various brackets such as FB-6, FBH-42 and related manual/automatic brackets.
• Features self-test to check transmitter and battery.
• Supports programmingCountry, Call Sign, MMSI.
• Main Part number83050.
• Obsolete; replacement is Tron 40AIS / Tron 60AIS.

Related items, options and spares

Applications of Jotron Tron 40S MKII EPIRB

Jotron Tron 40S MKII EPIRBSuitable for:

• Commercial vessels.
• Cargo ships, container ships, tanker ships.
• Passenger ships.
• Fishing vessels.
• Offshore service vessels.
• Vessels requiring GMDSS EPIRB equipment.
• Systems needing replacement of old Tron 40S MkII EPIRB.
• Vessels requiring a float-free or manual bracket depending on configuration.
• Service units needing spare parts such as HRU, battery kit, bracket, electronic unit.

For vessels operating the Tron 40S MkII, replacement with the same model or spare parts needs to be cross-referenced with classification society requirements, battery life, HRU expiration, and manufacturer's End of Life notification.

Why choose Jotron Tron 40S MKII?

Jotron Tron 40S MKII is a widely used GMDSS EPIRB model, featuring float-free/manual configuration, a minimum operating time of 48 hours, transmitting signals at 406 MHz and 121.5 MHz, a durable casing, an omnidirectional antenna, and an LED light for identification support. The device is suitable for vessels needing to maintain or replace their existing Jotron EPIRB system within the technical documentation's allowances.

However, as the product is Designed for fast installation, low cost, and ease of use.as recommended by Jotron, especially for vessels needing to meet newer EPIRB standards.and in appropriate configurations. These technologies help improve the quality of positioning data when the operating area has corresponding augmented signal support.MX575C DGPS CompassCan the EPIRB be self-tested?Notes when ordering Jotron Tron 40S MKII

Notes when ordering Jotron Tron 40S MKII

, please check:Jotron Tron 40S MKII EPIRByou should check clearly:

• Is the device The Tron 40S MkII or another model like Tron 40GPS MkII.
• Is the Part number correct 83050.
• Is the product a main unit, bracket, battery kit, HRU, or a complete set.
• Does it come with a manual 82819.
• Has the device been programmed correctly with Country, Call Sign, MMSI yet.
• Is the battery's expiry date still valid.
• Is the HRU still valid, and is it the correct type for the bracket in use?
• Is the bracket manual or float-free?
• Do you need bracket FB-6, FBH-42, MB4/MB5 or another type?
• The device is End of Life, technical support and spare parts availability need to be confirmed.
• If installing new, you should check the registration requirements and consider the alternative product Tron 40AIS/Tron 60AIS.
• After installation, self-test, bracket condition, outdoor installation location, EPIRB registration, and ship safety records need to be checked.

FAQ – Frequently Asked Questions

What is Jotron Tron 40S MKII?

Jotron Tron 40S MKII is a 406 MHz EPIRB used to transmit distress signals via the Cospas-Sarsat system and a 121.5 MHz homing signal when the ship encounters problems.

Does the Tron 40S MkII have GPS?

antenna unitThe Tron 40S MkII is a 406 MHz EPIRB without integrated GPS. If a GPS version is needed, check the Tron 40GPS MkIIor a newer suitable EPIRB.

How long will the unit operate when activated?

The Tron 40S MkII operates for a minimum of48 hours at -20°Cafter activation.

What frequency does the Tron 40S MkII transmit on?

The unit transmits a digital distress signal on406.037 MHzwith 5W power and a homing signal on121.500 MHzwith up to 100 mW power.

What brackets does the Tron 40S MkII use?

According to Jotron documentation, brackets for the Tron 40S MkII includeFB-6, FB-42Tron 60AISFBH-42. Per the spare parts list, the unit is also associated with brackets such as MB4/MB5, FB4/FBH4, and FB5/FB6 depending on older configurations.

Is the Tron 40S MkII still in production?

No. Jotron has announcedTron 40S MkII part number 83050 is End of Life since 2022 and no longer commercially available; replacement products are Tron 40AISand in appropriate configurations. These technologies help improve the quality of positioning data when the operating area has corresponding augmented signal support.Tron 60AISCan the EPIRB be self-tested?.

Yes. Tron 40S MkII has a self-test function to check the transmitter and battery status without transmitting a real distress signal.

Yes. Tron 40S MkII has a self-test function to check the transmitter and battery status without transmitting a real distress signal.