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CSEL Radio Set Adapter (RSA)

A survivor uses a Combat Survival Evader Locator (CSEL) AN/PRQ-7 Hand-held Radio to send a position signal to the Joint Search and Rescue Center to trigger extraction by a Navy SEAL team, during exercise Desert Rescue XI, Fallon Naval Air Station, NV, 6 August 2003
A survivor uses a Combat Survival Evader Locator (CSEL) AN/PRQ-7 Hand-held Radio to send a position signal to the Joint Search and Rescue Center to trigger extraction by a Navy SEAL team, during exercise Desert Rescue XI, Fallon Naval Air Station, NV, 6 August 2003.

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13 Dec 1941 Hungary and Bulgaria declare war on United States.
13 Dec 1944 American forces take the towns of Gey and Strass, bringing US troops to the Roer River, ending the intense phase of the battle of the Hürtgen Forest.
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Combat Survival Evader Locator (CSEL) Radio Set Adapter (RSA)

CSEL Radio Set Adapter (RSA) on the left is connected to the CSEL Planning Computer (CPC) on the right by a USB cable.  A reference AN/PRQ-7 Hand-held Radio is inserted into the left interface slot
CSEL Radio Set Adapter (RSA) on the left is connected to the CSEL Planning Computer (CPC) on the right by a USB cable. A reference AN/PRQ-7 Hand-held Radio is inserted into the left interface slot.

The CSEL Radio Set Adapter (RSA) (part number J-6431/PRQ-7) is described as the "Control, Radio Set Transfer" and is referred to as the Radio Set Adapter (RSA). It is a small suitcase of electronics with slots to insert the reference AN/PRQ-7 Hand-held Radio (HHR) and a target HHR to provide a physical interface between the HHR and other CSEL components. Its NSN is 5820-01-500-0556.

The RSA serves as:

  • The interface between the CSEL Planning Computer (CPC) and the reference HHR
  • The interfaces between the reference HHR and each target HHR
  • The interface to the AN/CYZ-10 Data Transfer Device for GPS Key Fill

One reference AN/PRQ-7 HHR is first filled with the mission parameters and the data is verified. Then data is transferred from the reference HHR to as many target HHRs that are going to be used during the operation, one HHR at a time. The reference HHR stays resident in the RSA, while the target HHRs are loaded one after another. The RSA performs such functions as commanded by the CPC, which include loading mission parameters and precision GPS time and interfacing the HHR to the AN/CYZ-10 GPS key fill device.

CSEL Planning Computer (CPC)

The CSEL Planning Computer (CPC) is a ruggedized laptop PC with Microsoft operating system and one Universal Serial Bus (USB) port available for connection to the RSA. The CPC hosts the CSEL application software and configuration files that allow an operator to load and download the HHR.

The CPC and RSA will be used to load a target HHR with mission specific data including communications frequencies and channels, waypoints, standardized messages, Unit Identification Codes (UIC), call signs, and passwords. The configuration will also provide post mission analysis. Since the CPC is used to load classified data, it requires a secure area for use and storage. The HHR is classified to the level of the waypoints entered, as these are the only items retrievable by an operator.

The procedure for loading the HHR involves obtaining a GPS fix on a HHR to be designated as the reference HHR. The CPC and GPS key fill device are connected to the RSA. The reference HHR and a target HHR are inserted into the RSA interface slots. The system operator must also enter mission and personal data into the CPC through the keyboard. It takes approximately eleven minutes to set up the CPC and load the first HHR. Each successive HHR takes approximately two to three minutes.

The RSA in its portable case weighs approximately 21 pounds. The RSA is portable, utilizes a standard Zero Halliburton case, and uses a universal 110-240V (50/60Hz AC) power supply. The RSA provides power to the HHR during loading.

The RSA includes a GPS antenna w/coupler, 100ft cable, power & USB cables.