Ninth Supplemental Indenture, dated as of January 21, 2011



 Exhibit 4.3 
 NINTH SUPPLEMENTAL INDENTURE 
 This Ninth Supplemental Indenture (this
“Supplemental Indenture”), dated as of January 21, 2011, among Dycom Investments, Inc., a Delaware corporation (the “Company”), the guarantors listed on the signature pages hereto (collectively, the
“Guarantors”) and U.S. Bank National Association, as successor trustee under the Indenture referred to below (the “Trustee”). 
 W I T N E S S E T H 
 WHEREAS, the Company and the Guarantors
have heretofore executed and delivered to the Trustee an indenture, dated as of October 11, 2005 (as amended and supplemented, the “Indenture”) providing for the issuance of 8 1/8% Senior Subordinated Notes due 2015 (the “Notes”);

 WHEREAS, under Section 9.02 of the Indenture, the Company and the guarantors party thereto and the Trustee may
amend the Indenture with the consent of the Holders of at least a majority in aggregate principal amount of the Notes then outstanding voting as a single class pursuant to the terms set forth therein; 

WHEREAS, the Company desires by this Supplemental Indenture to amend certain provisions of the Indenture; 

WHEREAS, in connection with the tender offer and consent solicitation of the Company commencing on January 6, 2011, with respect to
the Notes (the “Tender Offer”), consents to the amendments set forth in Article I herein have been received from the Holders of at least a majority in principal amount of the outstanding Notes; 

WHEREAS, this Supplemental Indenture has been duly authorized by all necessary corporate action on the part of the Company; 

WHEREAS, the Company has directed the Trustee to execute and deliver this Supplemental Indenture in accordance with Section 9.02 of
the Indenture; 
 WHEREAS, the amendments set forth herein do not trigger subsections (1) through (9) of
Section 9.02 of the Indenture; 
 WHEREAS, capitalized terms used herein without definition shall have the meanings
assigned to them in the Indenture; and 
 WHEREAS, all other conditions and requirements necessary to make this Supplemental
Indenture a valid, binding and legal instrument enforceable in accordance with its terms have been performed and fulfilled by the parties hereto, and the execution and delivery thereof have been in all respects duly authorized by the parties hereto.








 NOW THEREFORE, in consideration of the foregoing and for other good and valuable
consideration, the receipt of which is hereby acknowledged, the Company, the Guarantors and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders of the Notes as follows: 

ARTICLE I 

AMENDMENTS 

Section 1.01. Any defined terms appearing in Section 1.01 (Definitions) of the Indenture that are used solely in
the sections, subsections or provisions of the Indenture deleted from the Indenture by virtue of Article I of this Supplemental Indenture shall be deleted in their entireties from Section 1.01 of the Indenture. 

Section 1.02. The heading and text of each of Section 4.01 (Changes in Covenants When Notes Rated Investment Grade);
Section 4.04 (Reports); Section 4.05 (Compliance Certificate); Section 4.06 (Taxes); Section 4.07 (Stay, Extension and Usury Laws); Section 4.08 (Restricted Payments); Section 4.09 (Dividend and Other Payment
Restrictions Affecting Subsidiaries); Section 4.10 (Incurrence of Indebtedness and Issuance of Preferred Stock); Section 4.11 (Asset Sales); Section 4.12 (Transactions with Affiliates); Section 4.13 (Liens); Section 4.14
(Business Activities); Section 4.15 (Corporate Existence); Section 4.16 (Offer to Repurchase upon Change of Control); Section 4.17 (No Layering of Debt); Section 4.18 (Limitation on Sale and Leaseback Transactions);
Section 4.19 (Payments for Consent); Section 4.20 (Additional Note Guarantees); Section 4.21 (Designation of Restricted and Unrestricted Subsidiaries) and Section 5.01(a)(4) and (b)(4) (Merger, Consolidation or Sale of Assets) of
the Indenture are deleted in their entirety and are each replaced with the following: 
 “{Reserved}”. 

Section 1.03. Clauses (3), (4), (5), (6), (7), (8) and (9) of Section 6.01 are hereby deleted in their
entirety and are each replaced with the following: 
 “{Reserved}”. 

Section 1.04. Any Notes issued under any provision of the Indenture subsequent to the date of this Supplemental
Indenture shall bear a notation, in form acceptable to the Trustee, referring to this Supplemental Indenture, and shall vary from the form attached to the Indenture as Exhibit A as follows: 

(a) The text of Section 7 of the form of Note attached as Exhibit A to the Indenture shall be deleted in its entirety and replaced
with the following: 
 “{Reserved}”. 
 (b) Clauses (iii), (iv), (v), (vi), (vii) and (viii) of Section 12 of the form of Note attached as Exhibit A to the Indenture shall be deleted in its entirety and replaced with the
following: 
 “{Reserved}”. 







 ARTICLE II 
 MISCELLANEOUS 
 Section 2.01. Effectiveness of Ninth
Supplemental Indenture. This Ninth Supplemental Indenture shall become effective as of the date hereof; provided that the provisions of Article I of this Supplemental Indenture shall not become operative until the date and time (such
date and time, the “Operational Time”) at which the Company pays the applicable consideration for the Notes accepted by the Company for purchase on the Early Acceptance Date, as defined in the Offer to Purchase and Consent
Solicitation Statement dated January 6, 2011 with respect to the Tender Offer. In the event the Company notifies (in writing) the Depositary that it has withdrawn or terminated the Tender Offer prior to the Operational Time, this Supplemental
Indenture shall be terminated and be of no force or effect and the Indenture shall not be modified hereby. 

Section 2.02. Effect of Supplemental Indenture. Except as expressly amended hereby, the Indenture is in all
respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. Upon the execution and delivery of this Supplemental Indenture by the Company, the Guarantors and the Trustee, this
Supplemental Indenture shall form a part of the Indenture for all purposes, and every holder of Securities heretofore or hereafter authenticated and delivered shall be bound hereby. Any and all references to the Indenture, whether within the
Indenture or in any notice, certificate or other instrument or document, shall be deemed to include a reference to this Supplemental Indenture (whether or not made), unless the context shall otherwise require. 

Section 2.03. Counterparts. The parties may sign any number of copies of this Supplemental Indenture. Each
signed copy shall be an original, but all of them together represent the same agreement. The exchange of copies of this Supplemental Indenture and of signature pages by facsimile or electronic transmission shall constitute effective execution and
delivery of this Supplemental Indenture as to the parties hereto and may be used in lieu of the original Supplemental Indenture for all purposes. Signatures of the parties hereto transmitted by facsimile or electronic transmission shall be deemed to
be their original signatures for all purposes. 
 Section 2.04. NEW YORK LAW TO GOVERN. THE LAW OF THE
STATE OF NEW YORK SHALL GOVERN AND BE USED TO CONSTRUE THIS SUPPLEMENTAL INDENTURE. 

Section 2.04. Headings. The Section headings herein are for convenience only and shall not affect the
construction hereof. 
 Section 2.06. Trustee. The Trustee shall not be responsible in any manner
whatsoever for or in respect of the validity or sufficiency of this Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made solely by the Company and the Guarantors and not by the Trustee.

 Section 2.07. Successors and Assigns. All covenants and agreements in this Supplemental Indenture by the
Company shall bind its successors and assigns, whether so expressed or not. 







 Section 2.08. Severability. In case any provision in this Supplemental
Indenture shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby. 

Section 2.09. Trust Indenture Act Controls. If any provision of this Supplemental Indenture limits, qualifies
or conflicts with another provision of this Supplemental Indenture or the Indenture that is required to be included by the Trust Indenture Act of 1939, as amended (the “Act”), as in force at the date this Supplemental Indenture is
executed, the provision required by the Act shall control. 
 [Signature Pages Follow] 







 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be
duly executed as of the day and year written above. 
  

					
	DYCOM INVESTMENTS, INC.
		
	By:	 	           /s/ H. Andrew
DeFerrari

		 	Name:	 	H. Andrew DeFerrari
		 	Title:	 	Treasurer










					
	 GUARANTORS:

	 ANSCO & ASSOCIATES, LLC

	 APEX DIGITAL, LLC

	 BROADBAND EXPRESS, LLC

	 BROADBAND INSTALLATION SERVICES, LLC

	 C-2 UTILITY CONTRACTORS, LLC

	 CABLE CONNECTORS, LLC

	 CABLECOM, LLC

	 CABLECOM OF CALIFORNIA, INC.

	 CAN-AM COMMUNICATIONS, INC.

	 CAVO BROADBAND COMMUNICATIONS, LLC

	 CERTUSVIEW LEASING, LLC

	 COMMUNICATIONS CONSTRUCTION GROUP, LLC

	 DYCOM CAPITAL MANAGEMENT, INC.

	 DYCOM CORPORATE IDENTITY, LLC

	 DYCOM IDENTITY, LLC

	 ERVIN CABLE CONSTRUCTION, LLC

	 GLOBE COMMUNICATIONS, LLC

	 INSTALLATION TECHNICIANS, LLC

	 IVY H. SMITH COMPANY, LLC

	 LAMBERT’S CABLE SPLICING COMPANY, LLC

	 LOCATING, INC.

	 NICHOLS CONSTRUCTION, LLC

	 NIELS FUGAL SONS COMPANY, LLC

	 NIELS FUGAL SONS COMPANY OF CALIFORNIA, INC.

	 POINT TO POINT COMMUNICATIONS, INC.

	 PRECISION VALLEY COMMUNICATIONS OF VERMONT, LLC

	 PRINCE TELECOM, LLC

	 PRINCE TELECOM OF CALIFORNIA, INC.

	 RJE TELECOM, LLC

	 RJE TELECOM OF CALIFORNIA, INC.

	 STAR CONSTRUCTION, LLC

	 STEVENS COMMUNICATIONS, LLC

	 S.T.S., LLC

	 TCS COMMUNICATIONS, LLC

	 TESINC, LLC

	 TESINC OF CALIFORNIA, INC.

	 TRIPLE-D COMMUNICATIONS, LLC

	 U G T I

	 UNDERGROUND SPECIALTIES, LLC

	 UTILIQUEST, LLC

	 WHITE MOUNTAIN CABLE CONSTRUCTION, LLC

		
	By:	 	           /s/ H. Andrew
DeFerrari

		 	Name:	 	H. Andrew DeFerrari
		 	Title:	 	Treasurer








 
			
	MIDTOWN EXPRESS, LLC
		
	By:	 	 /s/ Joseph Danno

	Name:	 	Joseph Danno
	Title:	 	President
	
	OSP SERVICES, LLC
		
	By:	 	 /s/ Marvin Glaser

	Name:	 	Marvin Glaser
	Title:	 	President









 
					
	DYCOM INDUSTRIES, INC.
		
	By:	 	           /s/ H. Andrew
DeFerrari

		 	Name:	 	H. Andrew DeFerrari
		 	Title:	 	Senior Vice President and 
		 		 	Chief Financial Officer









 
					
	U.S. BANK NATIONAL ASSOCIATION
	as Trustee
		
	By:	 	               /s/
Terence Rawlins

		 	Name:	 	Terence Rawlins
		 	Title:	 	Vice President