31R4-2GRN30-2-1.pdf

31R4-2GRN30-2-1

6 JUNE 2003

IDENTIFYING TECHNICAL PUBLICATION SHEET

FOR

COMMERCIAL MANUAL

1. PURPOSE: This technical publication is issued for the purpose of indenting and authorizing the following commercial manual for Air Force use.

MANUFACTURER: Alenia Marconi Systems (ASI), Inc.

11300 West 89th Street Overland Park, KS U.S.A. 66214

PURCHASE ORDER OR CONTRACT NO.: F42620-00-D-0034, D.O. 0004

EQUIPMENT: USAF AN/GRN-30(V) Localizer Replacement Antenna Subsystem, 14 Element Single Freq., 470513-0002 14 Element Dual Freq., 470513-0003

TITLE: Supplemental To Operations and Maintenance Manual Localizer Replacement Antenna

DATE: 6 June 2003

2. AUTHORITY NOTICE, DISTRIBUTION STATEMENT, DISCLOSURE NOTICE

NOTICE: Reproduction for non-military use of the information or illustrations contained in this publication is not permitted. The policy for military reproduction is established for the Army in AR 38-4, for the Navy and Marine Corps in OPNAVINST 5510.1, and for the Air Force in AFPD 34-1.

DISTRIBUTION STATEMENT B - Distribution authorized to U.S. Government agencies only for Administrative or Operational Use, 6 June 2003. Other requests for this document must be referred to OC- ALC/LIRF, Tinker AFB, OK 73145-3029.

WARNING - This document contains technical data whose export is restricted by the Arms Export control Act (Title 22, U.S.C., Sec 2751 et seq.) or the Export Administration Act of 1979, as amended, Title 50, U.S.C., App. 2401, et seq. Violation of these export-control laws is subject to severe criminal penalties. Dissemination of this document is controlled under DoD Directive 5230.25.

HANDLING AND DESTRUCTION NOTICE - Comply with distribution statement and destroy by any method that will prevent disclosure of the contents or reconstruction of the document.

Operations & Maintenance Manual AMS (ASI) Inc. P/N 570026-0001

USAF AN/GRN-30(V) LOCALIZER

REPLACEMENT ANTENNA SUBSYSTEMS

Equipment Part Numbers:

14-element, Single Frequency – 470513-0002 14-element, Dual Frequency – 470513-0003

THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION AND SUCH

INFORMATION MAY NOT BE DISCLOSED TO OTHERS FOR ANY

PURPOSES WITHOUT WRITTEN PERMISSION FROM

ALENIA MARCONI SYSTEMS (ASI), INC.

Rev G, June 2003

Copyright © 1998 - 2003

ALENIA MARCONI SYSTEMS (ASI), INC.

11300 West 89th Street Overland Park, KS U.S.A. 66214

THIS PAGE INTENTIONALLY BLANK

USAF AN/GRN-30(V) Localizer Replacement Antenna Subsystems

Rev G June, 2003

SAFETY SUMMARY

The following are general safety precautions that are not related to any specific procedures and therefore do not appear elsewhere in this publication. These are recommended precautions that personnel must understand and apply them during many phases of operation and maintenance.

ELECTROSTATIC SENSITIVE DEVICES PRECAUTIONS

Since most modules used in all models of equipment have Electrostatic Discharge (ESD) sensitive devices included in them, all modules should be considered sensitive to electrostatic discharge. Handling in the field shall be the same as in the factory. Each system is shipped with a wrist strap that must be worn while maintaining the equipment. The wrist strap shall be fastened to the equipment chassis either in the designated plug-in or attached to the equipment chassis with the alligator clip. The wrist strap must be used before any modules are removed from the equipment and at all times while handling the modules until they are placed in a protective environment such as an anti-static bag. Modules or boards must not be placed on any non-conducting surface such as wooden workbenches, painted metal workbenches, plastics, or technical manuals. Any work surface to be used must have a conducting mat placed on it and attached to earth ground. The mat and additional wrist straps can be obtained from Alenia Marconi Systems (ASI), Inc.

KEEP AWAY FROM LIVE CIRCUITS

Operating personnel must at all times observe all safety regulations. Under no circumstances should any person remove any protective covers that expose lethal voltages. Do not replace components or make adjustments inside the equipment with primary power supply turned on.

Under certain conditions, dangerous potentials may exist when the power is in the off position, due to charges retained by capacitors. To avoid casualties, always remove power and allow time for the capacitors to discharge before touching it.

DO NOT SERVICE OR ADJUST ALONE

Under no circumstances should any person reach into or enter the enclosure for the purpose of servicing or adjusting the equipment except in the presence of someone who is capable of rendering aid.

RESUSCITATION

Personnel working with or near high voltages should be familiar with modern methods of resuscitation.

June, 2003

USAF AN/GRN-30(V) LOCALIZER REPLACEMENT

ANTENNA SUBSYSTEMS

Technical Support:

Alenia Marconi Systems (ASI), Inc. provides technical support through the Customer Service Manager (CSM) desk on a 24 hour, 7 days a week basis. The CSM fields technical support and trouble calls and as necessary directs them to appropriate technical personnel within the company.

During normal business hours the CSM can be reached by phone, fax, or email at the Alenia Marconi Systems (ASI), Inc. facility. At all times, the CSM direct phone number listed below can be used to contact the CSM. This number is always answered during normal business hours and is forwarded at other times to the on-duty customer service contact.

When contacting the CSM by fax or email, please provide the following information:

• Location

• Date

• Contact name

• Contact phone number

• Problem description

Contact Information:

Alenia Marconi Systems (ASI), Inc.

11300 W 89th Street, Overland Park KS, 66214, USA

Main Switchboard: (913) 495-2600 Main Fax: (913) 492-0870 Toll free: (800) 331-2744 CSM Direct Phone: (913) 495-2625 CSM Cell Phone: (913) 269-5018 CSM E-mail: Support@US-AMSjv.com World Wide Web URL: www.US-AMSjv.com

June, 2003

LRU Replacement Request Procedure:

In the event of an LRU failure, contact the CSM to request a replacement. The customer can phone in the request but must follow up with a hard copy via fax or email. A Return Material Authorization (RMA) number will be issued to the customer for tracking purposes.

The request should have the following information:

• Customer supplied tracking number (if any)

• RMA number

• LRU part number

• Site location

• System information

• Ship to address

• Contact name and number

• Date and time of request

Upon receipt of the request Alenia Marconi Systems (ASI), Inc. shall immediately ship the LRU for receipt at a CONUS destination within 24 hours.

To ensure the most rapid response possible, urgent replacement requests should always be made to the CSM direct phone number listed above.

Return of Failed LRUs:

Prompt return of failed units from the field is essential to maintain an adequate stock of replacements. If a failed unit is not received at the factory within 10 working days, a replacement unit will be added to the spares pool from normal manufacturing inventory. In this case, the customer will be billed for the replacement cost of the unit.

To accommodate non-CONUS locations, where it may be difficult to guarantee return within this 10 working day period, evidence of timely shipment will be accepted in lieu of actual receipt of the failed LRU. The evidence can be in the form of an e-mail or fax message giving information on the shipper and the shipment tracking number. This evidence must be provided to Alenia Marconi Systems (ASI) Inc. no later than 10 working days after the replacement LRU was received.

June, 2003

June, 2003

ALENIA MARCONI SYSTEMS (ASI) INC.

MANUFACTURER'S WARRANTY

A. The Manufacturer warrants to the original Purchaser, subject to the limitations and exclusions stated below, that mechanical and electrical parts of products which it manufactures, (the "Products") will be free of defects in materials and workmanship for a period of five years from the date of shipment (the "Warranty Period").

B. If the Customer believes a Product is defective, notice thereof shall be provided to the

Manufacturer's Customer Service Department at the address provided on the cover page and (if applicable) to the selling distributor. A defect in material and workmanship covered by this warranty shall be deemed to have occurred only if, and as of the time when, the Manufacturer is notified in writing by the Customer, within the Warranty Period, that the Product has become defective, and the Manufacturer's personnel verify that the said Product, in fact, does not comply with the warranty provided hereunder and it is determined that:

(i) The Products, during the entire Warranty Period, have been operated within normal service conditions recommended by the Manufacturer and recognized in the industry, and

(ii) The Products have been installed and adjusted according to the Manufacturer's procedures as stated in the Operation and Maintenance Manuals or other instructions supplied in writing by the Manufacturer.

C. Failures caused by lightning or other acts of God, or power surges, are not considered to be defects in materials and workmanship and are not covered under this warranty. Routine maintenance and calibration are also not considered to be defects in materials and workmanship and are not covered under this warranty. Any change, modification or alteration of the Manufacturer's Products not specifically authorized by the Manufacturer will void this warranty.

D. If it is determined that the conditions for warranty coverage, as described above, have been satisfied, the Manufacturer shall repair or replace the defective products or parts thereof in accordance with the following procedures:

(i) Customer will contact the Manufacturer's Customer Service Department that will issue the Customer a Return Authorization (RA) number.

(ii) The Component, defective part, or Product, as appropriate, shall be returned to the

Manufacturer for inspection, freight prepaid by the customer. The RA number must be clearly displayed on the exterior of the shipping container. No shipments will be accepted without a RA number. The Customer will pay all custom duties, fees, etc.

June, 2003

MANUFACTURER'S WARRANTY (CONTINUED)

(iii) If, upon inspection it is determined by Manufacturer's personnel that the Product or component thereof is defective and covered by this warranty, then Manufacturer, at its option, may either repair the Product or defective components thereof and return the same to the Customer or ship a replacement for the defective Product or part thereof, freight paid. All customs duties, fees, etc. will be paid by the Customer. The Product or component thereof will be returned to the customer utilizing a shipping mode similar to that used by Customer to ship the same to the Manufacturer.

(iv) If, upon inspection by Manufacturer, it is determined that the Product or component thereof was not defective or was not covered by this warranty, then the cost of all of Manufacturer's inspections and the return shipping charges will be charged to Customer.

(v) In some instances, the Customer may request troubleshooting assistance from the

Manufacturer. If in the course of such troubleshooting the Manufacturer directs testing or part replacements, and subsequent breakage of a part occurs as a result of such Manufacturer directed actions, repair or replacement of the broken part will be covered under warranty.

(vi) In the event that there is a dispute between the Manufacturer and the Customer as to whether a failure is covered under warranty or not, the dispute will be resolved between the designated USAF Program Management Office and the Manufacturer.

E. The Manufacturer reserves the right to make modifications and alterations to Products without obligation to install such improvements on, in, or in place of theretofore manufactured Products of Manufacturer.

F. This warranty applies only to the original purchaser and, unless Customer receives the express written consent of an officer of Manufacturer, this warranty may not be assigned, transferred, or conveyed to any third party, even if the third party is a bon a fide purchaser of the Products.

G. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES,

EXPRESSED OR IMPLIED. WHETHER STATUTORY OR OTHERWISE, INCLUDING

ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A

PARTICULAR PURPOSE, IN NO EVENT SHALL THE MANUFACTURER BE LIABLE

FOR INDIRECT, INCIDENTAL, COLLATERAL, PUNITIVE, OR CONSEQUENTIAL

DAMAGES OF ANY KIND, WHETHER ARISING OUT OF CONTRACT, TORT,

NEGLIGENCE, STRICT LIABILITY, OR OTHER PRODUCTS LIABILITY THEORY.

June, 2003

MANUFACTURER'S WARRANTY (CONTINUED)

H. CUSTOMER'S SOLE REMEDY FOR ANY BREACH OF THE WARRANTY SHALL BE

THE REPAIR OR REPLACEMENT OF THE PRODUCTS BY THE MANUFACTURER

AS PROVIDED HEREIN, AND IN NO EVENT SHALL THE MANUFACTURER BE

REQUIRED TO INCUR COSTS FOR THE REPAIR OR REPLACEMENT OF ANY

PRODUCT IN EXCESS OF THE PURCHASE PRICE OF SUCH PRODUCT, PLUS ANY

TRANSPORTATION CHARGES ACTUALLY PAID ATTRIBUTABLE TO SUCH

PRODUCTS.

Rev G i June, 2003

TABLE OF CONTENTS

PARAGRAPH # DESCRIPTION PAGE

SECTION 1. GENERAL INFORMATION AND REQUIREMENTS..................................... 1-1

1.1 INTRODUCTION............................................................................................................. 1-1

1.2 EQUIPMENT DESCRIPTION.......................................................................................... 1-1

1.2.1 Description..................................................................................................................... 1-2

1.2.2 Localizer Antenna .......................................................................................................... 1-3

1.2.2.1 Distribution Assembly (Unit 6).................................................................................... 1-4

1.2.2.2 RF Distribution Assembly (6A1) ................................................................................. 1-4

1.2.2.3 RF Combiner Assembly (6A2) .................................................................................... 1-4

1.2.2.4 Cable Fault CCA (6A4) ............................................................................................... 1-4

1.2.3 Misalignment Assembly ................................................................................................. 1-4

1.2.4 Trough Kit...................................................................................................................... 1-4

1.2.5 Obstruction Lights.......................................................................................................... 1-4

1.3 EQUIPMENT SPECIFICATIONS DATA ........................................................................ 1-5

1.4 EQUIPMENT AND ACCESSORIES SUPPLIED............................................................. 1-6

1.5 EQUIPMENT REQUIRED BUT NOT SUPPLIED........................................................... 1-6 SECTION 2. TECHNICAL DESCRIPTION........................................................................... 2-1

2.1 INTRODUCTION............................................................................................................. 2-1

2.2 BLOCK DIAGRAM THEORY......................................................................................... 2-1

2.2.1 General........................................................................................................................... 2-1

2.2.2 RF Distribution Network ................................................................................................ 2-3

2.2.3 RF Combiner Assembly ................................................................................................. 2-3

2.2.4 Cable Fault CCA ............................................................................................................ 2-3

2.2.5 LPD Antenna Element.................................................................................................... 2-3

2.2.6 Antenna Misalignment Detector ..................................................................................... 2-4

2.2.7 RF Detector Unit (RDU) ................................................................................................ 2-4

2.2.7.1 Dual Frequency RDU .................................................................................................. 2-4

2.2.7.2 Single Frequency RDU................................................................................................ 2-7

2.3 DETAILED THEORY OF OPERATION ......................................................................... 2-9

2.3.1 LPD Antenna.................................................................................................................. 2-9

2.3.2 Antenna Radiation Patterns............................................................................................. 2-9

2.3.2.1 Antenna Element Radiation Pattern ............................................................................. 2-9

2.3.2.2 CSB Pattern............................................................................................................... 2-12

2.3.2.3 SBO Pattern............................................................................................................... 2-16

2.3.3 Distribution Assembly (Unit 6)..................................................................................... 2-17

2.3.3.1 RF Distribution Assembly (6A1) ............................................................................... 2-17

2.3.3.1.1 Hybrid Couplers ..................................................................................................... 2-17

2.3.3.1.2 Unequal Power Division ......................................................................................... 2-19

2.3.3.1.3 Combiner/Divider Hybrid Couplers ........................................................................ 2-19

2.3.3.1.4 In-line Phasing Detector ......................................................................................... 2-22

2.3.3.2 RF Combiner Assembly (6A2) .................................................................................. 2-23

2.3.3.3 Cable Fault CCA (6A4) Detailed Circuit Theory ....................................................... 2-23

2.3.3.4 Misalignment Kit....................................................................................................... 2-24 ii Rev G June, 2003

2.3.4 RF Detector Unit (RDU) .............................................................................................. 2-25

2.3.4.1 Dual Frequency RDU ................................................................................................ 2-25

2.3.4.2 Single Frequency RDU.............................................................................................. 2-29

2.4 POWER DISTRIBUTION .............................................................................................. 2-32 SECTION 3. OPERATION..................................................................................................... 3-1

3.1 INTRODUCTION............................................................................................................. 3-1

3.2 DUAL FREQUENCY RF DETECTOR UNIT .................................................................. 3-1

3.3 SINGLE FREQUENCY RF DETECTOR UNIT ............................................................... 3-3 SECTION 4. STANDARDS AND TOLERANCES ................................................................ 4-1

4.1 INTRODUCTION............................................................................................................. 4-1 SECTION 5. PERIODIC MAINTENANCE............................................................................ 5-1

5.1 INTRODUCTION............................................................................................................. 5-1

5.2 PERFORMANCE CHECKS ............................................................................................. 5-1 SECTION 6. MAINTENANCE PROCEDURES .................................................................... 6-1

6.1 INTRODUCTION............................................................................................................. 6-1

6.2 PERFORMANCE CHECK PROCEDURES ..................................................................... 6-1

6.2.1 LPD Antenna Test Procedure ......................................................................................... 6-1

6.2.1.1 Procedure and Conditions ............................................................................................ 6-1

6.2.1.2 LPD Antenna VSWR................................................................................................... 6-2

6.2.1.2.1 Test Equipment Required.......................................................................................... 6-2

6.2.1.2.2 Procedure ................................................................................................................. 6-2

6.2.1.3 Monitor Insertion Loss and Phase ................................................................................ 6-6

6.2.1.3.1 Test Equipment Required.......................................................................................... 6-6

6.2.1.3.2 Procedure ................................................................................................................. 6-6

6.2.2 RF Distribution Network Test Procedure........................................................................ 6-9

6.2.2.1 Test Equipment Required ............................................................................................ 6-9

6.2.2.2 Procedure and Conditions ............................................................................................ 6-9

6.2.2.3 RF Distribution Network VSWR ................................................................................. 6-9

6.2.2.4 Antenna Output Port Amplitude and Phase ................................................................ 6-10

6.2.3 RF Combiner Assembly ............................................................................................... 6-12

6.2.3.1 Test Equipment Required .......................................................................................... 6-12

6.2.3.2 Procedure and Conditions .......................................................................................... 6-12

6.2.3.3 RF Combiner Assembly VSWR ................................................................................ 6-12

6.2.3.4 Antenna Output Port Amplitude and Phase ................................................................ 6-13

6.2.4 Cable Fault CCA .......................................................................................................... 6-15

6.2.4.1 Test Equipment Required .......................................................................................... 6-15

6.2.4.2 Cable Fault Procedure and Conditions ....................................................................... 6-15

6.2.4.3 Misalignment Procedure and Conditions.................................................................... 6-16

6.2.4.4 Troubleshooting GRN-30 Cable Fault Problems ........................................................ 6-16 SECTION 7. CORRECTIVE MAINTENANCE ..................................................................... 7-1

7.1 INTRODUCTION............................................................................................................. 7-1

7.2 TEST EQUIPMENT REQUIRED..................................................................................... 7-1

7.3 ON-SITE CORRECTIVE MAINTENANCE .................................................................... 7-1

7.3.1 General Troubleshooting Information............................................................................. 7-2

7.4 SPECIAL MAINTENANCE PROCEDURES ................................................................... 7-2

7.4.1 Antenna Feed Cable Length Adjustment......................................................................... 7-2

Rev G iii June, 2003

7.4.2 Antenna Monitor Feed Cable Length Adjustment ........................................................... 7-5

7.5 OFF-SITE REPAIRS ........................................................................................................ 7-8

7.6 OVERHAUL, MAINTENANCE, AND REPAIR STANDARDS...................................... 7-8

7.7 PACKING INSTRUCTIONS............................................................................................ 7-8 SECTION 8. PARTS LIST ..................................................................................................... 8-1

8.1 INTRODUCTION............................................................................................................. 8-1 SECTION 9. INSTALLATION, INTEGRATION, AND CHECKOUT .................................. 9-1

9.1 INTRODUCTION............................................................................................................. 9-1

9.2 SITE INFORMATION...................................................................................................... 9-1

9.3 UNPACKING AND RE-PACKING.................................................................................. 9-1

9.4 INPUT REQUIREMENT SUMMARY ............................................................................. 9-1

9.5 INSTALLATION PROCEDURES.................................................................................... 9-1

9.5.1 Installation Tools and Test Equipment ............................................................................ 9-4

9.5.2 Installation Kits .............................................................................................................. 9-4

9.5.3 Existing Localizer Antenna Array Removal.................................................................... 9-7

9.5.4 AN/GRN-30 Localizer Clearance Rack Removal ........................................................... 9-7

9.5.5 Grounding Kit Installation ............................................................................................ 9-11

9.5.5.1 Trenching and Ground Rod Locations ....................................................................... 9-11

9.5.5.2 CADWELD Procedures............................................................................................. 9-12

9.5.6 Trough Assembly Installation....................................................................................... 9-12

9.5.6.1 Installing Anchor Bolts for a New Location............................................................... 9-12

9.5.6.2 Installing Trough and Antennas ................................................................................. 9-13

9.5.6.3 Concrete Pad for Distrubution Unit........................................................................... 9-13

9.5.7 RF Distribution Unit ..................................................................................................... 9-14

9.5.8 Cable Installation.......................................................................................................... 9-14

9.5.9 Obstruction Light Assembly Installation....................................................................... 9-16

9.5.10 LPD Antenna Misalignment Assembly Installation..................................................... 9-16

9.6 PROCEDURES FOR INTEGRATION AND INTERFACE WITH OTHER

EQUIPMENT ....................................................................................................................... 9-18

9.6.1 RF Interconnect with Localizer Transmitter.................................................................. 9-18

9.6.2 A/C Power Interconnect ............................................................................................... 9-19

9.7 INSTALLATION INSPECTION AND CHECKOUT ..................................................... 9-19

9.7.1 RF Detector Unit Assembly Kit Installation.................................................................. 9-19

9.7.1.1 RF Detector Unit Installation..................................................................................... 9-19

9.7.1.2 RF Coupler Cable Installation (Dual Frequency Systems Only) ................................. 9-21

9.7.1.3 RF Cable Installations (Single Frequency Systems Only)........................................... 9-21

9.7.1.4 RF Detector Unit Control Wiring Installation ............................................................ 9-22

9.7.1.5 RF Detector Unit RF Monitor Cable Installation........................................................ 9-24

9.7.2 Antenna Cable Length Measurement Procedure............................................................ 9-24

9.7.3 Cutting In Antenna Nulls.............................................................................................. 9-27

9.7.3.1 Calculating Cable Lengths ......................................................................................... 9-28

9.7.3.2 Single Frequency Transmitters................................................................................... 9-29

9.7.3.3 Capture Effect Antenna Systems................................................................................ 9-31

9.7.4 Phase Across Array ...................................................................................................... 9-33

9.7.5 Localizer Transmitter System Phasing and Preliminary Width Adjustment ................... 9-36

9.7.5.1 Course Transmitter Phasing ....................................................................................... 9-36 iv Rev G June, 2003

9.7.5.2 Clearance Transmitter Phasing................................................................................... 9-37

9.7.6 Monitor Cable Length Measurement Procedure ............................................................ 9-38

9.7.7 Monitor Cable Null Cutting .......................................................................................... 9-40

9.7.7.1 Single Frequency Localizer Monitor Cable Null Cutting............................................ 9-40

9.7.7.2 Capture Effect Localizer Monitor Cable Null Cutting ................................................ 9-41

9.7.8 Cable Phase And Amplitude Measurement Procedure .................................................. 9-43

9.7.9 Dual Frequency RF Detector Unit (012084-0001) Adjustment...................................... 9-45

9.7.10 Single Frequency RF Detector Unit (012085-0001) Adjustment ................................. 9-48

9.8 INITIAL START-UP AND PRELIMINARY TESTING................................................. 9-53

9.9 INSTALLATION VERIFICATION TEST...................................................................... 9-53 SECTION 10. SOFTWARE.................................................................................................. 10-1

10.1 INTRODUCTION......................................................................................................... 10-1 SECTION 11. TROUBLESHOOTING SUPPORT DATA.................................................... 11-1

11.1 INTRODUCTION......................................................................................................... 11-1

Rev G v

LIST OF FIGURES

FIGURE NO. DESCRIPTION PAGE

N/A Family Tree, GRN-30 Localizer Replacement Antenna Subsystems .. ix

1-1 14-element Localizer Antenna Array ...............................................1-2 1-2 LPD Antenna Element .....................................................................1-3

2-1 LPD Antenna Array Block Diagram ................................................2-2 2-2 Dual Frequency RF Detector ...........................................................2-5 2-3 Single Frequency RF Detector .........................................................2-8 2-4 LPD Antenna Radiation Pattern.....................................................2-11 2-5 LPD Radiation Chart .....................................................................2-12 2-6 14-element Single Frequency Antenna Radiation Pattern...............2-14 2-7 14-element Single Frequency Array DDM Values .........................2-14 2-8 14-element Dual Frequency Antenna Radiation Pattern .................2-15 2-9 14-element Dual Frequency Array DDM Values ...........................2-15 2-10 Antenna Array Spacing..................................................................2-16 2-11 Hybrid Coupler..............................................................................2-18 2-12 Power Divider, Hybrid Coupler .....................................................2-19 2-13 Combiner/Divider Hybrid Coupler ................................................2-21 2-14 Dual Frequency RF Detector Unit..................................................2-26 2-15 Dual Frequency RF Detector Unit..................................................2-27 2-16 Single Frequency RF Detector Unit ...............................................2-31

3-1 Dual Frequency RF Detector Unit Controls .....................................3-1 3-2 Single Frequency RF Detector Unit Controls ...................................3-3

6-1 LPD Antenna VSWR Test Setup .....................................................6-4 6-2 Insertion Loss Reference Level Test Set-Up ....................................6-7 6-3 Insertion Loss and Phase Test Set-Up ..............................................6-8 6-4 DU/CU VSWR..............................................................................6-10 6-5 DU Amplitude and Phase ..............................................................6-11 6-6 Amplitude and Phase .....................................................................6-14

7-1 Antenna Feed Cable Length Adjustment Test Setup ........................7-4 7-2 Monitor Cable Phase Length Adjustment Test Setup .......................7-6 vi Rev G

LIST OF FIGURES (CONT.)

FIGURE NO. DESCRIPTION PAGE

9-1 Typical Localizer Antenna Site Dimensions ....................................9-2 9-2 Typical Trenching Details ...............................................................9-3 9-3 LPD Antenna and Mast, Installation Details ..................................9-14 9-4 Obstruction Light Assembly, Installation Details ...........................9-15 9-5 RF Detector Unit Installation.........................................................9-20 9-6 Antenna Cable Length Measurement .............................................9-26 9-7 Phase Across Array Test Setup......................................................9-35 9-8 Monitor Cable Length ...................................................................9-39 9-9 Monitor Cable Phase & Amplitude ................................................9-44

11-1 Schematic, Distribution Unit, 14-element, 030740-9002................11-3 11-2 Schematic, Distribution Unit Assembly, 14-element SF, 030742-9001.........................................................11-5 11-3 Schematic, Distribution Unit Assembly, 14-element DF, 030750-9001 ........................................................11-7 11-4 Schematic, RF Combiner Assembly, 14-element, 030741-9001 ............................................................11-11 11-5 Schematic, Cable Fault CCA, 012083-9001.................................11-13 11-6 Schematic, LPD Matching Network, 012700-9001 ......................11-17 11-7 Schematic, RF Detector Unit, Dual Frequency, 012084-9001.....................................................11-19 11-8 Schematic, RF Detector Unit, Single Frequency, 012085-9001 ..................................................11-27 11-9 Antenna Array Kit Drawing, 470512 ...........................................11-33 11-10 LPD Antenna Trough Installation Kit, 470564.............................11-37 11-11 DU/Cabinet Installation Kit, 470565............................................11-41 11-12 LPD Antenna Misalignment Kit, 14-element, 470563 .....................................................................11-43 11-13 Exterior Interface Modification Kit, 470525 ................................11-47 11-14 Foundation Detail Drawing, 651362 ............................................11-49 11-15 Foundation Installation, 14-element Localizer Antenna, 651363........................................11-53

Rev G vii June, 2003

LIST OF TABLES

TABLE NO. DESCRIPTION PAGE

1-1 Equipment Specifications Data. Localizer Antenna Array...............1-5 1-2 Equipment Required for Installation but Not Supplied .....................1-7 1-3 Equipment Required for Optional Test in Section 6 and Section 7 .........................................................................................1-7

2-1a 14-element Single Frequency Antenna Array Spacing, Amplitude, and Phase ....................................................................2-20 2-1b 14-element Dual Frequency Antenna Array Spacing Amplitude, and Phase ....................................................................2-20

3-1 Dual Frequency RF Detector Unit (Unit 30) Controls & Indicators ......................................................................3-2 3-2 Single Frequency RF Detector Unit (Unit 30) Controls & Indicators ......................................................................3-4

4-1 Standards and Tolerances ................................................................4-1

5-1 Performance Check Procedures .......................................................5-1

6-1 Monitor Port Disconnect..................................................................6-3 6-2 Distribution Unit Port for Directional Coupler .................................6-3 6-3 VSWR, Related to Return Loss in dB ..............................................6-5 6-4 Distribution Unit Input and Reference Ports ..................................6-10 6-5 Troubleshooting Procedures – Cable Fault Wiring.........................6-17

8-1 GRN-30 14-element Single Frequency Replacement Antenna Subsystem 470513-0002....................................................8-1 8-2 GRN-30 14-element Dual Frequency Replacement Antenna Subsystem 470513-0003....................................................8-2 8-3 Antenna/Monitor Cable Kit, 14-element – 470527-0002..................8-2 8-4 Cable Trough Kit, 14-element - 470564-0001..................................8-3 8-5 Ground Counterpoise Kit - 470269-0003 .........................................8-4 8-6 Hardware Kit, 14-element - 470523-0002........................................8-4 8-7 DU Cabinet Installation Kit - 470565-0001......................................8-5 8-8 Buried Cable Kit, Single Frequency - 470070-0001.........................8-6 8-9 Buried Cable Kit, Dual Frequency - 470071-0001 ...........................8-6 viii Rev G June, 2003

LIST OF TABLES (CONT.)

TABLE NO. DESCRIPTION PAGE

8-10 Exterior Interface Modification Kit - 470525-0001..........................8-7 8-11 Misalignment Kit, 14-element - 470563-0001..................................8-7 8-12 GRN-30 Single Frequency RF Detector Kit - 470517-0001 .............8-8 8-13 GRN-30 Dual Frequency RF Detector Kit - 470517-0002 ...............8-9

9-1 Special Tools...................................................................................9-4 9-2 Grounding Kit (470269-0003) .........................................................9-4 9-3 LPD Antenna Monitor Cable Installation Kit 14-element (470527-0002)...............................................................9-5 9-4a Single Frequency Offset Cable Kit, 250 Ft. (470070-0001)..............9-6 9-4b Dual Frequency Offset Cable Kit, 250 Ft. (470071-0001) ................9-6 9-5 Shelter to Distribution Unit Connections .......................................9-23 9-6a Single Frequency RF Detector (RDU) Output Connections ...........9-23 9-6b Dual Frequency RF Detector (RDU) Output Connections..............9-24 9-7 Switch 1 Settings (Frequency Selection Chart) ..............................9-50 9-8 Standard ILS and DME Frequency Pairing ....................................9-51

11-1 Diagrams .......................................................................................11-1

Rev G 1-1 June, 2003

SECTION 1. GENERAL INFORMATION AND REQUIREMENTS

1.1 INTRODUCTION

This technical instruction book contains data required to operate and maintain the single frequency 14-element, and dual frequency 14-element USAF AN/GRN-30(V) Localizer Replacement Antenna Subsystems utilizing Log Periodic Dipole (LPD) antenna elements, supplied by Alenia Marconi Systems (ASI), Inc., Overland Park, Kansas. Included are a general description and specification data, technical description, operating procedures, standards and tolerances, periodic and corrective maintenance instructions, parts list, installation instructions, computer software description, and troubleshooting support data.

This section contains an equipment description, including purpose of the equipment, and tables of equipment specification data, equipment and accessories supplied, and equipment required but not supplied.

1.2 EQUIPMENT DESCRIPTION

Refer to Figure 1-1. The localizer antenna array radiates RF energy supplied by the localizer transmitter to produce a guidance signal used by aircraft approaching an airport to locate the extended runway centerline.

In the dual frequency system, two separate VHF signals in space are produced, one from the course transmitter and one from the clearance transmitter. The course transmitter output is fed to all 14 antennas to produce a narrow antenna pattern intended to provide coverage within a few degrees of the runway extended centerline. This pattern is narrow to minimize reflections from terrain irregularities or structures near the runway, providing the straightest possible approach path. The clearance transmitter signal is fed to the center 10 antennas of the array to provide a broad pattern of guidance signals outside of the narrow course antenna pattern, out to 35 degrees either side of the runway extended centerline. The aircraft receiver circuitry will select, or be "captured" by, the stronger of the two signals, depending on the aircraft's location in space.

These signals are modulated by information used to laterally guide an aircraft into accurate alignment with the centerline of an airport runway during approach and landing under instrument flight conditions.

In both single and dual frequency systems, two different VHF signals, a Carrier-Plus-Sideband (CSB) and a Sideband-Only (SBO) signal form the radiated signal. The CSB is a VHF carrier wave at an assigned frequency in the range of 108 to 112 MHz that is amplitude modulated to equal depths by the 90 Hz and 150 Hz audio navigational tones. The SBO signal is a double sideband, suppressed carrier, of 90 Hz and 150 Hz tones. The phase of the SBO 90 Hz modulation is opposite in phase to that of the 90 Hz CSB modulation. The two signals combine in space to form a space modulated wave with a difference between the depth of the 90 Hz modulation and the depth of the 150 Hz modulation that varies within prescribed limits as a function of azimuth relative to the extended centerline of the runway.

1-2 Rev G June, 2003

The nature of this variation causes the signal received by an approaching aircraft:

a) To be predominantly 90 Hz modulated when the aircraft is to the left of the runway extended centerline.

b) To be predominantly 150 Hz modulated when the aircraft is to the right of the runway extended centerline.

c) To have a difference in depth of modulation (DDM) equal to zero when the aircraft is on the runway extended centerline.

1.2.1 Description

The single frequency localizer antenna array consists of 14 identical LPD antenna elements, a distribution assembly for RF distribution and monitoring, associated cable raceways, and obstruction lamps. The dual frequency localizer antenna array consists of 14 identical LPD antenna elements, a distribution assembly for RF distribution and monitoring, associated cable raceways, and obstruction lamps.

Figure 1-1. 14-element Localizer Antenna Array

Rev G 1-3 June, 2003

1.2.2 Localizer Antenna

Refer to Figure 1-2. Each LPD antenna is mounted approximately six (6) feet above ground on breakaway masts. Each LPD antenna is approximately nine (9) feet long and four (4) feet wide and consists of seven parallel, horizontally polarized dipole radiators that are fed from a common, balanced transmission line. Each LPD antenna is provided with its own integral monitor that samples the radiated signals and the signal level is approximately 13 dB below the transmitted signal.

Figure 1-2. LPD Antenna Element

1-4 Rev G June, 2003

1.2.2.1 Distribution Assembly (Unit 6)

The distribution assembly is a metal box located at the center of the antenna array. The distribution assembly houses the RF Combiner Assembly, and RF Distribution Assembly, and Cable Fault CCA. The distribution assembly also contains lights and convenience outlets.

1.2.2.2 RF Distribution Assembly (6A1)

The RF Distribution Assembly receives CSB and SBO RF signals from the localizer transmitter and properly divides these signals in phase and amplitude for routing to each LPD antenna. The RF Distribution Assembly is composed of stripline couplers, associated 50-ohm interconnecting lines, and type "N" RF connectors. One of the antenna feed lines contains an in-line phasing detector in series with it. This circuitry provides a detected sample of the RF signal which can be used to check localizer system phasing at the localizer shelter.

1.2.2.3 RF Combiner Assembly (6A2)

The RF Combiner Assembly receives a sample signal from each of the LPD antennas and combines these inputs to form composite CSB and SBO signals for input to the RF Detector Unit at the shelter. The RF Combiner Assembly is composed of stripline hybrids and microstrip interconnections.

1.2.2.4 Cable Fault CCA (6A4)

The Cable Fault CCA detects failures in the antenna feed lines and monitor lines, providing a tone when these lines are properly connected. All lines between the Cable Fault CCA and the Localizer shelter are protected against damage due to lightning strikes.

1.2.3 Misalignment Assembly

The misalignment assembly consists of a switch, which is attached to the 1L antenna mast, and two non-metallic cables, one on each side of the antenna array. This assembly monitors the alignment of the LPD antennas in the array. The cables are connected to all of the antenna rear masts and to a switch-activating lever. Misalignment of any rear mast causes the switch to open.

1.2.4 Trough Kit

The trough kit, or cable raceway, is behind the LPD rear masts and contains the antenna feed lines and monitor cables. The trough kit also contains the system ground wire, and the AC cable for the obstruction lights.

1.2.5 Obstruction Lights

The obstruction lights provide visible indication of the height of the antenna array. There are two lights covered by red lenses at each end of the antenna array.

Rev G 1-5 June, 2003

1.3 EQUIPMENT SPECIFICATIONS DATA

The equipment specification data is listed in Table 1-1.

Table 1-1. Equipment Specifications Data.

Localizer Antenna Array

Equipment Manufacturer Alenia Marconi Systems (ASI), Inc.

Number of Elements 14 log-periodic dipole antennas

Frequency Range 108.0 to 112.0 MHz

Horizontal Coverage ±35°

Vertical Coverage 7°

Coverage Limits >18 NM within ±10° and >10 NM within ±35°

Antenna Distribution Cables Andrews Corp. ¼” and ½” Heliax

Antenna Monitor Cables Andrews Corp. ¼” Heliax

Operating Environment:

Ambient Temperature -50° to +70° C Relative Humidity 5% to 100% Altitude -100 to 15,000 feet (-30m to 4570m) Wind Up to 100 mph (161 KM/h) Ice Up to 1/2 inch (1.27cm)

Power Requirements:

Obstruction Lamps 120VAC, 50/60-Hz Duty Cycle Continuous

Localizer Antenna Element

Input VSWR Less than 1.2:1 Input Connector Type N Female Integral Monitor Coupling 15 dB Nominal Monitor Connector Type N Female Front-to-Back Ratio 28.5 dB

1-6 Rev G

Table 1-1. Equipment Specifications Data (Cont.)

RF Distribution Network

CSB Input Carrier-Plus-Sidebands from Localizer Transmitter

SBO Input Sideband-Only signal from Localizer Transmitter

Antenna Outputs RF Outputs to Antenna Elements

In-line Phasing Detector Antenna Input Samples the following antenna output:

14-element single frequency – 3R 14-element dual frequency – 1R

In-line Phasing Detector Antenna Output Detected feed composite signal (CSB and SBO)

RF Combiner Assembly

Antenna Inputs Sample RF Signal from Antenna Elements

CSB Output Re-combined RF Carrier-Plus-Sideband sample

SBO Output Re-combined RF Sideband-Only sample

1.4 EQUIPMENT AND ACCESSORIES SUPPLIED

Refer to Tables 8-1 and 8-2 for the equipment supplied with each version of the USAF AN/GRN-30 (V) Localizer Replacement Antenna Subsystems.

1.5 EQUIPMENT REQUIRED BUT NOT SUPPLIED

Table 1-2 is a list of all equipment that is not supplied but is required to make the equipment operational. Equivalent equipment may be used.

Table 1-3 is a list of all equipment required for maintenance and troubleshooting tests.

Equivalent equipment may be used.

Rev G 1-7 June, 2003

Table 1-2. Equipment Required for Installation but Not Supplied Qty Description Manufacturer Mfr Part Number AMS (ASI)

Part Number 1 Multimeter Fluke 87 950622-0000 1 Oscilloscope Tektronix TDS210 950259-0000 1 Portable ILS Receiver AMS (ASI), Inc. 002137-0103 002137-0103

14 50 Ohm Type N Male Dummy Loads Bird 5-T-MN 950270-0000

14 50 Ohm Type N Female Dummy Loads Bird 5-T-FN 950271-0000

1 30 dB Attenuator, Type N Bird 5-A-MFN-30 234661-0004

Table 1-3. Equipment Required for Optional Tests in Section 6 and Section 7 Qty Description Manufacturer Mfr Part Number AMS (ASI)

Part Number

1 Vector Voltmeter Hewlett Packard

HP8508A,

w/option 001 950505-0000

1 Vector Voltmeter Accessory Kit

Hewlett Packard HP11570A 950505-0001

1 Grounding Clip Hewlett Packard HP85089A 950505-0002

1 Frequency Counter B&K 1856B 950260-0000 2 30 dB Attenuator, Type N Bird 5-A-MFN-30 234661-0004 1 Directional Coupler RLC M-2565 234617-0000

1-8 Rev G

Rev G 2-1 June, 2003

SECTION 2. TECHNICAL DESCRIPTION

2.1 INTRODUCTION

This section contains system level theory and sub-assembly level theory of operation. A block diagram supports system level theory discussion. Sub-assembly level theory of operation is addressed to off-site maintenance.

Theory of operation for each sub-assembly is explained, when…