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WAMBLEE S.R.L. UNIPERSONALE

Via Vittori 19

I-48018 FAENZA (RA)

 +39 0546 623891

 +39 0546 623891 (aut.)

 

[email protected]

 

www.wamblee.it

C.f., P.Iva e Reg. Imprese Ra no. 02276360399 - Capitale Sociale 10.000,00 €

Rea no. 187355  -  Albo Imprese Artigiane Ravenna no. 60939

Some questions and answer about MSLD (MOB - Man Over

Board) device

Are MOB devices EPIRBs (Emergency Position Indicator Radio Beacon) or PLBs 

(Personal Locator Beacon)?

No, they aren't. An EPIRB or a PLB 

operate through a satellite network which can detect a

radio signal emitted at 406 MHz, efect a triangulation and determine (with quite good

approximation) the position of the buoy. These devices operate at diferent frequencies
according to the MOB model and they are able to alert the rescues in case of emergency. 

Why should I buy a MSLD (MOB) instead of an EPIRB buoy?

The   two   products   are   diferent   and   have   diferent   functions.   If   you   need   to   have   an

emergency device that is able to signal a serious damage of the vessel the EPIRB is the
suitable device. If you need to have a security system on-board, for the vessel crew, that

must activate in case of man over-board, the MSLDs (MOB) are the right choice.

How do they work?

 

The Wamblee devices of W4XX series start when they come into contact with water (fresh
or   salt)   for   a   continuous   and   superior   time   of   5   seconds   (or   in   alternative   it   can   be

operated manually by the frontal push-button). Once activated, the devices generate a
diferent radio signal according to the MOB model 

W400 model

The W400 device emits a radio signal at  

121.5 MHz with a power of

100mW in AM (Amplitude Modulation). For a correct reception of the
signal,   on   board   of   the   vessel   it   must   be   installed   a   VHF   receiver

capable of receiving the emergency signal.

The unit has a blinking flash for night-time localization.

Page 1 of 5

Summary of Contents for W400

Page 1: ...d of an EPIRB buoy The two products are diferent and have diferent functions If you need to have an emergency device that is able to signal a serious damage of the vessel the EPIRB is the suitable device If you need to have a security system on board for the vessel crew that must activate in case of man over board the MSLDs MOB are the right choice How do they work The Wamblee devices of W4XX seri...

Page 2: ...els and a homing signal at 121 5 MHz with a power of 1 W in AIS mode 0 1W in Homing This signal uses both AIS Automatic Identification System protocol and homing signal for RDF Radio Directional Finder and provides the transmission of the man s position at sea using a GPS module with 66 channels inside the device This device model combines the performance of two MOB models W400 Homing 121 5 Mhz an...

Page 3: ...chnical characteristics of the emission of the signal following is an indicative summary table Device Range covered W400 121 5 MHz 100mW Between shipwrecked person and vessel 2nm Between shipwrecked person and aircraft 10nm W420 AIS1 and AIS2 Between shipwrecked person and vessel 5nm Between shipwrecked person and aircraft 40nm W470 AIS1 and AIS2 121 5 MHz 100mW As indicated above for each single ...

Page 4: ...the batteries The long mode checks that the GPS module is working properly and generates a test radio message containing the position acquired by the GPS module How much is the operation life The MSLD devices of the W4XX series guarantee a battery life of 5 years if not used including test cycles established for each device In case of activation the battery life changes depending on the model Devi...

Page 5: ...sible to trace out the position of the man overboard because the signal is too weak and requests a specific receiving device see problem with SAR Batteries must be replaced quite frequently How do you install this device This equipment has been designed to be used with self inflating jackets and it is normally installed By using the rear flange for passing one of the fabric tapes that connect the ...

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