SIST-TS CLC/TS 50083-2-3:2019

Cable networks for television signals, sound Signals and interactive services - Part 2-3: LTE (4G) Interference Mitigation Filters

This Technical Specification provides requirements to passive filters intended to reduce RF interference from LTE Base Stations (LTE-BS) and LTE User Equipment (LTE-UE) to receiving equipment and cable distribution systems of broadcast DVB-T and DVB-T2 signals in the VHF and UHF bands. While primarily intended to be used with VHF/UHF DVB-T and DVB-T2 receivers and signal distribution systems, filters can also be useful for mitigation of interference to VHF FM or DAB radio.

Kabelnetze für Fernsehsignale, Tonsignale und interaktive Dienste - Teil 2-3: LTE (4G) Filter zur Vermeidung von Störungen

Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion sonore et services interactifs - Partie 2-3 : Filtres d'atténuation du brouillage pour les réseaux LTE (4G)

Kabelska omrežja za televizijske signale, zvokovne signale in interaktivne storitve - 2-3. del: Filter LTE (4G) za preprečevanje motenj

Ta tehnična specifikacija določa zahteve za pasivne filtre za zmanjšanje RF-motenj pri sprejemni opremi in kabelskih razdelilnih sistemih za radiodifuzijo signalov DVB-T in DVB-T2 v pasovih VHF in UHF, ki jih povzročajo bazne postaje LTE (LTE-BS) in uporabniška oprema LTE (LTE-UE). Medtem ko se filtri uporabljajo predvsem s sprejemniki VHF/UHF DVB-T in DVB-T2 ter sistemi za razdelitev signalov, so lahko uporabni tudi za preprečevanju motenj pri radijskih signalih VHF FM ali DAB.

General Information

• Status: Published
• Publication Date: 05-Dec-2018
• ICS: 33.060.40 - Cabled distribution systems
• Technical Committee: AVM - Audio, video and multimedia systems and equipment
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 23-Mar-2018
• Due Date: 28-May-2018
• Completion Date: 06-Dec-2018
• Directive: Harmonized Standard2014/30/EU - Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)
• Ref Project: CLC/TS 50083-2-3:2018 - Cable networks for television signals, sound Signals and interactive services - Part 2-3: LTE (4G) Interference Mitigation Filters

Overview

SIST-TS CLC/TS 50083-2-3:2019 is a Technical Specification developed by the CENELEC (CLC) focusing on cable networks for television signals, sound signals, and interactive services. Specifically, this part addresses the requirements for passive LTE (4G) interference mitigation filters. The primary aim is to minimize radio frequency (RF) interference from LTE Base Stations (LTE-BS) and LTE User Equipment (LTE-UE) affecting broadcast DVB-T and DVB-T2 signals in the VHF and UHF bands. While intended mainly for television signal distribution systems, these LTE filters can also support the reduction of interference in VHF FM and DAB radio systems.

Key Topics

• Passive LTE Interference Filters: The standard defines requirements for passive devices across various cable distribution scenarios to block unwanted LTE signals and protect TV reception quality.
• Performance Characteristics:
  • Pass-band and Stop-band: Filters must allow through VHF and UHF broadcast channels while strongly attenuating LTE frequencies, especially in the 791-821 MHz (LTE-BS) and 832-862 MHz (LTE-UE) ranges.
  • Filter Classes: It specifies three classes of LTE filters suitable for professional, consumer, and typical master antenna TV (MATV) systems.
• Installation Conditions & Connections:
  • Requirements for connectors, protective bonding, mechanical robustness, environmental protection (IP54 for outdoor use), and compliance with EMC standards.
• Information Requirements: Guidance on the information to be provided by manufacturers or vendors, supporting correct application and installation by end-users.

Applications

• Broadcast TV Reception: Ensures reliable DVB-T and DVB-T2 reception in residential, commercial, and communal cable systems by minimizing LTE interference.
• FM and DAB Radio: Filters are also applicable where LTE signals may disrupt VHF FM or DAB radio equipment, enhancing their operational reliability.
• Cable Network Infrastructure:
  • Professional installations (with distribution amplifiers and complex headends).
  • Consumer-level setups (single or small group receivers in homes).
  • MATV systems found in multiple dwelling units or shared buildings.
• Electromagnetic Compatibility (EMC): The standard helps cable network operators and installers maintain compliance with electromagnetic compatibility regulations.
• Outdoor and Indoor Usage: The specified filters cover both environmental scenarios, ensuring robust performance whether installed internally or externally.

Related Standards

• EN 50083-2:2012 - Cable networks for television signals, sound signals and interactive services - Part 2: Electromagnetic compatibility for equipment.
• EN 60728 series - Standards for safety and performance in cable distribution networks for television, sound, and interactive services.
• EN 60529:1991 (IP Code) - Classification for degrees of protection against dust and water ingress.
• EN 61169-2 & EN 61169-24 - Specifications for RF coaxial connectors used in cable networks.

Practical Value

• Improved Service Reliability: Correct application of LTE filters ensures uninterrupted viewing and listening experiences for customers, even in areas with strong LTE signals.
• Simplified Regulatory Compliance: Helps operators, installers, and manufacturers meet national and international EMC requirements for cable TV and radio distribution equipment.
• Versatile Integration: Thanks to standardized connectors and environmental ratings, these filters can be installed in diverse network environments with confidence in long-term performance.
• Manufacturer Guidance: Clear documentation and marking requirements support proper product selection and installation by both professionals and consumers.

Keywords: cable television filter, LTE interference, DVB-T2 protection, RF filter standard, CLC/TS 50083-2-3, cable network EMC compliance, MATV LTE filter, passive broadcast filter, VHF UHF cable signal protection, 4G interference mitigation

For more robust and LTE-resilient cable networks and radio systems, adherence to SIST-TS CLC/TS 50083-2-3:2019 is essential for installers, manufacturers, and operators.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2019
.DEHOVNDRPUHåMD]DWHOHYL]LMVNHVLJQDOH]YRNRYQHVLJQDOHLQLQWHUDNWLYQHVWRULWYH
GHO)LOWHU/7(*]DSUHSUHþHYDQMHPRWHQM
Cable networks for television signals, sound Signals and interactive services - Part 2-3:
LTE (4G) Interference Mitigation Filters
Kabelnetze für Fernsehsignale, Tonsignale und interaktive Dienste - Teil 2-3: LTE (4G)
Filter zur Vermeidung von Störungen
Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion
sonore et services interactifs - Partie 2-3 : Filtres d'atténuation du brouillage pour les
réseaux LTE (4G)
Ta slovenski standard je istoveten z: CLC/TS 50083-2-3:2018
ICS:
33.060.40 Kabelski razdelilni sistemi Cabled distribution systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION CLC/TS 50083-2-3

SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
March 2018
ICS 33.060.40
English Version
Cable networks for television signals, sound Signals and
interactive services - Part 2-3: LTE (4G) Interference Mitigation
Filters
Réseaux de distribution par câbles pour signaux de Kabelnetze für Fernsehsignale, Tonsignale und interaktive
télévision, signaux de radiodiffusion sonore et services Dienste - Teil 2-3: LTE (4G) Filter zur Vermeidung von
interactifs - Partie 2-3 : Filtres d'atténuation du brouillage Störungen
pour les réseaux LTE (4G)
This Technical Specification was approved by CENELEC on 2017-12-25.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly
at national level in an appropriate form. It is permissible to keep conflicting national standards in force.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. CLC/TS 50083-2-3:2018 E

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviations . 5
3.1 Terms and definitions . 5
3.2 Abbreviations . 6
4 LTE Filter Characteristics . 6
4.1 General . 6
4.2 Pass-band and stop-band of a LTE filter (800 MHz band) . 6
4.3 Types of standard for a LTE filter . 7
4.4 LTE filter specifications . 7
4.5 Connections, EMC, environmental and other factors . 8
4.5.1 Connections . 8
4.5.2 EMC – Screening effectiveness . 8
4.5.3 DC and 50 Hz line power considerations . 8
4.5.4 Climate and operating temperature range . 8
4.5.5 Drop test . 9
4.5.6 Fixings . 9
4.6 Information to be supplied by the manufacturer or responsible vendor . 9
Annex A (informative) Signal protection from LTE signals . 10
A.1 Frequency allocation of LTE signals in the 800 MHz band . 10
A.2 LTE-UE field strength in the 800 MHz band . 10
A.3 LTE-BS field strength in the 800 MHz band . 11

European foreword
This document (CLC/TS 50083-2-3:2018) has been prepared by CLC/TC 209 “Cable networks for television
signals, sound signals and interactive services”.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Introduction
Standards and deliverables of EN 60728 series and EN 50083 series deal with cable networks including
equipment and associated methods of measurement for headend reception, processing and distribution of
television and sound signals and for processing, interfacing and transmitting all kinds of data signals for
interactive services using all applicable transmission media. These signals are typically transmitted in
networks by frequency-multiplexing techniques.
This includes for instance:
a) regional and local broadband cable networks;
b) extended satellite and terrestrial television distribution systems;
c) individual satellite and terrestrial television receiving systems;
and all kinds of equipment, systems and installations used in such cable networks, distribution and receiving
systems.
The extent of this standardization work is from the antennas and/or special signal source inputs to the
headend or other interface points to the network up to the terminal input of the customer premises
equipment.
The standardization work will consider coexistence with users of the RF spectrum in wired and wireless
transmission systems.
The standardization of any user terminals (i.e. tuners, receivers, decoders, multimedia terminals etc.) as well
as of any coaxial, balanced and optical cables and accessories thereof is excluded.
1 Scope
This Technical Specification provides requirements to passive filters intended to reduce RF interference from
LTE Base Stations (LTE-BS) and LTE User Equipment (LTE-UE) to receiving equipment and cable
distribution systems of broadcast DVB-T and DVB-T2 signals in the VHF and UHF bands. While primarily
intended to be used with VHF/UHF DVB-T and DVB-T2 receivers and signal distribution systems, filters can
also be useful for mitigation of interference to VHF FM or DAB radio.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 50083-2:2012, Cable networks for television signals, sound signals and interactive services - Part 2:
Electromagnetic compatibility for equipment
EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)
EN 60728-11, Cable networks for television signals, sound signals and interactive services – Part 11: Safety
(IEC 60728-11)
EN 61169-2, Radio-frequency connectors - Part 2: Sectional specification - Radio frequency coaxial
connectors of type 9,52 (IEC 61169-2)
EN 61169-24, Radio-frequency connectors - Part 24: Sectional specification - Radio frequency coaxial
connectors with screw coupling, typically for use in 75 ohm cable networks (type F) (IEC 61169-24)
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
bandwidth
width of a frequency band over which a given characteristic of an equipment or transmission channel does
not differ from its reference value by more than a specified amount or ratio
3.1.2
pass-band
frequency band throughout which the attenuation is less than a specified value
3.1.3
stop-band
frequency band throughout which the attenuation is greater than a specified value
3.2 Abbreviations
For the purposes of this document, the following abbreviations apply.
BS Base Station
DC direct current
EMC electromagnetic compatibility
LTE long term evolution
RF radio frequency
MATV Master Antenna Television
TV television
UHF ultra high frequency
UE user eqipment
VHF very high frequency
4 LTE Filter Characteristics
4.1 General
To comply with this specification a filter shall pass a range of frequencies (the pass-band) which includes a
number of VHF and UHF TV channels and shall attenuate a range of LTE frequencies (the stop-band). In all
cases the stop-band lies above the pass-band.
4.2 Pass-band and stop-band of a LTE filter (800 MHz band)
Pass-band (t
...