Standard
UPDATE AVAILABLE
AS 1417:2015
[Superseded]Receiving antennas for radio and television in the VHF and UHF broadcast bands — Design, manufacture and performance of outdoor terrestrial television antennas
This Standard specifies requirements for outdoor terrestrial TV antennas for the reception of digital television. It provides specifications for minimum electrical performance and aspects of mechanical design for reception of terrestrial digital television broadcasts. This Standard also provides a number of alternate measurement techniques that may be used to determine the performance of the antenna, along with information and guidance on their use.
Published: 13/11/2015
Pages: 44
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Application
1.3 Referenced documents
1.4 Definitions
2 Electrical specifications
2.1 General
2.2 Antenna suitability for given reception areas
2.3 Operating frequency range or bandwidth
2.3.1 General
2.3.2 Channel block plan
2.3.3 Use of channel blocks and exceptions
2.3.4 Rejection of out-of-band signals
2.4 Antenna gain
2.4.1 Gain specification
2.4.2 Beamwidth (3 dB)
2.4.3 Front-to-back (F/B) ratio
2.4.4 Antenna patterns (Directivity)
2.4.5 Front-to-sidelobe ratio
2.5 Cross-polarization discrimination
2.6 Antenna output connector
2.6.1 General
2.6.2 Antenna baluns
2.6.3 Antenna impedance and (RL)
2.7 Antenna performance
3 Mechanical specifications
3.1 General
3.2 Antenna wind load pressures and forces
3.3 Static loads
3.4 Weight
3.5 Dimensions
3.6 Hardware and fittings
3.7 Terminal device robustness
3.8 Environmental requirements
3.8.1 Corrosion resistance
3.8.2 Other physical properties
3.8.3 Weatherproofing
4 Recommended specification sheet format
4.1 General
4.2 Electrical specifications
Appendix A
A1 General
A2 Comparison method—Measurements using off-air DTV transmissions
A2.1 General
A2.2 Test set-up
A2.2.1 Equipment
A2.2.2 Determination of test location
A2.3 Gain comparison measurement
A2.4 F/B ratio measurement
A3 Factors affecting measurement accuracy
A3.1 General
A3.2 Test set-up
A3.3 Minimizing multipath reflections
A3.4 Antenna separation distance
A3.4.1 General
A3.4.2 Near field and far field boundaries
A3.4.3 Mutual coupling effects
A4 Measurements using the substitution method
A4.1 General
A4.2 Equipment
A4.2.1 Transmit antenna (Tx)
A4.2.2 Reference antenna (RA)
A4.2.3 RF signal generator and level measurement equipment
A4.3 Gain measurement
A4.3.1 General
A4.3.2 Test method
A4.4 (F/B) ratio measurement
A4.5 Half-power beamwidth and directional pattern measurement
A4.5.1 General
A4.5.2 Test method
A4.6 Horizontal radiation pattern (HRP) measurement
A4.7 Cross-polarization discrimination
A4.7.1 General
A4.7.2 Test method
A5 Measurements using the reciprocity method
A5.1 General
A5.2 Test method
A6 Antenna return loss (RL) measurement
Appendix B
Appendix C
Appendix D
Appendix E
E1 General
E2 The digital cliff effect
E3 Receiver input overload
E4 Digital error correction systems
E5 Checking a DTV signal with a signal quality meter
E5.1 General
E5.2 Assessment of margin above digital cliff
E6 Digital reception margin
E7 Systems with amplifiers
E8 C/N thresholds and signal levels
E9 Calculation of the likely signal margin in prime and fringe areas
E10 Determining antenna type
E11 Antenna gain descriptions myswitch cross-reference
Appendix F
F1 F-type connector—General
F2 General recommendations
F3 Recommendations for connector long-term reliability
Cited references in this standard
[Superseded]
Coaxial cable and optical fibre systems for the RF distribution of digital television, radio and in-house analog television signals in single and multiple dwelling installations
[Current]
Digital television — Terrestrial broadcasting, Part 1: Characteristics of digital terrestrial television transmissions
[Current]
Digital television — Requirements for receivers for VHF/UHF DVB-T television broadcasts including ancillary services
Content history
[Current]
[Superseded]
[Superseded]
DR AS 1417.1:2014
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