RADIOS SURVIVAL  ( PERSONAL LOCATOR BEACONS )
Survival Radios can not be soled to individuals without prior permission and not before the concerned authorities approved the End User declaration . Likewise organizations need to provide End User declaration from  their Government or customer once they decided to order such items.  Customers with already rejected DST-5 applications should not attempt a second application through us.
                          PRC-112D  Personal Locator Beacon


The AN/PRC-112 survival radio provides Army Search and Rescue (SAR) personnel with the capability to perform combat search and rescue (CSAR) missions of downed aircrew personnel. The Survival Radio is critical to minimizing the exposure of not only downed aircrew personnel but also the personnel and equipment of forces conducting the CSAR.

The AN/PRC-112 radio is a multi-mission transceiver used in conjunction with the AN/ARS-6 Personnel Locator Radio Set, and the KY-913 Program Loader to make up the Army Personnel Location System (PLS). The AN/PRC-112 acts as a transponder, supplying ranging and personnel identification to the AN/ARS-6 system. Additionally, it performs beacon and air-to-ground voice functions. A user's location can be accurately determined when used in combination with an interrogator equipped aircraft for rescue/extraction.

The unit can be stowed onLPU- 17/P, LPU-18/P, LPU-20/P Life Preservers ,SRU-21/P  and CMU-33/PSurvival Vests .

The AN/PRC-112 radio is a multi-mission transceiver used in conjunction with the AN/ARS-6 Personnel Locator Radio Set, and the KY-913 Program Loader to make up the Army Personnel Location System (PLS). The AN/PRC-112 acts as a transponder, supplying ranging and personnel identification to the AN/ARS-6 system. Additionally, it performs beacon and air-to-ground voice functions. A user's location can be accurately determined when used in combination with an interrogator equipped aircraft for rescue/extraction.

The AN/PRC-112 currently contains 11 internal modules, of which three critical modules can no longer be manufactured. Due to the obsolescence of these critical modules CECOM has obtained funding to enable a redesign effort to upgrade the radio to state of the art technology. As part of this effort, the radio will incorporate acceptance capability for any power source (including rechargeable/commercial batteries), reduce power consumption, and incorporate indicators for low power and operational status. There are also options built into the contract, to include a Global Positioning Satellite (GPS) tagger capability, a Search and Rescue Satellite Aided Tracking (SARSAT) capability and over the horizon capability.

The AN/PRC-112D Survival Radio provides the most cost effective way of dealing with growing obsolescence, while adopting the most reliable and advanced solution available and reducing total cost of ownership. This state-of-the-art upgrade with programmable software results in reduced logistics costs, increased product reliability, and increases mission readiness.

Operation modes:
Frequency Range: 121.5 MHz

225 MHz to 299.975 MHz
Available channels: 3000 in 25 kHz steps
Frequency stability: + 5ppm
Modulation modes: AM voice

AM swept-tone beacon:121.5 MHz and 243 MHz

DME transpond: any UHF channel
Voice Channel

Swept-tone beacon: 121.5 MHz and 243 MHz

DME transpond: any UHF channel
Dimensions: 7.69 in. high x 3 in. wide x 1.5 in. deep
Weight: 28 ounces with battery
Volume: 28 cubic inches
Ancillary Equipment: Rechargeable batteries (upgraded version)

Non-rechargeable batteries

External Power Adapter
Maintenance Concept: Repair at AVUM is limited to replacement of nonrepairable items such as batteries, knobs, earphone, antenna, pins and textile bag.

All other repairs are done by the Depot including replacement of nonrepairable modules and assemblies.
                                    PRC-112 Program Loader


The AN/PRC-112 survival radio provides Army Search and Rescue (SAR) personnel with the capability to perform combat search and rescue (CSAR) missions of downed aircrew personnel. The Survival Radio is critical to minimizing the exposure of not only downed aircrew personnel but also the personnel and equipment of forces conducting the CSAR.

The AN/PRC-112 radio is a multi-mission transceiver used in conjunction with the AN/ARS-6 Personnel Locator Radio Set, and the KY-913 Program Loader to make up the Army Personnel Location System (PLS). The AN/PRC-112 acts as a transponder, supplying ranging and personnel identification to the AN/ARS-6 system. Additionally, it performs beacon and air-to-ground voice functions. A user's location can be accurately determined when used in combination with an interrogator equipped aircraft for rescue/extraction .

  PRC-112 Program Loader
PRC-434GC

Performance

Frequency Range

225-299.975 MHz  + 121.5MHz

Number of Channels

3000 in 25 kHz steps

Programmable UHF Channels

10 + 1 guard

Non-programmable VHF Channel  

1 guard (121.5 MHz)

Navigation

40 programmable waypoints

Position Accuracy

GPS – C/A Code/25m

Modulation Type 

· AM (Voice or Swept Tone)

· FSK (narrow band data)

· OOK, PSK for ASARS (transponder)

Activation 

· Manual by survivor

· Automatic by g-switch, magnetic lanyard, water sensor

Remote Activation

· Beacon mode activation

· Range and direction interrogation activation

· GPS Lat./Long. interrogation

· Navigation mode activation

· Data transfer mode activation

Transmit Power Output    

· ~1W in UHF frequencies

· .1W at 121.5 MHz

Battery Type

LiMnO­

Battery Life

>30 hrs. @ 1:10 T/R ratio

Battery Life Monitor

“Fuel-Gage” circuitry in battery pack

Water-tightness  

Withstands 10m water depth immersion

Size (battery & antenna included) 

154mm x 85mm x 45mm (6” x 3.35” x 1.77”) H x W x D

Weight  

<850 gr.

Operating Temperatures  

–30°C to +55°C

Cospas/Sarsat Geolocation

Transmission of Cospas-Sarsat protocol (406 MHz)

PRC-90-2  SAR BEACON
                                                      PRC-90-2  PLB

This is a survival radio that is carried in the emergency vest of air crew members. It can transmit a beacon (attention getting warble tone) on 243.0 MHz.  Voice on 243.0 or 282.8 MHz and Morse Code in Modulated Continuos Wave (MCW) mode on 243.0.  It will receive voice on 243.0 and 282.8 MHz.  The previous frequencies are for Military emergency communications.  The PRC-90 does not work on the civilian emergency frequency of 121.5 MHz nor does it work on the international distress frequency of 406.025 MHz.


The unit can be stowed onLPU- 17/P, LPU-18/P, LPU-20/P Life Preservers ,SRU-21/P  and CMU-33/PSurvival Vests .

Note: Aircraft radios use AM so that when two transmissions double both transmissions are heard.  This is unlike FM where if one station is stronger than the other (by about 3 dB) the capture effect eliminates the weaker signal and it is not heard.  Since an AM receive will not have an audible output when a pure CW signal is being received, a Modulated CW signal is used and the AM receiver outputs the modulation frequency.

The AN/PRC-90 radio set is a dual channel transmitter/receiver capable of transmitting
 up to 60 nm (line of sight, depending on receiving aircraft's altitude).  It operates on guard (243.0) or SAR primary operating frequency (282.8) with a mode for swept tone signal on 243.0 only.  Transmission of beacon or code can be up to 70 nm.  Average battery life is about 14 hours.Radio is equipped with external earphone jacks to assist pilot in hearing radio transmission with helmet on."

We have few units available for sale with new MIL batteries .
SARBE 7  PLB
SARBE 7 PLB

When activated by the release cord, the SARBE 7 PLB transmits on
121.5 and 243 MHz a beacon signal (no voice capability )


The unit can be stowed onLPU- 17/P, LPU-18/P, LPU-20/P
Life Preservers ,SRU-21/P  and CMU-33/PSurvival Vests .


Transmissions on these frequencies will be detected by military aircraft
operating within line of sight of the PLB
(assuming the aircraft have TR+G selected).

In particular, SAR helicopters are able tohome on SARBE 7
transmissions. Furthermore, under European and ICAO guidelines,
civilian commercial aircraft are obliged to monitor 121.5 MHz.
In addition to airborne monitoring, the Distress and Diversion (D&D)
Cells at Prestwick and Swanwick employ a total of 21 terrestrial
receiver sites throughout Scotland, England and Wales to
auto-triangulate on transmissions receivedon both 121.5 and
243 MHz.

Although these receivers are mainly for aircraft in flight,
transmissions from PLBs at ground level in the receiver sites’ vicinity
maybe detected directly. Many airfields also monitor these
aeronautical distress frequencies.
( we have only few units available for sale )
URT-44  PLB

The   AN/URT-44   PLB  integrates   the   capabilities   of   the  

AN/URT-33,  which  transmitted  the  older  style  emergency 

location beacon at 243 MHz, along with new features which

added  the  ability  to  transmit  a  second  homing  signal  at 

121.5 MHz and the newer digital formatted distress message

at    406.037    MHz    frequency    to    the    Cospas-Sarsat

transponder    equipped    satellites.    This    digital    message   

includes  GPS geolocation  with  an  accuracy  better  than  26 

meters  (82  feet),  thus  greatly  improving  personnel  location 

reliability, speed of rescue and level of confidence.

 

The  121.5  and  243 MHz  transmissions  of  the  AN/URT-44 

provide  approaching  SAR  forces  with  a  beacon  for  their 

direction  finding  equipment.  The  primary  advantage  of  a 

406.037 MHz  beacon  over  a  121.5  and  243 MHz  beacon, 

when  used  in  conjunction  with  the  Cospas-Sarsat  satellite 

system,  is  to  provide  initial  SAR  forces  with  the  transmitter 

location.  Thus,  the  beacon’s  location  is  computed  by  the 

Cospas-Sarsat  system  based  on  the  Doppler  shift  between 

the 406.037 MHz beacon and the satellite orbital motion or

the embedded GPS position when  acquired by the beacon.

 

The  AN/URT-44  uses  an  enhanced  multi-moded  waveform 

compatible  with  STANAG  7007,  which  facilitates  location 

and  detection  during  search  and  rescue  operations.  The 

device was qualified by Cospas-S arsat authorities for military

use at Class 2 standard