Attachment E - Government Furnished Property.pdf

ATTACHMENT E

GOVERNMENT FURNISHED PROPERTY

APRIL 28, 2026

RFP NUMBER: 80GSFC26R0011

CONTRACT NUMBER: TBD

This document has been reviewed and determined not to contain export-controlled technical information.

Table of Contents Introduction EMI/EMC Considerations Electra UHF Transceiver Description Deliverables and Schedule

Introduction

NASA has identified the need for establishing a robust Mars relay infrastructure to provide mission-enabling and enhancing telecommunications and navigation services to future exploration elements. To this end, NASA has developed the Electra UHF Transceiver (EUT).

The EUT is shown in Figure 1. Redundant EUTs were flown for the first time on the 2005 Mars Reconnaissance Orbiter (MRO) mission. A single-string Electra has since been launched onboard the 2013 Mars Atmosphere and Volatile Evolution Mission (MAVEN), and a dual-string version has been launched on the 2016 European Space Agency ExoMars/Trace Gas Orbiter. In addition, transceivers compatible with the EUT have flown on Phoenix, MSL, Insight, and Mars 2020. In recent years, the EUT has been upgraded to both address obsolete parts and add additional capabilities.

Figure 1: Electra UHF Transceiver

As a continuation of this strategy, NASA is providing two Flight Model (FM) units of the EUT radio for use on the 2028 Mars Telecommunications Network (MTN) Orbiter. These upgraded units are currently in the final stages of assembly and test. The transceiver and ground support will be provided by NASA. However, the Contractor is responsible for any and all costs associated with integrating the transceiver into the overall flight system, and for implementing the functional capability within the project mission operation system/ground data system required to operate the transceiver. Deliverables to the selected MTN Contractor will consist of two EUT FM units and a single baseband-only prototype with flight-like digital interfaces. For higher-fidelity compatibility testing an Engineering Model (EM) EUT will be provided to the selected MTN provider for test and return. Additionally, to support integration and testing of the EM and/or FM units with the larger flight system, a set of Ground Support Equipment (GSE) capable of serving as UHF relay partner will be provided to the selected MTN provider for test and return.

This document provides a high-level description of the Electra interfaces to assist the Contractor in incorporating the Electra into their orbiter design. The final section provides additional details on the deliverables and their availability schedule.

EMI/EMC Considerations

Due to the relatively low frequencies and typically broad UHF antenna patterns, Electromagnetic Interference (EMI) and Electromagnetic Compatibility (EMC) issues should be carefully considered in accommodation of the Electra on a Mars orbiter. Just as spacecraft subsystems and payloads must be designed and implemented to avoid generation of EMI that would degrade communications on the deep space link to/from Earth, a Mars orbiter carrying the Electra must also ensure mitigation of any EMI that would degrade Electra relay communications at UHF frequencies.

As a reference, Figure 2 shows the EMI levels that Electra can tolerate without degradation across the UHF band. Any interference that couples into the UHF antenna and exceeds these levels into the Electra antenna port may increase receiver error rates or even cause a false carrier lock. Notches are included for the four most common return link channels

Early attention to EMI/EMC considerations in component and spacecraft design, and thorough component-level and system-level EMI/EMC testing, are key to achieving electromagnetic compatibility.

Frequency Range EMI Threshold (dBm) at EUT Antenna Port

360-370 MHz -88 370-375 MHz -103 375-389 MHz -118

389-390.9 MHz -133 390.9-391.1 MHz -138 391.1-391.9 MHz -133 391.9-392.1 MHz -138 391.2-394 MHz -133 394-396 MHz -128 396-398 MHz -118

398-399.585625 MHz -128 399.585625-401.485625 MHz -133 401.485625-401.685625 MHz -138

401.685625-404.3 MHz -133 404.3-404.5 MHz -138 404.5-406.4 MHz -133 406.4-420 MHz -118 420-430 MHz -88

Figure 2: EUT EMI Thresholds

Table 5 Government Furnished Property (GFP) for MTN

Description Part number

Manufacturer Qty Unit Acquisition Cost

Available Date

Return Date Provided As Is (Yes or

No) EUT FM Radio E699695-

L3Harris/JPL 1 $4.028M Mar 2027 May be consumed No

EUT FM Radio E699695-

L3Harris/JPL 1 $2.171M Mar 2027 May be consumed

No

EUT PM

Baseband Radio

180137 JPL 1 $0.250M Oct 2026 May be consumed

No

EUT EM Radio E699695-

L3Harris/JPL 1 $2.000M Oct 2026 – Dec 2028*

2 Months After Delivery

No

UHF relay partner EGSE

JPL 1 $1.000M With

EM/FM

Deliveries

2 Months After Delivery

No

An EUT Interface Control Document (ICD) and Command & Telemetry Dictionary will be provided at the Authorization to Proceed (ATP).

Each EUT FM unit will be delivered with an End Item Data Package documenting all transceiver level test results. For the EUT, these include functional, environmental, and Proximity-1 protocol testing. JPL and the Contractor will jointly coordinate transportation of the GFP, and JPL will perform post-delivery testing at the integration facility to verify the unit(s) health prior to integration.

*The EUT EM will be made available for at least a two-month period, as desired by the Contractor for higher-fidelity compatibility testing. The UHF relay partner EGSE will be made available for the EUT EM testing and for at least two months following the EUT FM unit(s) delivery. Additional durations of loaned equipment requested by the Contractor will be determined by the Government based on the Contractor’s schedule and Agency priorities.