RF Architectures Applying Photonic Timing and Routing (RAAPTR)

This document provides official Q&A clarifications for the Defense Advanced Research Projects Agency (DARPA) Radiofrequency Architectures Applying Photonic Timing and Routing (RAAPTR) program (DARPA-PS-26-126). Eligibility guidelines restrict Government laboratories, University Affiliated Research Centers (UARCs), and Federally Funded Research and Development Centers (FFRDCs) from acting as prime performers or subcontractors. Prime proposers must have requested and received the RAAPTR Controlled Unclassified Information (CUI) Addendum, which requires CUI-compliant computer systems. However, non-compliant entities may participate as subcontractors. Program scope and technical metrics focus on advanced optical oscillator technologies, excluding non-optical microwave generation. Proposers may choose fixed or tunable oscillator frequencies, provided they meet strict phase noise and environmental metrics, including maintaining functionality under specified vibration levels. Non-fundamental research is required, and certain ruggedized oscillator designs meeting environmental metrics are designated as CUI. The program structure consists of two phases, with Phase 1 focusing on architectural designs and Phase 2 shifting toward system-level demonstrations, such as optically enabled radar. Final testing will be coordinated and executed by a government-led team, culminating in airborne flight testing using government-furnished platforms, though performers may propose complementary test platforms.

The Defense Advanced Research Projects Agency (DARPA) Multi X Office (MXO) has issued Program Solicitation DARPA-PS-26-126 for the Radiofrequency Architectures Applying Photonic Timing and Routing (RAAPTR) program. This initiative solicits innovative proposals to develop radiofrequency (RF) system architectures that utilize optical timing backbones to generate and maintain low phase noise and timing precision, designed for ruggedized, compact mobile land, air, and space defense platforms. With an anticipated total program funding of $58 million, DARPA plans to award three to five Other Transaction (OT) for Prototype Agreements. The RAAPTR program is a two-phase, 42-month effort. Phase 1 (24 months) focuses on designing, fabricating, and laboratory-testing vibration-hardened photonic oscillators and ancillary analog-RF components. Phase 2 (18 months) centers on integrating these ruggedized components into a mature brassboard prototype for testing on an airborne platform under realistic environmental conditions. Key program deadlines include a required Abstract submission by July 13, 2026, and full Proposals due by August 24, 2026. Eligible proposers must possess a valid Cybersecurity Maturity Model Certification (CMMC) Level 2 (Self-Assessment) status and must have requested and received the Classified/Controlled Unclassified Information (CUI) Addendum to participate. The government requires a minimum of Government Purpose Rights (GPR) for developed data. Proposals will be evaluated based on scientific and technical merit, relevance to the DARPA mission, and budget realism.

This document is Attachment I (Schedule of Milestones and Payments) for the DARPA-PS-26-126 Resilient Anti-jam Airborne PNT Tactical Radio (RAAPTR) program. It outlines a 42-month agreement term structured around 15 distinct technical milestones, associated deliverables, and payment lines. The schedule requires performers to map tasks from their Task Description Document (TDD) and assign DARPA payment and performer share amounts to each milestone. The milestone phases progress from initial kickoff and baseline scheduling (Milestone 1) through design, procurement, and testing of un-packaged and packaged oscillator prototypes (Milestones 2–9). Later phases focus on brassboard prototype development, including Preliminary Design Review, Critical Design Review, environmental laboratory testing, and Test Readiness Review (Milestones 10–14). The final milestone (Milestone 15) culminates at month 42 with a strap-down flight test of the integrated brassboard prototype on a Government-furnished platform. Each milestone lists specific exit criteria, such as hardware characterization and vibration sensitivity testing, and deliverables, which primarily consist of presentations at Quarterly Program Reviews and physical prototype deliveries. Contract Line Item Numbers (CLIN 0001 through CLIN 0015) are designated for each milestone, with financial obligation details to be finalized at the time of award.

This document is Attachment H (Task Description Document) for the DARPA Resilient Architecture for Robust Physical Time Transfer and RF (RAAPTR) program (DARPA-PS-26-126). It serves as a customizable template for selected performers to outline their specific research and development plans, technical tasks, and program management strategies. The RAAPTR program aims to develop RF system architectures that leverage an optical timing backbone to generate low phase noise and timing deviation. These systems must be designed for compact, rugged mobile defense platforms. Key technical objectives include: * **Component-Level:** Developing photonic microwave oscillators with phase noise of <-120 dBc/Hz (at 100 Hz offset) and <-150 dBc/Hz (at 10 kHz offset), a relative timing error of <1 picosecond, and a volume of <300 cc. * **System-Level:** Maintaining oscillator performance within 3 dB across a full transceiver chain, developing digital signal processing architectures for mission transitions, and ensuring survivability under temperatures from -40 to 85 °C and 7.7 grms vibration. Performers must use this template to detail their project overview, define technical tasks and deliverables by phase, outline program management and risk mitigation strategies, and specify travel, meeting, and Government Furnished Information/Property (GFI/GFP) requirements.

This document is a sample template for an expenditure-based Other Transaction (OT) Agreement for prototypes (HR0011-XX-9-XXXX) between a performer and the Defense Advanced Research Projects Agency (DARPA), authorized under 10 U.S.C. § 4022. Its primary purpose is to establish the legal, financial, and administrative framework for collaborative research and development of a prototype. Key terms include: - **Management & Milestones:** The agreement is structured around an expenditure-based approach. Payments are tied to the successful completion and verification of defined milestones rather than a traditional cost-reimbursement schedule. - **Intellectual Property & Data Rights:** The performer generally retains title to subject inventions, while the government receives a nonexclusive, paid-up license and specific data rights. March-in rights are preserved for the government under specified conditions. - **Security & Safeguarding:** Performers must implement NIST SP 800-171 standards to protect Covered Defense Information (CDI) and rapidly report cyber incidents within 72 hours. - **Foreign Access & Sourcing:** Strict controls govern the transfer of developed technology to foreign entities. The agreement also prohibits procuring covered telecommunications and video surveillance equipment from designated foreign entities, in compliance with Section 889 of the FY 2019 NDAA. - **Reporting:** Regular technical and business status reports must be submitted electronically via the DARPA Vault system, and invoices must be processed through Wide Area Workflow (WAWF).

This document is a sample template for a streamlined Other Transaction (OT) agreement for prototypes valued at $2 million or under (Agreement No. HR0011-XX-9-XXXX). Formulated between the Defense Advanced Research Projects Agency (DARPA) and a nontraditional defense contractor, the fixed-price agreement operates on a milestone-payment structure without requiring resource contributions from the performer. The agreement outlines terms across sixteen articles and eight attachments, detailing project management, milestone-based invoicing via the Wide Area Work Flow (WAWF) system, and dispute resolution. It establishes terms for intellectual property, granting the performer primary patent rights while securing nonexclusive, royalty-free licenses and march-in rights for the government. Data rights, security guidelines, and foreign access controls to technology are defined to protect national security interests. Additionally, the document enforces strict compliance regarding cybersecurity standards under NIST SP 800-171, rapid cyber incident reporting within 72 hours, and prior-approval requirements for public information releases. It prohibits procuring banned telecommunications and video surveillance equipment from covered foreign entities. Performers must submit progress documentation, a data management plan, and a final report through the DARPA Vault system, alongside annual utilization reports on subject inventions via i-Edison. This streamlined framework serves as a model to facilitate agile, rapid prototype development for national defense.

This document is a sample federal agreement template for an "Other Transaction for Prototypes" (OT) under 10 U.S.C. § 4022. It establishes a fixed-support contract structure between the Defense Advanced Research Projects Agency (DARPA) and a traditional defense performer, requiring a one-third cost-share from the performer to develop a prototype. The agreement details the administrative, financial, and legal frameworks governing the research and development program. Key elements include a milestone-based payment structure processed through the Wide Area Workflow (WAWF) system and annual program plan reviews. It defines intellectual property allocations, granting the performer principal patent rights while securing non-exclusive, paid-up licenses and march-in rights for the government. Data rights are similarly structured, with specified provisions for government purpose or unlimited rights. To protect national security, the template outlines strict guidelines for foreign access to technology, including a 60-day notification period for transfers. It mandates compliance with NIST SP 800-171 to safeguard Covered Defense Information (CDI) and requires cyber incidents to be reported within 72 hours. Additionally, it prohibits the use of covered telecommunications and video surveillance equipment from specified foreign entities and outlines rules for property disposition, public information release, and potential follow-on production contracts. Highly structured, the document contains template articles alongside placeholders for task descriptions, payment schedules, and reporting requirements via the DARPA VAULT system.

This document is a sample Other Transaction for Prototypes agreement (Agreement No. HR0011-XX-9-XXXX) between the Defense Advanced Research Projects Agency (DARPA) and a nontraditional defense performer. Established under the authority of 10 U.S.C. § 4022, this model agreement outlines a fixed-support, milestone-based payment structure without resource contributions from the performer to develop a specific technology prototype. The agreement details the administrative roles, program management guidelines, and modification protocols overseen by the Agreements Officer (AO) and the Agreements Officer’s Representative (AOR). Payments are tied directly to the successful completion and verification of deliverables detailed in the Schedule of Milestones and Payments, processed electronically through the Wide Area Workflow (WAWF) system. Key legal and operational provisions include: - **Intellectual Property and Data Rights:** Establishes the allocation of patent rights, government purpose rights, and march-in rights. - **Foreign Access & Technology Security:** Imposes strict controls on transferring developed technology to foreign firms and mandates compliance with export regulations. - **Cybersecurity:** Requires the protection of Covered Defense Information (CDI) in compliance with NIST SP 800-171 and dictates rapid 72-hour cyber incident reporting. - **Telecommunications Restrictions:** Prohibits the procurement of equipment or services from specified foreign entities under Section 889 of the FY 2019 NDAA. - **Follow-On Production:** Permits the future non-competitive award of follow-on production contracts upon successful prototype completion. The appendices govern task descriptions, mandatory data management plans, and reporting schedules via the DARPA Vault portal.

This document is a sample federal model agreement for an expenditure-based "Other Transaction for Prototypes" (OT) under 10 U.S.C. § 4022. Entered into between the Defense Advanced Research Projects Agency (DARPA) and a performing organization, the agreement establishes a cost-sharing framework (typically a 1/3 performer contribution) to execute research and development for a prototype. The agreement is structured around eighteen articles and seven attachments. It outlines project management processes, including the requirement for an Annual Program Plan, and specifies administrative points of contact. Payments are tied to the successful completion and verification of predetermined milestones, which performers must invoice electronically through the Wide Area Workflow (WAWF) system. Key legal and regulatory provisions are detailed, including: - Patent and Data Rights: Allocation of principal invention rights, government purpose rights, and march-in rights. - Foreign Access: Strict controls on transferring developed technology to foreign entities. - Cybersecurity: Mandated compliance with NIST SP 800-171 and a 72-hour rapid reporting requirement for cyber incidents involving Covered Defense Information (CDI). - Follow-on Production: Authorization for potential non-competitive follow-on production contracts or OTs upon successful prototype completion. - Prohibitions: Strict bans on utilizing covered telecommunications and video surveillance equipment from specified foreign entities. Additionally, the document mandates technical and business status reporting via the DARPA Vault portal to ensure transparency and accountability.

This document is a Question and Answer (Q&A) guide, Version 3, for the DARPA Radiofrequency Architectures Applying Photonic Timing and Routing (RAAPTR) program (DARPA-PS-26-126). It clarifies solicitation requirements across key areas including eligibility, program scope, classification, metrics, and contract administration. Regarding eligibility, Government laboratories, FFRDCs, and UARCs cannot perform on the program, though individuals with multiple affiliations may propose under an eligible CAGE code. To lead a proposal as a prime, entities must request and receive the RAAPTR Controlled Unclassified Information (CUI) Addendum, which requires CUI-compliant computer systems or approved physical/classified delivery channels. Primes may share this addendum with qualified subcontractors who meet NIST SP800-171 standards. The program's scope targets optical and photonic-based oscillators, excluding non-optical microwave generation. While oscillators are not required to be tunable, they must function under specified environmental vibration metrics. Proposals must identify clear use cases; however, technology transition paths are optional but favorable. Furthermore, non-fundamental research is required, as ruggedized designs meeting environmental metrics are classified as CUI. Lastly, the document clarifies that DARPA will utilize milestone-based contracts rather than expenditure-based contracts. While the Government team (including NIST and JPL) will coordinate and execute the final flight testing, proposers must include costs to deliver hardware prototypes and may propose complementary testing platforms. Weaker proposals lacking a plausible path to meet established metrics will be evaluated strictly against the solicitation's criteria.

This document is a Question and Answer (Q&A) clarification guide (Version 2) for the DARPA Radiofrequency Architectures Applying Photonic Timing and Routing (RAAPTR) solicitation (DARPA-PS-26-126). It outlines eligibility, scope, classification, metrics, and testing requirements for potential performers. Government labs, FFRDCs, and UARCs are excluded from performing, though FFRDC-affiliated faculty may participate under an eligible CAGE code. To lead a proposal as a prime contractor, entities must request and receive the Controlled Unclassified Information (CUI) Addendum, which requires CUI-compliant computer systems or approved classified channels. Primes may share this addendum with qualified subcontractors who meet NIST SP800-171 requirements. Technically, the program seeks optical or photonic-based oscillators (excluding non-optical microwave generation) that can meet strict timing and environmental metrics under operational vibration. While oscillator frequency tuning is optional, proposals must define clear military or commercial use cases. Non-fundamental research is required, and ruggedized oscillators meeting environmental metrics will be designated as CUI. DARPA anticipates utilizing exclusively milestone-based contracts for the two-phase program. Performers will deliver hardware prototypes for a government-coordinated final test event, which will include airborne flight testing defined during Phase 1. The government team currently includes NIST and JPL, with opportunities still open for other government entities.

This document is the Controlled Unclassified Information (CUI) Materials Request Form (Attachment A) for DARPA-PS-26-126, specifically for the RAAPTR program. It outlines the requirements and procedures for interested parties to request and receive sensitive RAAPTR CUI materials electronically via DoD SAFE. To qualify for electronic delivery, prime proposers must submit the request form by July 6, 2026, at 5:00 p.m. ET. Additionally, they must possess a National Institute of Standards and Technology (NIST) SP 800-171 DoD Assessment Score between 88 and 110, completed within the last three years. DARPA will verify these scores using the Supplier Performance Risk System (SPRS). Proposers failing to meet these scoring or recency requirements will be ineligible to receive the files electronically. Prime contractors are also responsible for ensuring their subcontractors can properly handle CUI. The attached form collects essential organization details, including Unique Entity Identifier (UEI), CAGE code, company address, self-assessment date, and contact information for the point of contact receiving the secure file drop-off.

This document provides instructions and the template for Volume II: Price Volume for the DARPA-PS-26-126 RAAPTR solicitation. Proposers must address the full program across both Phase 1 and Phase 2, utilizing this template alongside the required Attachment F: DARPA Price Summary Spreadsheet. Submission formats are restricted to PDF or Microsoft Word, while the accompanying spreadsheet must remain in an editable format with intact formulas to ensure traceability. The Price Volume must align with the Task Description Document (TDD) and establish consistent task structures. The prime contractor is responsible for compiling all subcontractor and consultant proposals, though proprietary sub-awardee pricing can be submitted directly to DARPA via email. Proposers must detail and justify costs across eleven designated sections: Direct Labor, Indirect Costs, Materials, Equipment Purchases, Travel, Other Direct Costs (ODCs), Cost Sharing, Consultant Costs, Subawardee Costs, Rate Agreements, and a Value Assessment. Any material or equipment item exceeding $10,000 requires supporting backup documentation, such as quotes or catalog price lists. Additionally, the Value Assessment section tasks proposers with demonstrating the financial and operational return on investment achieved by utilizing an Other Transactions (OT) agreement, focusing on benefits like cost avoidance, administrative burden reduction, and commercialization potential.

This document is the Controlled Unclassified Information (CUI) Guide for the DARPA Radio Frequency Architectures Applying Photonic Timing and Routing (RAAPTR) program. The RAAPTR program develops next-generation, high-precision timing for radar and other Radio Frequency (RF) systems by integrating advanced optical and electronic technologies with vibration-resistant packaging. The guide establishes the authority, policy, and procedures for identifying, marking, and protecting sensitive but unclassified information associated with the program. Managed by DARPA’s MXO office, RAAPTR information must be protected and stored in accordance with DoDI 5200.48 and DFARS 252.204-7012 (NIST 800-171). The guide identifies five primary CUI categories applicable to the program: * **Export Control and Export Controlled Research:** Covers technology and research governed by ITAR and EAR, restricted to Distribution Statement C. * **Proprietary Business Information (PROPIN):** Protects proprietary contractor data, limited to federal employees and contractors (FEDCON). * **Controlled Technical Information (CTI):** Covers military-use RF system architectures and performance parameters, restricted using Distribution Statements B through F. * **Operations Security (OPSEC):** Safeguards aggregated program documents, technical specs, and pre-decisional testing goals under FEDCON dissemination. Conversely, individual internal hardware device designs that do not reveal the complete photonic oscillator or analog-RF designs are designated as fundamental research and remain unclassified. Public disclosures must go through the DARPA DISTAR process, while security incidents or data breaches must be reported immediately to the program security officer and the DARPA contracting officer.

This DARPA Proposers Day presentation introduces the Radiofrequency Architectures Applying Photonic Timing and Routing (RAAPTR) program, managed by Dr. Justin Cohen. Building on the GRYPHON program (2022–2025), RAAPTR aims to transition chip-scale photonic oscillators from laboratory successes to rugged, high-performance defense applications. The program's primary objective is to redesign RF system architectures to maintain low phase noise and timing stability under harsh environmental conditions, such as airborne vibrations, without degrading performance downstream. To achieve this, RAAPTR establishes strict performance metrics, including a phase noise target of -120 dBc/Hz at 100 Hz, a 1 ps timing deviation, and a maximum 3 dB phase noise and timing budget across the RF analog system. RAAPTR is structured as a 36-month program with key milestones culminating in laboratory environmental testing and a flight demonstration of an integrated brass-board system on a government-furnished platform. Successful performer teams must possess multidisciplinary expertise spanning chip-scale photonics, analog/digital RF system design, packaging, and defense platform integration. DARPA intends to award approximately $58 million in total program funding through Other Transaction Awards to three to five selected performers. Proposers are tasked with identifying specific defense use cases and host platforms to guide their RF architecture designs.

The DARPA Broad Agency Announcement Tool (BAAT) Submission Portal Guide provides instructions for first-time and returning users navigating the BAAT portal to submit proposals, executive summaries, and proposal abstracts. To use the system, submitters must first register an account at the BAAT website. This process triggers activation emails via Okta to set up multi-factor authentication. Upon initial login, users must register their organization by providing contact details and, eventually, identification numbers such as CAGE codes, UEI numbers, and Taxpayer IDs. To submit a proposal, users select an open announcement, filter by DARPA Technical Office if needed, and fill out the submission form. Required information includes proposal details, technical points of contact, authorized representatives, and subcontractor/team member details. Additionally, a technical summary of up to 500 words may be required, and all final documents must be uploaded as an unencrypted .zip or .zipx file before clicking "Finalize." Key best practices and system constraints include: * **Inactivity Rules:** Accounts are disabled after 30 days of inactivity and deleted after 90 days. * **Session Expiry:** Keystrokes do not count as active navigation. Users must periodically click the page or "Refresh Session" to avoid losing progress. * **Support and Edits:** Technical support is available Monday through Friday, 9:00 a.m. to 5:00 p.m. ET at BAAT_Support@darpa.mil. Users must contact support to unfinalize and edit a submission before the deadline; no changes are permitted after the deadline passes.

This document is a template for an Other Transaction (OT) Agreement for Prototypes, issued by the Defense Advanced Research Projects Agency (DARPA) under the authority of 10 U.S.C. § 4022. The agreement establishes a collaborative, milestone-based research and development partnership between DARPA and a designated performer to design and construct a specific technological prototype. Key administrative and operational provisions include: - **Management and Modifications:** The performer holds primary technical management responsibility, guided by a mutually developed Annual Program Plan, with oversight and milestone verification conducted by DARPA's Agreements Officer's Representative (AOR) and Program Manager (PM). - **Obligation and Payment:** Payments are fixed-price disbursements tied to the successful completion of specific milestones, managed electronically through the Wide Area Workflow (WAWF) system. - **Intellectual Property and Data Rights:** The performer generally retains patent rights to subject inventions, subject to a nonexclusive, paid-up license for the U.S. government and potential government "march-in" rights. Data rights allocations and technology transfer to foreign entities are strictly regulated to protect national security. - **Security and Cyber Safeguards:** Performers must implement cybersecurity standards (NIST SP 800-171) to protect Covered Defense Information (CDI) and rapidly report cyber incidents within 72 hours. - **Follow-On Production:** Successful completion of the prototype agreement qualifies the performer for potential follow-on production contracts or transactions without further competition. Associated attachments define the technical tasks, reporting schedules, payment milestones, property inventories, and data management plans.

This document is Attachment G (Other Transaction Certifications) for DARPA Program Solicitation No. DARPA-PS-26-126, proposal identification "RAAPTR." It requires offerors to complete and submit several legal and regulatory certifications to qualify for an Other Transaction (OT) agreement. Key certifications and representations include: - **General Certifications:** Verifying the organization and its principals are not debarred or suspended, will maintain a drug-free workplace, and comply with non-discrimination laws. - **Lobbying Restrictions:** Certifying that no federal funds will be used to influence government officials for awards exceeding $100,000. - **Tax and Felony Representations:** Disclosing whether the corporation has unpaid federal tax liabilities or felony convictions within the preceding 24 months. - **Confidentiality Agreements:** Representing that the entity does not restrict employees or subcontractors from reporting waste, fraud, or abuse to federal authorities. - **Telecommunications Equipment:** Disclosing whether the offeror will provide or use covered telecommunications and video surveillance equipment or services from prohibited Chinese entities. - **Other Transactions for Prototypes Requirements:** Indicating if team members qualify as non-traditional defense contractors, nonprofit research institutions, or small businesses, and confirming if the offeror is contributing at least a one-third cost share. The document must be signed and dated by an authorized official to certify the accuracy of the provided information.

This document is the Price Summary Spreadsheet template for DARPA-PA-25-01, a federal solicitation requiring detailed cost proposals from prime contractors and subcontractors. The spreadsheet is structured to capture comprehensive pricing across two primary program phases: Phase 1, spanning 24 months with nine associated milestones, and Phase 2, spanning 18 months with six associated milestones. Proposers must detail fully burdened hourly direct labor rates and hours per milestone, along with itemized subcontractor and consultant costs. Additionally, the template includes dedicated worksheets to break down non-labor expenses, including Materials/Supplies, Equipment, Travel, and Other Direct Costs (ODCs). Proposers must provide supporting documentation, such as vendor quotes, quantities, unit prices, and task alignments, for these categories. The travel section outlines strict compliance guidelines, including the use of federal GSA per diem rates, 75% M&IE limits for first and last travel days, and requirements for economy airfare backups. The spreadsheet automatically calculates total proposed amounts, government funding shares, and performer cost-share contributions. Marked as "Competition Sensitive Information," this template ensures standard cost realism and federal cost principle compliance (e.g., FAR/DFARS) during DARPA's source selection process.

This document is the mandatory Volume I: Technical and Management Proposal Template for DARPA-PS-26-126, the Resilient Advanced Analog-Photonic Transmitter-Receiver (RAAPTR) program. It outlines the preparation and submission instructions for proposers seeking an Other Transaction for Prototype agreement. Proposals must consist of a 20-page maximum written technical and management volume, alongside a 30-slide, 30-minute oral presentation and a 45-minute interactive Q&A session. The written volume must detail the proposer's specific use case, analog architecture, photonic oscillator approach, key deliverables, and management plans. It also requires an official transmittal letter, executive summary, task description document (TDD) categorized by fundamental research or controlled unclassified information (CUI), detailed schedules, and organizational conflict of interest (OCI) disclosures. Additionally, proposers must identify key personnel and their commitment levels, specify organizational capabilities, and declare any intellectual property (IP) or patent restrictions, with the understanding that the government requires Government Purpose Rights (GPR) for developed technology. Submissions must be written in English, formatted for 8.5 by 11-inch paper with 1-inch margins and at least 12-point font, and submitted via the Broad Agency Announcement Tool (BAAT).

This document is a Proposal Summary Slide Template for the Defense Advanced Research Projects Agency (DARPA) Program Solicitation DARPA-PS-26-126, titled "RAAPTR." The template serves as a standardized format for proposers to present their project concept, technical approach, and team composition to evaluation officers. The template requires applicants to provide key administrative and technical details, including the full proposal title, participating organization names, and the technical point of contact. To explain the proposed solution, the template outlines specific sections for a concept graphic, a description of the proposed use case and host platform, and a detailed technical approach. Additionally, proposers must outline their team structure and define the specific roles each member will play in successfully executing the technical approach. The document is marked as containing competition-sensitive information, requiring agreements officer authorization for distribution.

This document is Attachment B of the Defense Advanced Research Projects Agency (DARPA) Program Solicitation DARPA-PS-26-126, which outlines instructions and templates for submitting abstracts for the RAAPTR program. Submission of this abstract is mandatory and is a prerequisite for submitting a full proposal. DARPA will evaluate conforming abstracts to recommend or discourage full proposal submissions, though proposers may still submit a full proposal regardless of the feedback. The abstract must be submitted via the Broad Agency Announcement Tool (BAAT) in PDF or Microsoft Word format, written in English, and limited to a maximum of seven pages (excluding the cover sheet, table of contents, bibliography, and up to three optional technical papers). The required abstract structure consists of: 1. **Cover Sheet:** Captures administrative details, CAGE code, points of contact, and estimated pricing. 2. **Use Case:** Explains how the proposal advances RAAPTR goals, outlining the target application, host platform, and requirements. 3. **Architecture Approach:** Details planned analog hardware development or procurement and any digital algorithm scope. 4. **Photonics Approach:** Explains the microwave generation method, photonic oscillator development status, and planned optical components. 5. **Program Deliverables:** Describes the format of deliverables, including the oscillator, breadboard, and brassboard prototypes. 6. **Team Structure and Proposer Capabilities:** Highlights the team's qualifications, past experiences, and transition capabilities. 7. **Bibliography:** Lists citations and references.