Amend00002.pdf

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing items 8 and 15, and returning or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment your desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable)

7. ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 10-83)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION

NO.

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers is extended, is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER NO.

IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print)

16C. DATE SIGNED

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

PAGE OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

NSN 7540-01-152-8070

Previous edition unusable

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US Naval Research Laboratory 4555 Overlook Avenue, SW Washington DC 20375

57-1051-16

N00173-17-R-GB01

1 3

11/22/2016

11/28/2016

Solicitation Number: N00173‐17‐R‐GB01 Amendment 0001

1. In the SOW Section 3.0 Overview describes 3 of the antennas must fit the tapered cylinder configuration. But the description of quantities of antennas (straight circular versus tapered circular) required for delivery in each phase is unclear. Please clarify quantity of each type of antenna for each delivery phase: Preliminary, Critical and Final.

Response: The list of deliverables in the SOW Para 1.0 and Para 6.0 are correct. The deliverables and due dates are: 10 preliminary forward antennas 3 months after award, one pair of antennas (one forward antenna and one aft antenna) at a CDR 6 months after award, and three final pairs (three forward antennas and three aft antennas) 12 months after award. The forward antennas must fit in the straight cylinder section and the aft antennas must fit in the tapered cylinder section.

2. What material makes up the straight and tapered circular cylinders that will surround the circular side of each antenna? What is the back wall material residing at the rear of the antenna?

Response: It is anticipated that the forward and aft cylindrical sections will be manufactured from aluminum tubing with a 0.050 inch wall thickness but this is not a requirement as long as the cylinder does not exceed the outside diameter specifications. The back wall material will be a solid bulkhead of some metal (probably aluminum or copper) with a 2.92 mm compatible radio frequency coaxial feed-through in the center. As explained in the specification, the coaxial feed-through will be provided to the contractor no later than CDR. The hole patterns for any attachments to the bulkhead will need to be discussed with contractor and determined prior to

CDR.

3. In reference to the “associated mounting brackets or flanges” mentioned in para. 4.2.1.4 of the SOW, what region of the platform (cylinder) is available to host the mounting hardware?

More specifically, what part of the assembly is accessible for integration of the antennas?

Response: As discussed in 2), the antennas will mount to the bulkhead (i.e., back wall), possibly using tapped holes in the bulkhead for attaching the antenna. The entire bulkhead is available for attachment except for the center that contains the 2.92 mm compatible connector.

4. In reference to section 3.0 Overview from the SOW, “a radome will be required to seal both forward and aft ends of the cylinder”. Does NRL’s integration plan for the antenna with the host cylinder include a sealant or gasket? Does the cylinder include a lip for the antenna to push against to complete the seal?

Response: The contractor must devise a means to rigidly attach the radome to the end of the cylinder. The use of the word “sealed” in the overview can be interpreted as “rigidly attached” in this case.

5. If a capable NRL facility is identified to provide the antenna testing, can this be provided as government furnished in our cost estimates?

Response: As described in the SOW, the deliverables must include measured antenna patterns to be provided by the contractor.

Solicitation Number: N00173‐17‐R‐GB01 Amendment 0001

6. Does NRL want the contractor to conduct high power testing of the antennas?

Response: The contractor must provide measured data that indicates performance relative to the requirements of the specification.