# Tactical Jamming Systems (TJS) Follow-On Development

**R-2A activity** of project 0556 — EW Counter Response  
**Program element:** 0604270N — Electronic Warfare (EW) Dev  
**Component:** U.S. Navy · **Budget Activity:** 5  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0604270N/0556/a2  
**Parent:** https://hitchintel.com/programs/0604270N/0556

## Summary

This activity requests $13.2M in FY2027, 32% of project 0556, down 11% on FY2026. The R-2A exhibit describes it across FY2026–FY2027, including what the FY2027 money is planned to buy.

## What the FY2027 request buys

**FY2027 planned work.** FY 2027 efforts include continued developments efforts such as Built-In-Test (BIT) capability, new capability improvement areas, systems engineering, software and aircraft integration related activities to ensure seamless transition of capability into host aircraft and begin testing of various components for additional capabilities. Development and testing of upgraded components of AN/ALQ-99 to address specific threats, such as the Modernized Universal Exciter Upgrade (M-UEU), to provide additional capability. Additional efforts include the development, integration and test of software builds, and potential related prototyping activities related to current TJS such as but not limited to AN/ALQ-99 TJS, AN/ALQ-249 Next Generation Jammer Mid-Band (NGJ-MB) and future Low Band (LB) frequency jamming systems to provide continually improved capabilities.

**FY2026 to FY2027 change.** Funding decreases from FY 2026 to FY 2027 in alignment with RDTE,N rebalancing priorities.

## Before the request year

**FY2026 plans — current year.** FY 2026 efforts include development of new capability improvement areas, systems engineering, software and aircraft integration related activities to ensure seamless transition of capability into host aircraft and begin testing of various components for additional capabilities. Additional efforts include the development, integration and test of software builds, and potential related prototyping activities related to current TJS such as but not limited to AN/ALQ-99 TJS, AN/ALQ-249 Next Generation Jammer Mid-Band (NGJ-MB) and future Low Band (LB) frequency jamming systems to provide continually improved capabilities.

## Funding

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 0.0 |
| FY2026 | Enacted | 14.9 |
| FY2027 | Request | 13.2 |

> Prior, current and budget year only — an R-2A activity carries no five-year plan. It sums exactly into its project in the request year and not necessarily in any other.

## Other activities in project 0556

- [Jammer Techniques Optimization (JATO)](https://hitchintel.com/programs/0604270N/0556/a0) — FY2027 18.7
- Electronic Warfare (EW) Advanced Development — FY2027 9.4

## Source & machine access

- **Source:** FY2027 Department of the Navy RDT&E Budget Justification, Exhibit R-2A, PE 0604270N project 0556 (PB PB2027). Narrative is the government's own text.
- **No marks, no contractors at this grain** — congressional marks land on the program element and R-3 performers on the project.
- **MCP:** `mcp.hitchintel.com` — `budget_get_activity`.

*HitchAI is an independent intelligence service, not affiliated with the U.S. Department of Defense. Budget figures are requests/estimates, not obligations.*