ACR Electronics MicroFix 2898 Installation instructions

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* * * WARNING * * *
THIS TRANSMITTER IS AUTHORIZED FOR USE
ONLY DURING SITUATIONS OF GRAVE
AND IMMINENT DANGER
DELIBERATE MISUSE MAY INCUR A SEVERE PENALTY
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.
©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.
Trademarks or registered trademarks are the property of their respective owners.
IF YOU HAVE ANY TROUBLE WITH YOUR
NEW 406 BEACON, DO NOT RETURN IT
TO THE STORE!
CALL ACR ELECTRONICS AT
[phone]. WE WILL HELP YOU
RESOLVE ANY PROBLEMS YOU MAY BE
EXPERIENCING. MANY QUESTIONS CAN
BE ANSWERED OVER THE PHONE.

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Foreword
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.
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.
Table of Contents
SECTION 1 –PRODUCT FEATURES.......................................................................................................................................3
1.1 Getting To Know Your Beacon...................................................................................................................................3
SECTION 2 –REGISTRATION OF 406 MHZ BEACONS .........................................................................................................3
2.1 Registration Importance (Registration is FREE and can be updated as many times as you want)....................3
2.2 Where to Register........................................................................................................................................................3
2.3 Registration in the United States...............................................................................................................................4
2.4 Registration in Canada ...............................................................................................................................................4
2.5 Registration in Other Countries.................................................................................................................................4
2.6 Change of Ownership or Contact Information..........................................................................................................5
2.7 Lost or Stolen Beacons ..............................................................................................................................................5
SECTION 3 –FALSE ALERTS..................................................................................................................................................5
3.1 Prevention of False Alerts..........................................................................................................................................5
3.2 Reporting of False Alerts............................................................................................................................................5
SECTION 4 –OPERATION........................................................................................................................................................6
4.1 Activation (406 MHz and 121.5 MHz)..........................................................................................................................7
4.2 406/121.5 Antenna Position........................................................................................................................................7
4.3 Activation with GPS ....................................................................................................................................................7
4.4 GPS Receiver Orientation...........................................................................................................................................8
4.5 Deactivation.................................................................................................................................................................8
4.6 Self Test........................................................................................................................................................................8
4.7 Battery Witness Seal Life............................................................................................................................................8
4.8 GPS Testing.................................................................................................................................................................8
SECTION 5 –ACCESSORIES...................................................................................................................................................9
5.1 Multi-Function Belt Clip ..............................................................................................................................................9
5.2 Attachment Clip.........................................................................................................................................................10
5.3 Flotation Pouch .........................................................................................................................................................10
SECTION 6 –CARE AND MAINTENANCE.............................................................................................................................10
6.1 Routine Maintenance ................................................................................................................................................10
6.2 Battery Replacement.................................................................................................................................................11
SECTION 7 –THE SEARCH AND RESCUE SYSTEM...........................................................................................................11
7.1 General Overview......................................................................................................................................................11
7.2 Satellite Detection .....................................................................................................................................................11
7.3 Global Positioning System (GPS)............................................................................................................................12
SECTION 8 –TECHNICAL INFORMATION............................................................................................................................12
8.1 Characteristics...........................................................................................................................................................12
8.2 Applicable Documents..............................................................................................................................................12
8.3 Specifications............................................................................................................................................................13
WARNING: Contains Lithium Battery
To avoid possible fire, explosion, leakage or burn hazard, do not open, recharge,
disassemble or heat beacon above +70ºC (+158ºF) or incinerate.
These products may contain lithium in the form of a battery. 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 1 –PRODUCT FEATURES
The PLB-300™ (referred to as “beacon”) is available in various configurations, as shown in the table below.
The ResQFix™ includes accessories oriented for marine/boating use and the MicrOFix™ includes accessories
more commonly used in outdoor and aviation activities.
Product
Model Number
Product Number
Attachment
Clip
Multi-Function
Belt Clip
Flotation
Pouch
ResQFix™
PLB-300
2897
X
X
MicrOFix™
PLB-300
2898
X
1.1 Getting To Know Your Beacon
NOTE: The appearance of your beacon may vary slightly from this picture.
SECTION 2 –REGISTRATION OF 406 MHz BEACONS
2.1 Registration Importance (Registration is FREE and can be updated as many times as you want)
It is mandatory that the owner of this 406 MHz beacon registers it with the national authority*. All 406 MHz
beacons transmit a Unique Identifier Number (UIN) when activated. This UIN is programmed in the PLB based
on the country in which the beacon was purchased. Registration provides the Search and Rescue (SAR)
forces with emergency contact information, and will speed the launch of a rescue operation. The National
Authorities use the information to verify if an actual emergency exists. Valuable Search and Rescue personnel
are put at risk and resources are wasted every year responding to false alerts. For beacons that are not
registered, SAR authorities will not know who you are, or who to contact regarding additional information about
your current situation. This could delay the launch of a rescue operation.
*The national authority is the governmental body that is responsible for Beacon Registration Database
administration in the country for which the beacon is programmed.
2.2 Where to Register
You must register your beacon with the national authority of your resident country. Verify that your beacon’s
UIN is programmed for your resident country, regardless of where you do your adventuring. To verify the
country for which a beacon is programmed, see the label with the UIN on the back of the unit. Units that do not
have a country specified on the UIN label are programmed for the United States. If you should move to a new
country, you must register your beacon with the national authority of that country and have the UIN
Multi Language Label: This
optional label may be applied
for ease of use.
FRONT BACK
GPS Antenna
Location
Figure 1
Antenna: Wrapped
around beacon.
Keypad:
(discussed in
section 4)
UIN Label: Applied at the
factory, the 15 character
hexadecimal number is unique
to each beacon.
Registration Decal Supplied By
Some Countries: Once the beacon
is registered, the label goes here.
Activation Button
Cover
Battery expiration label with the
month/year the battery needs
to be replaced.

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reprogrammed for that country (if necessary). For a list of the national authorities in your area, please view
them at http://www.cospas-sarsat.com/Management/listOfParticipants.htm
2.3 Registration in the United States
It is your responsibility to register your 406 MHz beacon(s) 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).
There are three options by which the beacon can be registered:
A. The fastest and easiest way to register your beacon with NOAA is to use the online registration database.
B. If the internet is not accessible to you, complete the enclosed registration form. Do not confuse this with
the ACR Electronics warranty card. Mail with the pre-addressed, postage paid envelope to:
C. Faxing your registration is also acceptable. Fax the registration form to fax # [phone].
Note that the information you provide on the registration form is used only for rescue purposes. Complete and
send the registration immediately. 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, then affix
the decal to your beacon in the area marked “BEACON DECAL HERE.” If you do not receive confirmation
back from NOAA in the expected timeframe, call toll free [phone] for assistance.
2.4 Registration in Canada
The national authority in Canada is the NSS (National Search & Rescue Secretariat). Canadian residents can
register online at http://beacons.nss.gc.ca/. For more information please contact the NSS at [phone]
or [phone].
2.5 Registration in Other Countries
In countries other than the United States and Canada, 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.
For the fastest service, register online!
In the United States:
www.beaconregistration.noaa.gov
NOAA SARSAT Beacon Registration
NSOF, E/SP3
4231 Suitland Road
Suitland, MD 20746
National Search and Rescue Secretariat
400-275 Slater Street
Ottawa, Ontario K1A 0K2

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2.6 Change of Ownership or Contact Information
It is your 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
1 [phone] or by visiting our website at www.acrelectronics.com.
2.7 Lost or Stolen Beacons
Things you need to do if your beacon is stolen:
Report to your local authorities that the beacon has been lost or stolen.
Contact NOAA at 1-888-212-SAVE (7283), or your national authority, with the following information so
your beacon registration information can be updated with the appropriate remarks:
oPolice Department Name
oPolice Phone Number
oPolice Case Number
If the beacon were to be activated, the information you provided will be forwarded to the appropriate search
and rescue authorities who will ensure that your beacon gets back to you. If someone attempts to register an
beacon reported as stolen, NOAA or your national authority will notify the appropriate police department. Visit
www.cospas-sarsat.org for more detailed information.
SECTION 3 –RESPONSIBLE USE
The personal locator beacon is a distress signaling device of last resort, for use when all other means of self-
rescue have been exhausted; where the situation is grave and imminent, and the loss of life, limb, eyesight or
valuable property will occur without assistance. Deliberate misuse may incur a severe penalty.
3.1 Prevention of False Alerts
A false alert is any activation of the beacon, intentional or otherwise, that does not result from a situation of
grave and imminent danger.
Be sure to do the following:
Register your beacon. This does not reduce false alert rates; however, it does have a dramatic effect
on the impact of a false alert. When the beacon is properly registered, the situation can be resolved
with a phone call.
Be careful who you leave your beacon with. Make sure that they how to use it, and that they
understand the ramifications of causing a false alert. A lot of false alerts are generated by curious
individuals. If you notice the beacon is flashing the red or green LED and BEEPING periodically on its
own, this likely means it has accidentally been activated and needs to be shut off and reported.
The COSPAS - SARSAT satellites detect distress beacon transmissions immediately. These satellites will
locate the transmission within a few minutes of the beacon activation. If you're not in distress, you just
generated a false alert.
NOTE: If you report a false alert and the authorities have not received the signal, don’t worry. This may mean
the beacon was deactivated before transmitting the signal.
3.2 Reporting of False Alerts
A false alert must be reported to the nearest search and rescue authorities. The information reported must
include the beacon Unique Identifier Number (UIN), date, time, duration and cause of activation, as well as
location of beacon at the time of activation. If the beacon is registered outside of the United States, contact
your national authority.
United States Air Force Rescue Tel: [phone]
Coordination Center (AFRCC)

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False alerts that are rectified must be reported to the AFRCC to let them know that the situation has been
corrected and everything is fine. Responsibly reporting these events to the AFRCC or your proper authority will
not incur a penalty, but deliberate misuse or not notifying the proper authority may incur a severe penalty.
TO REPORT FALSE ALERTS WORLDWIDE, CONTACT THE NATIONAL AUTHORITY WHERE YOUR
BEACON IS REGISTERED.
SECTION 4 –OPERATION
The ResQFix™ and MicrOFix™ 406 GPS beacon models are designed to be manually deployed and
activated. They are only to be activated when all other means of self-rescue have been exhausted. When
properly registered as required, the activation of the beacon tells Search and Rescue who you are, where you
are, and that you are facing a life threatening situation.
Figure 2 - Key Pad Functions
NOTE: If you notice the PLB is flashing the red or green LED and BEEPING periodically on its own, this
likely means it has accidentally been activated and needs to be shut off and reported.
ON / OFF Button
Self Test / GPS Test
Button
Activation Diagram
When activated:
(Red LED) 406 MHz Only
(Green LED) 406 MHz
includes GPS data
(IR LED) Programming Interface
(Not owner accessible)

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4.1 Activation (406 MHz and 121.5 MHz)
To activate your beacon in a distress situation, follow these steps:
1) Unfasten the antenna from the case.
2) Move it into the upright position (see figure 3 below).
3) Depress the ON/OFF button for 1 full second.
You will hear a BEEP and your beacon is now activated. While transmitting your distress signal, the red LED
will flash once every 2 seconds alerting you that your beacon is active. An additional BEEP will sound every
time your beacon transmits data to the satellites (roughly every 50 seconds).
4.2 406/121.5 Antenna Position
For maximum performance you must deploy the beacon antenna into the proper position (see figure 3). If at all
possible, be sure the antenna is positioned facing the sky and avoid submerging in water. This device is
intended to operate on or above the ground or while attached to your person above the water line.
4.3 Activation with GPS
Your beacon is equipped with an internal GPS receiver. Once activated, the GPS engine will start up and
search to find your LAT/LON and incorporate it into your 406 MHz signal. As soon as the GPS receiver
acquires good positioning data the red LED will stop blinking and the green LED will begin flashing once every
2 seconds.
The same GPS data will be sent with each 406 MHz signal for the next twenty minutes. At that time the
internal GPS will start up again, search to find your LAT/LON and incorporate it into your next 406 MHz signal.
If for any reason the internal GPS cannot update your LAT/LON, your last position will be used for the next
four hours. At that time the green LED will stop blinking and the red LED will flash once every 2 seconds until
new GPS data is obtained.
Figure 3 - Activation




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Figure 4 –GPS Receiver Location
4.4 GPS Receiver Orientation
When activated it is critical that you do not cover the
beacon with any body part, water, clothing, etc. The GPS
receiver is located under the bottom portion of the case
behind the ResQFix™ or MicrOFix™ logo (see figure 4).
To ensure optimum performance of the GPS receiver, the
beacon needs to have an unobstructed view of the sky.
Avoid submerging the GPS receiver in water if possible.
Water will shield and inhibit the GPS receiver and may
cause difficulties obtaining your GPS coordinates. Avoid
leaning over the beacon to view blinking LED as you may
shield the GPS reception.
4.5 Deactivation
To deactivate your beacon, depress the ON/OFF button for 1 second. Once the beacon is deactivated, all
blinking LED’s will stop signifying that the beacon is no longer sending your distress message.
4.6 Self Test
ACR strongly recommends performing the self test once per month, or at least two weeks prior to a trip
allowing enough time for service should your beacon require it.
A self test is initiated by holding the self test button for at least ½ second and less than 5 seconds. Your
beacon will sound an initial beep and flash the green LED to signify the test has begun. The green LED will
flash a second time to indicate that the self test was successful.
NOTE: The beep is a very high pitch that many people are unable to hear.
Components Tested: Data Integrity and Memory; 406 MHz Synthesizer; RF Power/Battery; GPS header
If a RED LED flashes at the completion of the self test, your beacon has failed. Repeat the self test. If the
failure persists, contact ACR Electronics or an authorized Battery Replacement Center for servicing of your
beacon.
NOTE: During a self test your beacon will send a 406 MHz signal coded as self-test to the satellite system.
The 121.5 MHz homing signal is inhibited during self test; this allows you to test your beacon any time during
the day without causing false alerts.
Self Test Sequences
Self Test Guide ( Green LED Red LED)
Green LED, 4 BEEPS, Green LED
Successful Self Test
Green LED, Less than 4 BEEPS, Red LED
Failed Self Test –Return beacon to ACR
Red LED, 4 BEEPS, Green LED
Successful Self Test –At least 1 hour of battery
power has been depleted, have battery replaced.
Red LED, Less than 4 BEEPS, Red LED
Failed self test –Return unit to ACR for service.
4.7 Battery Witness Seal Life
If your beacon flashes an initial Red LED at the beginning of the Self Test, this indicates that your electronic
witness has been broken and you have used more than 1 hour of battery life. While the beacon will still
operate normally in a distress situation, ACR strongly recommends you have your battery replaced and the
electronic witness reset to ensure that you will have 24 hours of battery power.
4.8 GPS Testing
This test is NOT required as 100% of all GPS receivers that leave ACR have been tested to ensure they
perform correctly. However, if you would like to ensure your GPS receiver is working, please follow these
instructions very closely.
CAUTION: To conserve battery power the following test should not be performed more than once during the
five-year life of the battery pack!

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
Figure 5 - Belt Clip

NOTE: The GPS receiver is located under the front portion of the case (see figure 4). It is imperative that the
receiver is not obstructed during self test or activation to ensure that the GPS receiver is acquiring your
latitude (LAT) and longitude (LON) position. This test must be performed outside with a clear view of the sky.
Press the self-test button for greater than 5 seconds. Observe the beacon for the entire GPS test. A BEEP and
green LED will indicate that the GPS has been turned ON. The beacon will BEEP every 5 seconds and the
GPS will remain ON until LAT/LON coordinates have been obtained or until 10 minutes have elapsed. If good
LAT/LON data has been obtained, the GPS will be turned OFF and the green LED will light for at least 3
seconds along with a long beep. This LAT/LON data is not saved for use. The green LED is proof that the
GPS is functioning properly and that the beacon is in a location or environment where it can receive the
necessary signals from satellites. If the GPS does not acquire good LAT/LON data, the GPS will turn OFF
after 10 minutes and a RED LED will light for 3 seconds along with a long beep.
GPS Test Sequences (max. 10 minutes)
GPS Test Guide
Green LED and BEEP at start followed by continuous
BEEPS every 5 seconds, Green LED & Long BEEP
Successfully acquired GPS data
Green LED and BEEP at start followed by continuous
BEEPS every 5 seconds, Red LED & Long BEEP
GPS data was not successfully acquired
SECTION 5 –ACCESSORIES
5.1 Multi-Function Belt Clip
The MicrOFix™ comes standard with a multi-function belt clip. To
install the clip, simply align the bottom tabs on the clip with the insert
holes located on the bottom of the beacon. Snap the clip in place by
pressing the top of the clip so that the two top tabs engage in the two
insert holes on the top of the beacon (see figure 5). To remove the
clip, push up and back on the top tabs one at a time to disengage the
clip from the beacon.
The MicrOFix™ clip has been designed to accommodate your
extreme adventures. You can secure your beacon directly to backpack
webbing straps, life jackets or belts to ensure the beacon is close at
hand. ACR recommends that you secure your beacon someplace on
your person that is easily accessible in case of an emergency for rapid
activation. Ensure the beacon is secured firmly and is protected before
heading out to avoid damage or loss.
NOTE: ACR recommends that once you have clipped your beacon
in place that you also anchor the beacon with the lanyard to your life
jacket, backpack, etc. to ensure the unit will not be lost if it should
break out of the clip.

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Figure 6- Attachment Clip


5.2 Attachment Clip
The ResQFix™ comes standard with an attachment clip. To
install the clip, simply align the bottom tabs on the clip with the
insert holes located on the bottom of the beacon. Snap the clip in
place by pressing the top of the clip so that the two top tabs
engage in the two insert holes on the top of the beacon (See
figure 6). To remove the clip, push up and back on the top tabs
one at a time to disengage from the beacon.
The ResQFix™ clip has been designed to secure your beacon
directly to life jacket webbing straps or belts to ensure the beacon
is close at hand. ACR recommends that you have a strap on your
life jacket in the shoulder area for attachment of the ResQFix™.
The beacon should hang with the GPS receiver up in order to
give it the best possible view of the sky. It is also recommended
that you try your life jacket on in the water to see how you float in
it and where to best locate the beacon so that the beacon is not
in the water. You may choose to carry your beacon in a pocket
but you should have a strap installed on your life jacket to attach
the beacon when it is activated. This will leave your hands free
while treading water.
5.3 Flotation Pouch
The ResQFix™ is a Category I beacon thanks to the neoprene flotation
pouch attached to the lanyard. The pouch has been designed to work with
and without the attachment holster. Simply open the bottom of the pouch
using the Velcro and slide the top of the ResQFix™ into the pouch with the
GPS receiver exposed through the special cut out hole on the front
underneath the ACR logo.
The neoprene flotation pouch will accommodate the ResQFix™ and the
attachment clip. The neoprene pouch is designed to float the beacon if it is
dropped in the water.
CAUTION: If you secure additional objects to the neoprene pouch it may sink.
WARNING: The ResQFix™ must be removed from its pouch when used in an emergency.
SECTION 6 –CARE AND MAINTENANCE
6.1 Routine Maintenance
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 in the US, or [phone] elsewhere. ACR technical
support can also be reached by sending an email to [e-mail].
After checking the beacon case for cracks, it may be wiped down with a clean, damp cloth. Do not use any
type of cleaner on your beacon.
Figure 7 - Flotation Pouch
NOTE: ACR recommends that once you have clipped your
beacon in place that you also secure the beacon with the
lanyard to your life jacket, backpack, etc. to ensure the unit will
not be lost if it should break out of the clip.

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6.2 Battery Replacement
The battery must be replaced by the date indicated on the beacon or every five (5) years. At each inspection,
check the time remaining until replacement is required. The battery should be replaced if the beacon has been
activated for any use other than the self test. Always refer all long life battery replacement and 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.
NOTE: There are no user serviceable items inside the beacon. DO NOT OPEN THE BEACON.
For the nearest location of a Battery Replacement Center, visit our website at www.acrelectronics.com
The beacon may or may not require special shipping instructions due to the lithium batteries and changes in
shipping regulations. Call ACR’s customer service department at [phone] ext. 2110 for proper
shipping instructions.
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 ResQFix™ and MicrOFix™ can also transmit a distress alert (acquired by the internal
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 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.
NOTE: 406 MHz beacons are required to have their registration updated every two years.
*The national authority is the governmental body responsible for beacon registration database administration
for the country for which the beacon is programmed.
Once the 406 MHz signal is relayed through the LEOSAR and/or GEOSAR network, SAR forces determine
which SAR group is closest. This group proceeds to the beacon using the 121.5 MHz homing frequency.
7.2 Satellite Detection
Beacons 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 beacons 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.
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.

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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 beacon 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 ResQFix™ and MicrOFix™ store 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, dramatically increasing the
effectiveness of the overall operation.
SECTION 8 –TECHNICAL INFORMATION
8.1 Characteristics
The ResQFix™ and MicrOFix™ are battery operated Personal Locator Beacons. The beacon case, with its
antenna, is waterproof, while semiconductor circuits are mounted within the case assembly which also
contains the battery power supply. Keypads with “self test” and “ON” buttons are installed on the case, along
with an internal beeper and three LEDs. The beacon contains a GPS receiver that will acquire your LAT/LON
located under the bottom of the front case.
The ResQFix™ and MicrOFix™ meet the requirements of Federal Communications Commission (FCC) Part
95 Subpart K; and European R&TTE Directive.
8.2 Applicable Documents
COSPAS - SARSAT C/S T.001
Specification for 406 MHz Distress Beacons
COSPAS - SARSAT C/S T.007
406 MHz Distress Beacon Type Approval Standard
ETSI 302 152-1
Technical Characteristics of 406 MHz Satellite PLBs
RTCM Paper 76-2002/SC110-STD
RTCM Recommended Standards for 406 MHz Satellite PLBs
Industry Canada RSS-287
Radio Standards Specification for EPIRBs, ELTs and PLBs
Canadian NSS-PLB 06
NSS Performance Standard fro 406 MHz PLB
Australia/New Zealand AS/NZS 4280.2
406 MHz Satellite Distress Beacons; Part 2: PLBs
NOTE: For all other type approval information, please visit our website at www.acrelectronics.com.
Figure 7- Satellite Coverage
Figure 8- GEOSAR Satellite Orbits
Figure 9 –GPS Satellite Orbits

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8.3 Specifications
406 MHz Transmitter
Frequency
406 MHz
Output Power
5 watts
Frequency Stability
±2 parts per billion/100ms
Digital Message:
Format
Long message/ Serialized1*
Message protocol
Standard Location
Duration
520 ms
Rate
400 bps
Encoding
Biphase L
Modulation
±1.1 radians peak
1* Beacons are shipped from ACR with a Serialized code but can be reprogrammed at a service center to
other coded formats including nationality of registration.
121.5 MHz Transmitter
Frequency:
121.5 MHz
Frequency Tolerance
±50 ppm
Output Power
50 mW PEP
Morse Code “P” ID
Every 50 seconds (approximately) (U.S. Protocol)
Modulation
Type
AM (3K20A3N)
Sweep Range
400 to 1200 Hz
Sweep Rate
3 Hz
Duty Cycle
37.5%
Morse P
AM (2K00A2A) (U.S. Protocol)
Antenna
Frequency
406 & 121.500 MHz
Polarization
Vertical
VSWR
Less than 1.5/1
General/Environmental
Minimum Battery Operating Life
+24 hours minimum @ -20°C to +55°C (-4°F to +131°F)
Battery Replacement Interval
5 years, after use in an emergency, or expired battery witness seal
*Batteries meet the UN Classification for Non-dangerous goods
Size of beacon less Antenna
1.25 x 5.81 x 2.31 in (3.71 x 14.75 x 5.8 cm)
Material
High impact and UV resistant plastic
Color
ACR-treuse™ (High Visibility Yellow)
Weight
9.8 oz (277 grams) w/o holster
Waterproof
Factory Tested to 3.28 ft (1 m) for 1 hour and to 32.8 ft (10 m) for
10 minutes, both at room temperature
Buoyancy
The beacon will not float without ACR pouch, included with the
ResQFix™ and not sold separately.
Temperature Range
Operating
-20°C to +55°C (-4°F to +131°F)
Storage:
-40°C to +70°C (-40°F to +158°F)

Y1-03-0228 Rev. B
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DECLARATION OF CONFORMITY
ACR Electronics hereby declares that the following products are in conformity with Directive
1999/5/EC of the European Parliament and of the Council of 9 March 1999 on Radio Equipment
and Telecommunications Terminal Equipment (R&TTE), and has been type examined as
described in this Declaration. In accordance with the Directive, the product will be marked with the
CE conformity marking as follows:
Product: Personal Locator Beacon (PLB) with GPS Receiver
Trade Names: ResQFix and MicrOFix
Model: PLB-300
Notified Body: QinetiQ (UK) Notified Body No. 0191
Cody Technology Park
Ively Road, Farnborough
Hampshire, GU14 0LX, United Kingdom
Certificate No. QQ-RTTE-02/07-01
Regulations and IEC EN 60945: 2002
Standards: ETSI EN 302 152-1: V1.1.1 (2003-11)
COSPAS - SARSAT C/S T.001 –Issue 3 - Revision 7
COSPAS - SARSAT C/S T.007 –Issue 4 - Revision 0
Manufacturer: ACR Electronics Inc. European ACR Electronics Inc.
5757 Ravenswood Road Representative: (European Office)
Fort Lauderdale, FL 33312 1 Rose Cottages, Pitmore Lane,
USA Sway, Lymington, Hampshire SO41
6BX UK
Signed on behalf of ACR Electronics Inc.
Signed: ________________________________________
Name: Kerry Greer Date: July 1, 2009
Title: Executive Director -
Research & Development
Document PLB-300-003 This Declaration complies with
ISO/IEC 17050-1:2004
ACR Electronics, Inc. is registered by UL to ISO 9001:2000