# 4 1/16" Coaxial Dual Directional Coupler

Canonical: https://abierto.us/opportunities/rfp375295rlp

- Solicitation number: RFP_375295RLP
- Notice type: Solicitation
- Status: Closed. Deadline was November 7, 2025 at 6:00 PM EST
- Department: Department of Energy
- Contracting office: Fermilab - DOE Contractor (899034)
- NAICS: 334419 Other Electronic Component Manufacturing
- Product or service code: 5999 Miscellaneous Electrical and Electronic Components
- Place of performance: Batavia, Illinois
- County: Kane County (FIPS 17089). https://abierto.us/counties/kane-county-il-17089
- City: Batavia. https://abierto.us/cities/batavia-il-1704078
- First posted: October 23, 2025
- Last posted: October 31, 2025
- SAM.gov: https://sam.gov/workspace/contract/opp/e4a28b3e500b49de8cc981c5b8793e41/view

## Description

Please provide a proposal that meets specification requirements outlined in document RFP 375295RLP and include completed accompany documents: SARC and PUR-466.

**UPDATE 10/31/2025:** Fermilab needs couplers to sustain small differential air pressure. This will ensure that there are acceptable levels of non-ionizing radiation around the RF distribution lines after constructed or modified. Fermilab expects the RF distribution to run fully reflected from the cavity. Cross talk between ports during operation must be limited for diagnostic purposes. The procurement of the fixed transmission line has not begun, no commitment to brand at this time.

Fermilab has found that the termination is the most delicate part of the directional coupler. Previous replacements have occurred in the past. Having an external termination makes repair process easier. An acceptable option would be an internal termination that could be replaced in house, in the event of failure.

## Publications

- October 23, 2025: Solicitation, due November 7, 2025 at 6:00 PM EST. Notice be4971e2ab574b35b8b2b022cdc08d54. https://sam.gov/workspace/contract/opp/be4971e2ab574b35b8b2b022cdc08d54/view
- October 31, 2025: Solicitation, due November 7, 2025 at 6:00 PM EST. Notice e4a28b3e500b49de8cc981c5b8793e41. https://sam.gov/workspace/contract/opp/e4a28b3e500b49de8cc981c5b8793e41/view

## Points of contact

- Rhiannon Patterson, rhiannon@fnal.gov, 6054312905

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/rfp375295rlp.