TABLE OF CONTENTS
Page
General Description ...............................….............................................................................1-1
Specifications …......................................................................................................................1-1
CHAPTER 2 - PRE-ASSEMBLY
O
A
O
2 1
Preparation for Assembly .....................................................................................................2-1
Discoverer 7-2 Disassembly Information .............................................................................2-1
CHAPTER 3 - ASSEMBLY
Assembly of the Boom-to-Mast Brackets and Boom.........................................................`..3-1
Element-to-Boom Brackets.....................................................................................................3-1
Assembly of the Driven Element...........................................................................................3-3
Installation of Tubing Clamps ................................................................................................3-5
Assembly of the Reflector Element .......................................................................................3-7
Assembly of the Director Element.........................................................................................3-8
Driven Element, Reflector and Director Linear-Loading Wire Assembly.......................... 3-11
Beta Match Assembly.......................................................................................................... 3-14
Lightning Protection............................................................................................................ 3-15
Attachment of Feedline ...................................................................................................... 3-15
Boom Support Assembly...........…....................................................................................... 3-15
CHAPTER 4 - INSTALLATION
Installation............................................................................................................................ 4-17
Installation on a Crank-Up Tower........................................................................................ 4-17
Attaching the Antenna to the Mast ...................................................................................... 4-17
Other Types of Towers ........................................................................................................ 4-18
Operation ............................................................................................................................. 4-19
Maintenance....................................................................................................................... 4-19
VSWR Calculations .......................................……………………………………………...4-19
CHAPTER 5 - SERVICE
Service Information ............................................................................................................. 5-21
Attachment .......................................................................................................................... 5-22
Parts List.............................................................................................................................. 5-23
Converting English Measurements to Metric..............…………………………………......5-25
Summary of Contents for DIR-73
Page 9: ...Figure 1 Assembly of Boom Tubes to Casting to Boom Bracket and Boom to Bracket Clamp ...
Page 11: ......
Page 13: ......
Page 16: ...Figure 8 Assembly of the Director Element ...
Page 17: ...Figure 9 Overall View of Antenna ...
Page 19: ...Figure 11 Attachment of Linear Loading Wire Assembly Near Insulator ...
Page 20: ...Figure 12 Identification of Linear Loading Wires LLW ...
Page 23: ...Figure 14 Boom Support Assembly ...
