ACR Electronics RLB-33 2776 Installation instructions

PRODUCT SUPPORT MANUAL
RapidFix™406 and Satellite2 406™ //
Emergency Position Indicating Radio Beacons
(EPIRBs)
Model Nos.: RLB-33 (RapidFix™) and RLB-32 (Satellite2406™)
Y1-03-0148-2 Rev. L

PLEASE READ ALL WARNINGS, CAUTIONS AND NOTES CAREFULLY
CAUTION: Before proceeding to install, test or use your new ACR Electronics’
product, please read this Product Support Manual in its entirety.
If you have questions regarding the contents of the manual, please contact our Technical
Service Department at ACR Electronics, Inc., Telephone [phone]. Please be
ready to provide the technician with the page number you wish to discuss. If you have a
question that is not covered in the manual, please visit our website and access the
Frequently Asked Questions (FAQs) section for further information or call our Technical
Services Department. The website address is www.acrelectronics.com. If in the future
you lose this manual, you may access and print a replacement on the ACR website.
OWNER
VESSEL
RADIO CALL SIGN
MMSI
EPIRB UIN

Table of Contents
SECTION 1 –FOREWORD AND PRODUCT FEATURES.............................................................................................. 1
SECTION 2 –REGISTRATION OF 406 MHZ BEACONS ............................................................................................... 2
2.1 Registration Importance .................................................................................................................................... 2
2.2 Where to Register............................................................................................................................................... 2
2.3 Registration in the United States...................................................................................................................... 2
2.4 Leisure Vessels in the United States................................................................................................................ 2
2.5 Commercial Vessels in the United States........................................................................................................ 2
2.6 Do I Need a Radio Station License?................................................................................................................. 3
2.7 Commercial Vessels World Wide...................................................................................................................... 3
2.8 Registration Outside the United States............................................................................................................ 3
2.9 Change of Ownership or Contact Information ................................................................................................ 3
2.10 Lost or Stolen EPIRBs ....................................................................................................................................... 3
SECTION 3 –FALSE ALARMS ....................................................................................................................................... 4
3.1 Prevention of False Alarms............................................................................................................................... 4
3.2Reporting of False Alarms................................................................................................................................. 4
SECTION 4 –INSTALLATION......................................................................................................................................... 4
4.1 Mounting Location ............................................................................................................................................. 4
4.2 Visual Inspection................................................................................................................................................ 5
4.3 Hydrostatic Release Unit (HRU)........................................................................................................................ 5
SECTION 5 –ACTIVATION AND DEPLOYMENT........................................................................................................... 6
5.1 Bracket Configuration........................................................................................................................................ 6
5.2 Dimension Drawings.......................................................................................................................................... 7
5.3 Configuration Overview..................................................................................................................................... 9
5.4 GPS Acquisition with the RapidFix™ (External GPS) .................................................................................... 9
5.5 Automatic Deployment and Activation - Category I Beacons ....................................................................... 9
5.6 Manual Deployment and Activation.................................................................................................................. 9
5.7 Manual Activation without Deployment ......................................................................................................... 10
5.8 Deactivation ...................................................................................................................................................... 10
5.9 Full Functional Self Test.................................................................................................................................. 10
5.10 External GPS Interface: RapidFix™ Only....................................................................................................... 11
SECTION 6 –CARE AND MAINTENANCE................................................................................................................... 12
6.1 Routine Maintenance ....................................................................................................................................... 12
6.2 Battery Replacement........................................................................................................................................ 12
6.3 Shore Based Maintenance (SBM) for SOLAS Vessels, IMO MSC/Circ. 1039 ............................................. 13
6.4 Annual Testing for SOLAS Vessels, IMO MSC/Circ. 1040............................................................................ 13
SECTION 7 –THE SEARCH AND RESCUE SYSTEM ................................................................................................. 13
7.1 General Overview ............................................................................................................................................. 13
7.2 Satellite Detection ............................................................................................................................................ 13
7.3 Global Positioning System (GPS)................................................................................................................... 14
SECTION 8 –TECHNICAL INFORMATION .................................................................................................................. 15
8.1 Type Approvals and Standards ...................................................................................................................... 15
8.2 Characteristics.................................................................................................................................................. 15
8.3 Accessories ...................................................................................................................................................... 15
8.4 Specifications ................................................................................................................................................... 16
8.5 Warranty............................................................................................................................................................ 17

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APPROVED FOR GMDSS USE
SECTION 1 –FOREWORD AND PRODUCT FEATURES
Thank you for purchasing from ACR Electronics, Inc. We design, manufacture and distribute quality products knowing
they are used to save lives. Many of our products are required to be tested and approved by regulatory bodies
worldwide. We believe in going beyond those specifications to insure our products work when needed in real world
conditions. With proper care and maintenance your ACR product will last for years. It is important that you thoroughly
read this product support manual to understand the proper care and use of your ACR product.
ACR is proud to be certified to ISO 9001: 2000, the International Standard for Quality.
This manual provides installation, operation and maintenance instructions for the RapidFix™ or Satellite2406™
EPIRB, hereinafter referred to as the beacon except where features and functions vary. This manual also describes the
characteristics and details of the beacon system. In the USA, the FCC authorizes the use of 406 MHz Radio beacon by
any ship that is also equipped with a VHF ship station. This will make the 406 MHz radio beacon available for use on
most U.S. ships and boats. Commercial EPIRB carriage requirements are contained in IMO and/or USCG regulations.
Please consult the FCC website at http://www.fcc.gov for complete information regarding beacon carriage
requirements and VHF license requirements.
Product
Model
Number
Product
Number
Category
Class
GPS Interface
RapidFix™
RLB-33
2776
I
1
External
RapidFix™
RLB-33
2777
II
1
External
Satellite2406™
RLB-32
2774
I
1
None
Satellite2406™
RLB-32
2775
II
1
None
Satellite2406™
RLB-32
2774NH
I
2
None
Satellite2406™
RLB-32
2775NH
II
2
None
NOTE: This table represents common configurations of RapidFix and Satellite2 beacons. Other configurations of these
products are available, thus you may have purchased a product configuration not listed in the above table. If this is the
case, match the first four digits of the product you purchased to the above list to determine the representative product
most similar to your product.
WARNING: Some of these products contain a lithium battery
To avoid possible fire, explosion, leakage or burn hazard, do not open, recharge, disassemble or heat beacon
above +70°C (+158°F) or incinerate.
Some of these products contain lithium in the form of a battery: refer to table below for Class 1 batteries. Shipping of
hazardous materials requires special handling and documentation. MSDS sheets along with shipping information
can be found on our website at http://www.acrelectronics.com/hazmat/default.htm.

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SECTION 2 –REGISTRATION OF 406 MHZ BEACONS
2.1 Registration Importance
It is mandatory that the owner of this 406 MHz beacon register it with the national authority.* All 406 MHz beacons
transmit a Unique Identifier Number (UIN) when activated. This UIN is programmed in the beacon based on the
country in which the beacon was purchased. Registration provides the Search and Rescue (SAR) forces with up to
date emergency contact information, which will speed up the launch of a rescue operation. The national authorities use
the information to verify if an actual emergency exists. Valuable search and rescue resources are wasted every year
responding to false alarms. SAR forces will know who you are, what type of vessel you have, your homeport, and who
to contact that might know of your current situation ONLY if your beacon has been properly registered. This will help
expedite the launch of a rescue operation. All 406 MHz beacons are required to have their registration updated every
two years.
*The national authority is the governmental body responsible for EPIRB registration database administration for the
country for which the EPIRB is programmed.
2.2 Where to Register
The owner of a 406 MHz beacon (EPIRB) should register it with the national authority for which the beacon was
programmed (typically the country where purchased), regardless of where they do their boating. However, the beacon
must be reprogrammed if the boat or its owner moves or sails under a different national authority than the one for
which the beacon was previously programmed. Each beacon is programmed with a Unique Identification Number (UIN)
for the country that the unit is shipped to, and will only be accepted for registration in that country. To verify the country,
for which a beacon is programmed, see the label with the UIN on the side of the unit. Units that do not have a country
specified on the UIN label are programmed for the United States.
2.3 Registration in the United States
It is the owner’s responsibility to register 406 MHz beacons that are programmed for and purchased in the United
States. The national authority that accepts registrations in the United States is the National Oceanic and Atmospheric
Administration (NOAA). The fastest and easiest way to register your beacon with NOAA is to use the online registration
database at http://www.beaconregistration.noaa.gov. If internet is not accessible then the owner should complete
the enclosed registration form (Do not confuse this with the ACR Electronics warranty card) and mail with the pre-
addressed, postage paid envelope to:
The information provided on the registration form is used only for rescue purposes. Complete and send the registration
immediately! Registration can be expedited by registering online or by faxing the registration form to Fax # (301) 817-
4565. If the beacon is going to be placed into immediate service, register online or by fax.
All registration forms will be entered in the 406 MHz beacon registration database within 48 hours of receipt. A
confirmation letter, a copy of the actual registration and a proof-of-registration decal will be mailed to you within two
weeks. When you receive these documents, please check the information carefully and affix the decal to your
beacon in the area marked “BEACON DECAL HERE.” If you do not receive confirmation back from NOAA, call toll-free
1-888-212-7283 for assistance.
2.4 Leisure Vessels in the United States
In the United States, leisure vessels are sometimes required to have a radio station license. Leisure vessels that are
required to have a radio station license are required to modify that license when an EPIRB is added to the vessel. For
information on whether you need a radio station license, see section 2.6 (below).
2.5 Commercial Vessels in the United States
In the United States, commercial vessels that are required to have a radio station license are required to modify that
license when an EPIRB is added to the vessel. For information on whether you need a radio station license, see
section 2.6.
SARSAT Beacon Registration NOAA
NSOF, E/SP053
4231 Suitland Road
Suitland, MD 20746
For Faster Service, Register Online!
In the United States:
www.beaconregistration.noaa.gov

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2.6 Do I Need a Radio Station License?
The information in this section is provided for informational purposes only. Always check the FCC’s website at
http://wireless.fcc.gov/services/index.htm?job=licensing&id=ship_stations or call toll-free 1-888-CALLFCC (225-
5322) for the latest information.
You do not need a license to operate a marine VHF radio, radar, or EPIRBs aboard voluntary ships operating
domestically. The term "voluntary ships" refers to ships that are not required by law to carry a radio. Generally, this
term applies to recreation or pleasure craft. The term "voluntary ships" does not apply to the following:
1. Cargo ships over 300 gross tons navigating in the open sea;
2. Ships certified by the U.S. Coast Guard to carry more than 6 passengers for hire in the open sea or
tidewaters of the U.S.;
3. Power driven ships over 20 meters in length on navigable waterways;
4. Ships of more than 100 gross tons certified by the U.S. Coast Guard to carry at least one passenger
on navigable waterways;
5. Tow boats of more than 7.8 meters in length on navigable waterways; and,
6. Uninspected commercial fishing industry vessels required to carry a VHF radio.
7. Ships required to carry an Automatic Identification System (AIS) transceiver by the U.S. Coast Guard
regulations enacted pursuant to the Maritime Transportation Security Act of 2000.
Ships are considered as operating domestically when they do not travel to foreign ports or do not transmit radio
communications to foreign stations. Sailing in international waters is permitted, so long as the previous conditions are
met. If you travel to a foreign port (e.g., Canada, Mexico, Bahamas, British Virgin Islands), a license is required.
Additionally, if you travel to a foreign port, you are required to have an operator permit.
2.7 Commercial Vessels World Wide
406 MHz beacons that are carried on commercial vessels world wide should be registered with the country where the
vessel is flagged regardless of where the vessel operates. When a commercial vessel acquires a 406 MHz beacon
from outside of its home country, the beacon should be reprogrammed for the home country and registered there.
2.8 Registration Outside the United States
In countries other than the United States, 406 MHz beacons are registered with that country’s national authority at the
time of purchase. The sales agent should assist in filling out the forms and sending to that country’s national authority.
To verify that the unit is properly programmed for that country, view the UIN label on the side of the unit. In the event
that the beacon is not programmed for the country it has been purchased in, the sales agent, (if properly equipped) can
reprogram the unit for that country.
2.9 Change of Ownership or Contact Information
It is the owner’s responsibility to advise the national authority of any change in the information on the registration form.
If the current owner of the beacon is transferring the beacon to a new owner, the current owner is required to inform
the national authority by using their online database or by letter, fax or telephone, of the name and address of the new
owner. The new owner of the beacon is required to provide the national authority with all of the information requested
on the registration form. This obligation transfers to all subsequent owners. Registration forms for the United States are
available from NOAA by calling [phone] or by visiting our website at http://www.acrelectronics.com.
2.10 Lost or Stolen EPIRBs
Inform NOAA immediately at 1-888-212-SAVE (7283), or your national authority, that your EPIRB has been lost or
stolen. They will update your EPIRB registration information with the appropriate information.
Stolen EPIRBs - Things That You Need To Do:
Report to your local authorities that the EPIRB has been stolen.
Contact NOAA at 1-888-212-SAVE (7283), or your national authority, with the following information so
your EPIRB registration information can be updated with the appropriate remarks:
- Police Department Name - Police Phone Number - Police Case Number
If your EPIRB were to be activated, the information you provided will be forwarded to the appropriate search and
rescue authorities who will ensure that your EPIRB gets back to you. If someone attempts to register an EPIRB
reported as stolen, NOAA or your national authority will notify the appropriate police department. Visit
http://www.cospas-sarsat.org for more detailed information.

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SECTION 3 –FALSE ALARMS
3.1 Prevention of False Alarms
An ACR 406 MHz EPIRB can be activated in an emergency by two different methods. Whether you have a Category I
or 2, these methods are the same.
1. When the beacon is out of its bracket and in the water, the unit will start transmitting.
2. When the switch is moved to the “ON” position, in or out of the bracket, the unit will start transmitting.
There are a few precautions that should be taken to prevent false alarms.
Do not mount or transport beacon within 3.3 ft/1 m of a magnetic source.
Do not store beacon outside of its bracket if it can get wet.
Do not mount EPIRB backwards in its bracket (lanyard roll must not be visible).
Do not clean beacon with a water hose and brush while out of its bracket.
3.2 Reporting of False Alarms
Should there be, for any reason, an inadvertent activation or false alarm, it must be reported to the nearest search
and rescue authorities. The information that should be reported includes the EPIRB 15-digit Unique Identifier Number
(UIN), date, time, duration and cause of activation, as well as location of beacon at the time of activation.
To Report False Alarms in the United States Contact any of the Following:
Atlantic Ocean / Gulf of Mexico
USCG Atlantic Area Command Center Tel: [phone]
Pacific Ocean Area /
USCG Area Command Center Tel: [phone]
USCG HQ Command Center Tel: [phone]
To Report False Alarms Worldwide contact the national authority where your beacon is registered.
SECTION 4 –INSTALLATION
4.1 Mounting Location
The location selected must be sufficiently rigid to support the weight of the total installation and at the same time
consider vibration, exposure to the elements, exposure to surrounding hazards, such as equipment movement, doors
being opened, accidental covering, personnel traffic, etc., and yet be readily accessible at all times in the event of an
emergency.
Also to be considered in selecting a location for installation is the harmful effect that certain corrosive vapors might
have on the beacon. Under no circumstances should a beacon be jeopardized by any foreign articles being temporarily
or permanently positioned during “at sea” or “in port” activities.
The beacon should face inboard on rail mount applications and should not be subjected to breaking waves.
CAUTION: Care must be taken to prevent any lanyard, line, or other emergency equipment that may be attached to
the beacon from becoming entangled or fouled which could prevent the beacon from being removed in an emergency.
Do not attach the beacon lanyard to the vessel or mounting bracket.
Do not mount the beacon in the vicinity 3.3 ft/1 m of strong magnetic or electrical fields, such as loud speakers, radar
or high power radio transmitter. The beacon should not be mounted closer than 3.3 ft/1 m. to a magnetic navigation
compass.
Mount the beacon in a vertical (antenna upward) position. In certain circumstances, such as medical emergencies or
disabled vessels, manual activation of the beacon for location and homing purposes is sometimes requested. Mounting
in this orientation provides the best homing signal.

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The Category I float-free mounting bracket should be mounted securely to a vertical or horizontal surface (the mount
has predrilled holes for attachment to a flat surface) where there are no overhead obstructions. Location aboard a
vessel must be chosen to allow the beacon to float free of sinking craft and as high as possible, especially on small
vessels. This will help ensure operation of the hydrostatic release unit in the event the vessel capsizes without sinking.
See section 4.3 on removing the HRU.
The Category I float-free mounting bracket should be securely attached to the vessel. The use of #10 stainless steel
hardware (not included) is recommended.
4.2 Visual Inspection
Visually inspect the area surrounding the mounting bracket installation site for hidden hazards, obstacles, etc., that
may have been overlooked during location selection. If there is any doubt as to the ready accessibility to the beacon at
all times or if any condition may appear to be questionable, make a complete and thorough investigation before making
final approval of the installation.
4.3 Hydrostatic Release Unit (HRU)
The ACR HydroFix™ HRU has an expiration date of 2 years from the date of installation or 4 years from the date
manufactured, whichever comes first. Upon installing your beacon or new HRU, permanently scratch the new
expiration date on the HRU date calendar (as seen below).
Figure 1 HRU Date Calendar
The hydrostatic release can be replaced by removing the beacon from the bracket. Firmly press down on the spring at
the bottom of the shelter, then slide the hydrostatic release assembly out of the keyed opening on the spring and
mounting bracket. Discard the old HRU. Check the date manufactured on the bottom of the new HRU and insert the
new hydrostatic release assembly in place by engaging it to the opening of the ejection spring and case. When
replacing the HRU, ACR requires that you do not reuse any parts from the previous HRU. Failure to replace the
entire assembly can cause the bracket to malfunction. Always use original ACR replacement parts (Replacement kit
P/N #9490). Use of unauthorized replacement parts will void your warranty and may cause the bracket to malfunction.
Place the beacon into the mounting bracket, (lanyard facing inward), and replace cover, securing in place with the
cotter pin going through the hydrostatic release rod.
Date of Installation Example:
Date of installation of New HRU or First Installation of
EPIRB including new HRU: August 1, 2009.
This unit will need to be replaced in August of 2011.
Scratch off “AUG 8” and “2011” on the HRU date calendar
Date of Manufacture Example:
On the bottom of the HRU a date of manufacture is pin
stamped: 0808.
This unit will need to be replaced in August 2012. Scratch
off “AUG 8” and “2012” on the HRU date calendar

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SECTION 5 –ACTIVATION AND DEPLOYMENT
5.1 Bracket Configuration

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5.2 Dimension Drawings
Category I Dimension Drawing
NOT TO SCALE
Figure 4
Bracket
Sensor
Magnet
(inside
bracket)

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Category II Dimension Drawing
NOT TO SCALE
Figure 5
Bracket
Sensor
Magnet
(inside
bracket)

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5.3 Configuration Overview
Category I beacons are designed to be automatically deployed and activated. The beacon may also be hand held on
the deck of vessels, or floated in water and attached to a raft or life vest with the lanyard provided. Category II beacons
are designed to be manually deployed from the bracket.
The beacon is designed to operate best while floating in water. Hand held operation should be avoided when
possible. Do not operate inside life raft or under any similar cover or canopy. Use the lanyard to attach beacon to life
raft or person after deployment. Caution - Do not attach lanyard to bracket or vessel. Both models of the beacon can
be deployed and activated manually.
Changes in the laws governing beacons have mandated that the beacon be ready at all times. If certain criteria are
met, the beacon will begin transmitting. The beacon is equipped with sensors to determine if it is in water (a
deployment condition). Category I and 2 brackets both contain a magnet that interacts with other sensors in the beacon
to prevent activation if it is wet (also a deployment condition).
Two conditions must be satisfied for the beacon to automatically activate:
1) It must be out of its bracket
2) It must be in the water
NOTE: Either condition by itself will not automatically activate the beacon.
The beacon is designed to allow the user to perform periodic testing while the beacon is in the release bracket.
Category I: Place the beacon into the release bracket with the spooled lanyard inward. The beacon should now be
firmly held in the Category I bracket and ready for automatic deployment. Do not attach lanyard to bracket.
Category II: Place the beacon into the bracket with the spooled lanyard inward. The beacon should now be firmly held
in the Category II bracket and ready for manual deployment. Do not attach lanyard to bracket. Use the strap and
buckle to secure the beacon. The strap should be adjusted tight against the beacon; tight enough so that it is almost
difficult to engage the buckle. This should be checked periodically.
5.4 GPS Acquisition with the RapidFix™ (External GPS)
The RapidFix™ is fitted with an optical interface to connect with an external Global Positioning System receiver that
will determine the latitude and longitude of its position to be transmitted to the emergency system. When the
RapidFix™ is coupled to a working external GPS receiver, it immediately begins downloading data. Once valid position
data has been obtained, the beacon will attempt to update the positional data every 20 minutes. The RapidFix™ will
always store the last valid positional data it received from the external GPS receiver, even if it is unable to obtain
updated data. It will update this data if and only if it receives new good positional data from the external GPS receiver.
5.5 Automatic Deployment and Activation - Category I Beacons
Automatic deployment and activation occurs if the vessel sinks and the hydrostatic release device frees the beacon
from the bracket allowing it to float to the surface. Built-in sensors detect that the beacon is no longer in its bracket and
is in water. This condition will automatically activate the beacon.
NOTE: Transmissions of the 121.5 mhz and 406 mhz signal will not occur until 50 seconds after activation.
5.6 Manual Deployment and Activation
The Category I beacon can be manually deployed by removing the retaining pin, removing the cover, and then
removing the beacon from the bracket. Once removed, both the Category I and Category II beacons can be activated
by placing the beacon in water OR by lifting the thumb switch to a vertical position, sliding it toward the antenna and
pushing down to the opposite side of the beacon. Activating the beacon in this manner breaks off the Activation
Indicator Plastic Pin and allows the switch to properly seat, showing the " ▌ " symbol (ON).

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NOTE: Some countries may fine vessel owners for causing false alarms. The permanent breakage of the Activation
Indicator Plastic Pin is a positive indication of a manual activation.
5.7 Manual Activation without Deployment
The beacon can be activated while still in its bracket by placing the thumb switch in the ON position. Activation by this
method overrides all sensors and turns the beacon “ON.” The caution note above still applies.
5.8 Deactivation
If manually activated, return the thumb switch to the “OFF” position.
If automatically activated: remove the beacon from the water. The beacon normally takes up to 12 seconds to
deactivate, or place the beacon back into the release bracket.
If the beacon continues to operate after it has been deactivated, remove the four screws holding the unit together and
unplug the battery to disable the unit. Return it to a service center for repair.
5.9 Full Functional Self Test
General Instructions
Please read all instructions before performing any of the tests. Be prepared to record data from the test. Beacons may
be tested in or out of the release bracket. The homing beacon at 121.5 MHz is inhibited during self test. It is strongly
recommended to perform the full functional self test on the beacon on a monthly basis or prior to a voyage.
The self-test is initiated by momentarily lifting the thumb switch to a vertical position and holding it in this position for at
least one second (see figure 7). The initiation of the test is indicated by a beep* and the simultaneous lighting of the
green and red LEDs.
TEST
SUCCESS
FAIL
Initial Test Start
Green, Red LED
Check Data Integrity
Beep, Green, Red
LED
Test stopped
Check 406 MHz Synthesizer
Beep, Green, Red
LED
Test stopped
Check RF Power/Battery
Beep, Green, Red
LED
Test stopped
Successful Test
Green LED, Strobe
Figure 7
Figure 6
ON position:
Notice the
Activation
Indicator
Plastic Pin
has been
broken off.
OFF position:
Note the
Activation
Indicator
Plastic Pin
*NOTE: The “beeps” are a very high-pitched tone
that many people may not be able to hear.

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If the thumb switch is accidentally or inadvertently put in the vertical or test position (not in the OFF or ON position), the
beacon would still be turned ON and will drain the battery. It is very unlikely that this would happen, however, if this
should occur, the beacon will sound a beep once per second and will alternately flash the red and green LEDs at a rate
of one per second until the beacon is turned OFF. It is important that the beacon be turned OFF immediately by
lowering the thumb switch to the OFF position (thumb switch at rest in the front position) if this alert is ever obtained.
Category I Self Test Plug
Easy Access Self Test Plug for Beacons
Remove the new Self Test Plug on the front cover for self tests. Be sure to reattach the plug to protect the
beacon from the elements. Note: You may not be able to see the LEDs but you will hear the beeps.
5.10 External GPS Interface: RapidFix™ Only
Your RapidFix™ comes with a GPS Optical Interface
(transmitter plug with lead wires) and a keyed GPS bezel. The
transmitter plug attaches to your RapidFix™, via the keyed
bezel. The GPS Optical Interface lead wires attach to your
GPS via the NMEA 0183 connector from your GPS receiver.
The black lead wire with gray stripes should be connected to
the positive transmitter pin. The black wire should be
connected to the negative pin.
If the external GPS receiver is operational and the connection
has been correctly made to the optical interface, the green
LED in the optical interface will start flashing.
NOTE: The baud rate output for your GPS receiver NMEA 0183 should be 4800 bps. If you are not sure if your receiver
is NMEA 0183 compliant, check the interface settings listed in your GPS manual. To optimize your GPS Interface
feature be sure that your GPS receiver is equipped with a NMEA 0183 Version 1.5 or higher with GPGGA sentence
enabled.
Using the GPS Interface
Once a compatible, operating GPS receiver is connected to the RapidFix™, the beacon will store data for incorporation
into the emergency message, which is transmitted to the satellite when it is activated in an emergency. This can
provide more accurate positioning data to the Search and Rescue Authority and may lead to a faster rescue. Since the
last valid GPS position data is always kept in the memory of the RapidFix™, the user should take care to make sure
that the GPS position data stored is accurate. This can be accomplished by two methods: first, by always leaving a
properly functioning GPS connected to the RapidFix™ before activation and second, by connecting a properly
functioning GPS with a valid position fix and allowing sufficient time to acquire valid GPS position data. This will take a
Figure 8
Figure 9

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nominal 20 minutes if old GPS position data is stored in the memory of the RapidFix™. If there is no old GPS position
data present, the beacon will acquire current data within a minute of being connected to a GPS with a valid position fix.
You can force the RapidFix™ to update its position at any time by connecting to a GPS with a valid position fix and
initiating the Self-Test (see 5.10). If valid GPS position data is not available, the beacon will not clear the previously
stored GPS position data. In this case, call ACR Customer Service at [phone] for instructions on how to
reset the RapidFix™ with the beacon’s default message.
Testing the GPS Interface
Connect the optical interface plug to the RapidFix™ bezel and allow sufficient time for the GPS receiver to acquire
valid GPS position data (usually less than 1 minute; but it can take up to 20 minutes). Lift the thumb switch to the
vertical (Self-Test) position and release. Your RapidFix™ will confirm that it has acquired valid GPS data by emitting a
beep along with a flash of the red and green LEDs. This will occur approximately 2.5 seconds after the Self-Test.
Updating GPS Position Data
When the beacon is properly connected to a functioning and compatible GPS receiver, GPS position data is
automatically updated about every 20 minutes, while valid GPS position data is present UNLESS the beacon is
activated. The operator can force the acquisition of new GPS position data, by executing a Self-Test with the beacon
connected to a GPS with a valid position fix. This bypasses the normal, programmed, waiting time of 20 minutes for the
automatic update of GPS position data. Once the RapidFix™ has completed the Self-Test sequence by emitting the
beep and flash of red and green LEDs, as described in 5.10, the RapidFix™ will request and acquire new position data
from the GPS. This can take a nominal 15 seconds or up to one minute.
NOTE: While the beacon is not activated, GPS position data will be received and continuously stored by the
RapidFix™. No GPS position data updates will occur while the beacon is activated.
A new RapidFix™ is programmed with the GPS position data set to “default.” This default GPS position data indicates,
upon activation, to the satellite system that the beacon has no valid GPS position stored in memory. Once a
functioning and compatible GPS receiver is properly connected to the beacon, this “default” data will be replaced by
valid GPS position data, as described in the previous sections.
SECTION 6 –CARE AND MAINTENANCE
6.1 Routine Maintenance
At least every ninety days, the Category I mounting bracket and beacon should be inspected for deterioration and/or
residue buildup that may affect the function of the beacon or automatic release. Part of the visual check includes
checking the antenna for tightness. Clean the beacon and the mounting bracket to remove residue buildups. It is
recommended that the beacon and mounting bracket be wiped with a damp cloth.
Carefully inspect the beacon case for any visible cracks. Cracks may admit moisture, which could falsely activate the
beacon or otherwise cause a malfunction. Any cracking observed should be immediately referred to ACR for evaluation
by calling 1-800-432-0227 ext. 2155 in the US, or [phone] ext 2155 elsewhere.
6.2 Battery Replacement
For beacons with model number RLB-33
Battery replacement is due 5 years from date after the beacon placed into service, or by date on beacon whichever is
first. During each inspection, check the time remaining until battery replacement is required. The battery must also be
replaced if the beacon has been activated for any use other than the Self-Test.
For model RLB-32 beacons with “NH” in the model number
RLB-32 beacons with “NH” as part of the model number contain non- hazardous lithium batteries.
It is the beacon owner’s responsibility to record the expiration dates for both the beacon battery and the HydroFix™
hydrostatic release unit. This information must appear on the product itself.
The left side of the battery housing indicates the battery expiry date. Space is provided for the beacon owner to mark
the date the beacon was placed into service. The beacon should be serviced 5 years from the installation date but no
later than the battery expiry date.
Battery replacement is due 5 years from date after the beacon placed into service, or by date on beacon whichever is
first. During each inspection, check the time remaining until battery replacement is required. The battery must also be
replaced if the beacon has been activated for any use other than the Self-Test.

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For both models
Always refer battery replacement and any other beacon service to a factory authorized Service Center. Battery
replacement includes servicing the beacon by replacing all o-rings, testing the water seal and the electrical properties
and doing a full functional test on the unit.
NOTE: There are no user serviceable items inside the beacon. DO NOT OPEN THE BEACON EXCEPT TO DISABLE
IN CASE OF FAULTY ACTIVATION. Otherwise, always have beacon serviced by an authorized Battery Replacement
Center. For the nearest location of a Battery Replacement Center, visit our website at http://www.acrelectronics.com
NOTE: THE BEACON MAY OR MAY NOT REQUIRE SPECIAL SHIPPING INSTRUCTIONS DUE TO THE LITHIUM
BATTERIES AND CHANGES IN SHIPPING REGULATIONS. PLEASE REFER TO ACR’S WEBSITE
http://www.acrelectronics.com FOR PROPER SHIPPING INSTRUCTIONS.
6.3 Shore Based Maintenance (SBM) for SOLAS Vessels, IMO MSC/Circ. 1039
The Maritime Safety Committee approved guidelines for shore-based maintenance of satellite beacons, for the
purpose of establishing standardized procedures and minimum levels of service for the testing and maintenance of
satellite beacons. First Shore Based Maintenance on all ACR EPIRBs is due at the date of the first battery
replacement.
6.4 Annual Testing for SOLAS Vessels, IMO MSC/Circ. 1040
SOLAS regulation IV/15.9 dictates annual testing of 406 MHz satellite EPIRBs. Testing should be carried out using
suitable test equipment capable of performing the relevant measurements. All checks of electrical parameters should
be performed in the self-test mode, if possible.
SECTION 7 –THE SEARCH AND RESCUE SYSTEM
7.1 General Overview
Beacons provide distress alerts via radio transmission on 406 MHz to the LEOSAR satellites of the COSPAS-SARSAT
network. The RapidFix™ can also transmit a distress alert (acquired by the internal or external GPS) to the GEOSAR
network that includes GPS latitude and longitude coordinates.
The message transmitted is unique for each beacon, which provides identification of the transmitter through computer
access of registration files maintained by the National Oceanic and Atmospheric Administration or other national
authority*. Remember, SAR forces will know who you are, what type of vessel you have, your homeport, and who to
contact that might know of your current situation ONLY if your beacon has been properly registered. This will help
expedite the launch of a rescue operation. 406 MHz beacons are required to have their registration updated every two
years.
*The national authority is the governmental body responsible for EPIRB registration database administration for the
country for which the EPIRB is programmed.
Once the 406 MHz signal is relayed through the LEOSAR and/or GEOSAR network, SAR forces determine who is
closest, and then proceed to the beacon using the 121.5 MHz homing frequency.
7.2 Satellite Detection
EPIRBs transmit to the satellite portion of the COSPAS-SARSAT system. COSPAS-SARSAT is an international
system that utilizes Russian Federation and United States’low altitude, near-polar orbiting satellites (LEOSAR). These
satellites assist in detecting and locating activated 406 MHz satellite beacons.
COSPAS and SARSAT satellites receive distress signals from EPIRBs transmitting on the frequency of 406 MHz. The
COSPAS-SARSAT 406 MHz beacon signal consists of a transmission of non-modulated carriers followed by a digital
message format that provides identification data. The 406 MHz system uses Satellite-borne equipment to measure and
store the Doppler-shifted frequency along with the beacon’s digital data message and time of measurement. This
information is transmitted in real time to an earth station called the Local User Terminal (LUT), which may be within the
view of the satellite, as well as being stored for later transmission to other LUTs.

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The LUT processes the Doppler-shifted signal from the LEOSAR and determines the location of the beacon, then the
LUT relays the position of the distress to a Mission Control Center (MCC) where the distress alert and location
information is immediately forwarded to an appropriate Rescue Coordination Center (RCC). The RCC dispatches
Search and Rescue (SAR) forces.
The addition of the GEOSAR satellite system greatly improves the reaction time for a SAR event. This satellite system
has no Doppler capabilities at 406 MHz, but will relay the distress alert to any of the LUT stations. When there is GPS
data included in the distress message, SAR authorities instantly know your location to within 110 yards (100 m). This
speeds up the reaction time by not having to wait for one of the LEOSAR satellite to pass overhead. Because most of
the search and rescue forces presently are not equipped to home in on the 406 MHz Satellite beacons signal, homing
must be accomplished at 121.5 MHz.
7.3 Global Positioning System (GPS)
The GPS system is a satellite group that enables a GPS receiver
to determine its exact position to within 30 m (100 ft.) anywhere
on earth. With a minimum of 24 GPS satellites orbiting the earth at
an altitude of approximately 11,000 miles they provide users with
accurate information on position, velocity, and time anywhere in
the world and in all weather conditions. The RapidFix™ stores this
data into its distress transmission allowing search and rescue
forces to narrow the search into a very small area and thus
minimize the resources required and dramatically increase the
effectiveness of the overall operation.
Figure 12 - GPS Satellite Orbits
Figure 10- Satellite Coverage
Figure 11- GEOSAR Satellite Orbits

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SECTION 8 –TECHNICAL INFORMATION
8.1 Type Approvals and Standards
The RLB-32 and RLB-33 meet the requirements of Federal Communication Commission (FCC) Part 80 and Category I
EPIRBs meet the GMDSS requirements:
Type Approvals
FCC
FCC ID: B668L2ACR-RLB-33 (RLB-33)
FCC ID: B668L2ACR-RLB-32 (RLB-32)
COSPAS-SARSAT
Certificate No. 108 (RLB-33)
Certificate No. 107 (RLB-32)
MED
BSH Certificate No.: 6492/050564-2/2004 (RLB-33)
BSH Certificate No.: 6492/050564-1/2004 (RLB-32)
Notified Body: 0735
Copies of certificates and additional worldwide type approvals are available at http://www.acrelectronics.com.
Applicable Standards
FCC
Part 80 Subpart V –EPIRBs
Part 80 Subpart W –GMDSS (Cat. 1 only)
RTCM
RTCM Recommended Standards for 406 MHz Satellite EPIRBs
COSPAS/SARSAT
C/S T.001 –Specification for C/S 406 MHz Distress Beacons
C/S T.007 –C/S 406 MHz Distress Beacon Type Approval Standard
MED
Annex A.1, Item No. A.1/5.6 –406 MHz (C/S) Satellite EPIRB
Annex B, Model B
IMO
IMO Resolution A.694(17) –General Requirements for GMDSS Equipment
IMO Resolution A.810(19) –Performance Standards for Float-Free Satellite
406 MHz EPIRBs (Cat. 1 only)
8.2 Characteristics
The EPIRB is a buoyant, battery operated unit. The beacon case, with its external antenna, is waterproof. The
semiconductor circuits are mounted within the case assembly that also contains the battery power supply. A “Test/ON”
switch is installed on top of the beacon, along with a strobe light. The Category I beacon must be stored in its special
mount, free of obstructions aboard a vessel for automatic float-off. The unit is self-buoyant and no external flotation
devices are required.
8.3 Accessories
Product Number
Product
9455
SeaShelter2™ Category I Mounting Case
6.5" x 17.1" (16.51 cm x 43.4 cm)
9430
LowPro2™ Category II Mounting Brackets
6.0" x 7.7" (15.2 cm x 19.5 cm)
9388.1
Category I
GPS Interface Plug- Rapid Fix™
9388
Category II
GPS Interface Plug- RapidFix™
9490
HydroFix™ hydrostatic release unit for Category I bracket
9368
Replacement Antenna (for RapidFix™ and Satellite2406™ only)

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8.4 Specifications
406 MHz Transmitter
Frequency
406 MHz
Output Power
5 Watts
Digital Message
Format
RLB-33: Standard Location Protocol2
RLB-32: Standard Location Protocol1
Duration
RLB-33: 520 ms
RLB-32: 440 ms
Frequency Stability
±2 parts per billion/100ms
Rate
400 bps
Modulation
±1.1 radians peak
Encoding
Biphase L
1 Leaves ACR with Serialized U.S. code but can be reprogrammed at a service center to Maritime or other
coded format including nationality of registration.
2 Leaves ACR with Serialized U.S. code but can be reprogrammed at a service center to Maritime MMSI.
Battery Life
Operating
48 hours minimum
Replacement
Interval
5 years or after use in an emergency
Operating Temp
Range
CLASS 1 -40°C to +55°C
(-40°F to +131°F)
CLASS 2 -20°C to +55°C
(-4°F to +131°F)
Storage Temp
Range
CLASS 1 -50°C to +70°C
(-58°F to +158°F)
CLASS 2 -40°C to +70°C
(-40°F to +158°F)
121.5 MHz Transmitter
Frequency
121.5 MHz
Frequency
Tolerance
±50 ppm
Output Power
50-100 mW PEP
Modulation Type
AM (3K20A3X)
Sweep Range
400 to 1200 Hz
Sweep Rate
3 Hz
Duty Cycle
37.5%
General/Environmental
Size
(without antenna)
7.2 x 4.3 x 3.7 in.
(18.4 x 10.9 x 9.3 cm)
Antenna Height
7.39" (18.77 cm)
EPIRB Material
High impact UV resistant plastic
Color
ACR-treuse™ (High Vis Yellow)
Weight
1.9 lbs. (861g)
Waterproof
Exceeds RTCM Standards - Factory Tested to 33 ft/10 m at room temperature
Antenna
Frequency
406 & 121.5 MHz
Polarization
Vertical
VSWR
Less than 1.5/1
Xenon Strobe
Light Color
White
Output Power
0.75 effective candela
Flash Rate
20-30 per minute

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8.5 Warranty
Limited Warranty
This product is warranted against factory defects in material and workmanship for a period of 1 (one) year* from date of
purchase or receipt as a gift. During the warranty period ACR Electronics, Inc. will repair or, at its option, replace the
unit at no cost to you for labor, materials and return transportation from ACR. For further assistance, please contact our
Technical Service Department at ACR Electronics, Inc., 5757 Ravenswood Road, Fort Lauderdale, FL 33312-6645.
Email: [e-mail], Fax: [phone], Telephone: [phone].
This warranty does not apply if the product has been damaged by accident or misuse, or as a result of service or
modification performed by an unauthorized factory. Except as otherwise expressly stated in the previous paragraph,
THE COMPANY MAKES NO REPRESENTATION OR WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, AS TO
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR ANY OTHER MATTER WITH RESPECT TO
THIS PRODUCT. The Company shall not be liable for consequential or special damages.
To place the warranty in effect, register online at www.acrelectronics.com or return the attached card within 10 days.
*Five years for the following products: EPIRB, PLB, S-VDR, SSAS.
ACR Electronics diligently works to provide a high quality Product Support Manual, however, despite best efforts,
information is subject to change without notice, and omissions and inaccuracies are possible. ACR cannot accept
liability for manual contents. To ensure that you have the most recent version of the Product Support Manual, please
visit the ACR website at www.acrelectronics.com.
©2008 by ACR Electronics, Inc., part of Cobham plc. All rights reserved. Reproduction in whole or in part is permitted
only with permission of ACR Electronics, Inc. Ongoing product improvements may change product specifications
without notice.