Transcript
31R3C2L1 INTRODUCTION TO ANTENNAS AND MAST ASSEMBLIES
31R3C2L1/VG31R3C2L1/VG-1
LESSON OUTLINE • AB 1373/GRC-224 Antenna • AB-1342/GRC-224 Antenna • AB-1339/GRC-224 Antenna • AB-1340/GRC-224 Antenna
31R3C2L1/VG31R3C2L1/VG-2
MAST AB-1373/TRC (1) • From 14 FT. To 100 FT. • Mast Height Is Variable By 4.3 FT. Sections. • Reflector Types: - AS-3414/GRC. - AS-1425/GRC. • Three Major Components: 31R3C2L1/VG31R3C2L1/VG-3
MAST AB-1373/TRC (2) • Mast Assembly: (a) Temperature Range: 1. Operating
40 F to 125 F -40 C to 52 C.
2. Storage
-50 F to 160 F -46 C to 71 C.
(b) Mast Type
31R3C2L1/VG31R3C2L1/VG-4
Vertical-Raising Sectionalized, Tubular.
MAST AB-1373/TRC (3) (C) Mast Section Lengths: 1. Bevel To Bevel
51.6 IN. (131 cm)
2. Total
62.5 (159 cm)
(D) Tripod Height: 1. Legs Collapsed and Retracted....Approximately 51.2 IN. (130 cm). 2. Leg Extended For Normal Deployment Approx. 82 IN. (208 cm). 31R3C2L1/VG31R3C2L1/VG-5
MAST AB-1373/TRC (4) (e) Guy Assembly Lengths:
31R3C2L1/VG31R3C2L1/VG-6
1. Top
148 FT. (45 m).
2. Starbar
134.5 FT. (41 m).
3. Upper Intermediate
115 FT. (35 m).
4. Mid
108 FT. (33 m).
5. Lower Intermediate
90 FT. (27 m).
MAST AB-1373/TRC (5) (F) Extension Cable Length 82 FT. (25 M). (G) Weights: 1. Mast
919 LBS (417.7 kg) Unpacked.
2. Mast Section
9 LBS (4.1 kg).
3. Lifting Winch
44 LBS (20 kg) In Bag.
4. Guy Winch
37 LBS (17 kg) In Bag.
5. Tripod Assembly. 31R3C2L1/VG31R3C2L1/VG-7
97 LBS (44 kg) In Bag.
MAST AB-1373/TRC (6) • Positioner System: (A) Power Required
115V Ac, 3 A Minimum; 60 Hz Normal: Single Phase.
Temperature Ranges: Operating
-50 F to 125 F (-45.6 C to 52 C).
Storage
-70 F to 160 F (-56.7 To 71 C).
Relative Humidity 0 -100 Percent. 31R3C2L1/VG31R3C2L1/VG-8
POSITIONER SYSTEM (1) (1) Positioner Weight 82 LBS (37.3 kg). Height 15 IN. (38 cm). 13.5 IN. (34 cm). Width Depth 16 IN. (41 cm). (2) Controller Weight 3.5 LBS (1.4 kg). Height 4 IN. (10.2 cm). 4 IN. (10.2 cm). Width Depth 8 IN. (20.3 cm). 31R3C2L1/VG31R3C2L1/VG-9
POSITIONER SYSTEM (2) (3) Cable Assemblies Control
W1, 110 FT. (33.53 m) Insulated Multiconductor Cable.
Power
W2, 60 FT. (18.29 m) Insulated 3-Conductor cable.
31R3C2L1/VG31R3C2L1/VG-10
9-METER MAST SUBASSEMBLY
31R3C2L1/VG31R3C2L1/VG-11
TLO PARA 2 CHECK ON LEARNING QUESTION: What Does the Control Modules Subassembly Consist Of? ANSWER:
Power Supply Subsystem, Remote Control Subsystem, and a Baseband Subsystem.
QUESTION: What Is the Purpose of the Mast Subassembly? ANSWER: 31R3C2L1/VG31R3C2L1/VG-12
It Provides the Means for Horizontal And Vertical Antenna Adjustments.
TYPICAL 15-METER MAST INSTALLATION
31R3C2L1/VG31R3C2L1/VG-13
AB-1339/G 15-METER MAST (1) • Weight and Dimensions: Height of Fully Extended Mast With Two Extension Tubes Employed: 49 FT. (15 m). • Length of Fully Retracted Telescopic Mast (Transported) Length 9.5 FT (2.9 m). • Weight: Telescopic Mast Full Bag of Accessories Complete Mast System
31R3C2L1/VG31R3C2L1/VG-14
110 LB (50 kg) 88 LB (40 kg) 198 LB (90 kg)
AB-1339/G 15-METER MAST (2) • Normal Radius to Inner Set of Four Stay Anchors 26 FT. (8 m). • Normal Radius to Outer Set of Four Stay Anchors 33 FT (10 m). • NOTE: Stay Anchors Can Be Moved Outward (Up to Extent Permitted by Full Lengths of Associated Winder Stay Assemblies), As Required to Provide Additional Support If Ground Becomes Soft. 31R3C2L1/VG31R3C2L1/VG-15
AB-1339/G 15-METER MAST (3) • Environment Limits Temperature: - Storage and Transit Operation -40 to + 120 F - -65 To 160 F (-41 to 49 C) - (-54 To 71 C) • Altitude: - Sea Level to 40,000 FT - (Sea Level to 12,192 m) • Wind Speed - (Operational) 31R3C2L1/VG31R3C2L1/VG-16
Sea Level to 10,000 FT (Sea Level to 3050 m) Up to 33 MPH (54 kph)
AB-1339/G 15-METER MAST (4) • Survivable
81 MPH (130 kph)
• Ice Thickness (MAX) 0.5 IN (1.3 cm)
31R3C2L1/VG31R3C2L1/VG-17
AB-1430/G 30-METER MAST (1)
31R3C2L1/VG31R3C2L1/VG-18
AB-1430/G 30-METER MAST (2) • Weight and Dimensions 98 FT (30 m) Erected Height 854 LB (388 kg) Weight (Transit) • Environment Requirements Temperature: Storage and Transit Operation - 40 to 120 F -65 to 160 F (-40 to 50 C) (-54 to 70 C) • Top Load Weight Capacity Two Antennas Installed..... 55 LB (25 kg) at Each Antenna. Effective Wind Load Area Maximum (Horizontal) Capacity. 31R3C2L1/VG31R3C2L1/VG-19
AB-1430/G 30-METER MAST (3) • Two Antennas Installed 4.3 FT (0.4m ) Operational. • Wind Speed (Maximum), Operational 62 MPH (100 km/h). • Wind Gusts 83 MPH (130 km/h). • Horizontal Deflection Angle +4 Maximum (At Maximum Operational Wind Speed). • Ice Loading (Maximum) 1/2 IN. (1.25 Cm) Radial On Any Surface.
31R3C2L1/VG31R3C2L1/VG-20
AB-1430/G 30-METER MAST (4) • NOTE: Under Icing and High Wind Conditions, the Survivability Limit of the Mast May Be Degraded. During Such Conditions, Personnel Should Remain Outside the Circular Perimeter Defined by the Outer Pickets.
31R3C2L1/VG31R3C2L1/VG-21
SUMMARY STATEMENT In This Lesson We Discussed the Capabilities of the Various Mast and the Type of Antennas They Support. We Also Discussed the Individual Components That Make up the Mast. In the Next Lesson, We Are Going to Discuss Antenna and Mast Installation Procedures.
31R3C2L1/VG31R3C2L1/VG-22
