How to distinguish high frequency and low frequency

How to distinguish high frequency and low frequency, Total:60 items.

The international standard classification for "How to distinguish high frequency and low frequency" includes: .

The Chinese standard classification for "How to distinguish high frequency and low frequency" includes: .

Professional Standard - Electron

SJ/Z 9142.2-1987 Minimum performance requirement for high fidelity audio equipment--Part 2: FM radio tuners
SJ 20249-1993 Verification reguation of model BP28A LF spectrum analyzers

Professional Standard - Post and Telecommunication

YD/T 647-1994 Quality grading criteria of HF and LF noise testers

Group Standards of the People's Republic of China

T/ZJSEE 0021.3-2024 Flexible low-frequency transmission Part 3: Maintenance specifications for low-frequency primary equipment of frequency converter stations

Xizang Provincial Standard of the People's Republic of China

DB54/T 0291-2023 Architectural requirements for smart video systems in plateau areas

未注明发布机构

DIN 45680 E:2013-09 Measurement and assessment of low-frequency noise immissions in the neighbourhood
DIN 45680 E:2011-08 Measurement and assessment of low-frequency noise immissions in the neighbourhood

SCC

MIL MIL-R-28887-1984 RADIO GROUP, VLF, LF, MF, AND HF
BS BIP 3033:2005 How to lead OH&S risk management - Video and CD
DANSK DS/EN 60603-14:1999 Connectors for frequencies below 3 MHz for use with printed boards - Part 14: Detail specification for circular connectors for low-frequency audio and video applications such as audio, video and audio-visual equipment
CEI EN 60603-14:2000 Connectors for frequencies below 3 MHz for use with printed boards - Part 14: Detail specification for circular connectors for low-frequency audio and video applications such as audio, video and audio-visual equipment
MIL MIL-R-28886A-1985 RECEIVER, LOW FREQUENCY, MEDIUM FREQUENCY, AND HIGH FREQUENCY COMMUNICATIONS (SUPERSEDING MIL-R-28886)

International Telecommunication Union (ITU)

ITU-R BS.560-4-1997 Radio-Frequency Protection Ratios in LF MF and HF Broadcasting
ITU-R BS.561-2-1986 Definitions of Radiation in LF MF and HF Broadcasting Bands - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.559-2-1990 Objective Measurement of Radio-Frequency Protection Ratios in LF MF and HF Broadcasting - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.639-1986 Necessary Bandwidth of Emission in LF MF and HF Broadcasting - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.561-2 SPANISH-1986 DEFINITIONS OF RADIATION IN LF, MF AND HF BROADCASTING BANDS
ITU-R BS.561-2 FRENCH-1986 DEFINITIONS OF RADIATION IN LF, MF AND HF BROADCASTING BANDS
ITU-R QUESTION 51/6-2000 Sky-wave reception in LF MF and HF broadcasting
ITU-R BS.560-4 SPANISH-1997 Radio-frequency protection ratios in LF, MF and HF broadcasting
ITU-R BS.559-2 SPANISH-1990 OBJECTIVE MEASUREMENT OF RADIO-FREQUENCY PROTECTION RATIOS IN LF, MF AND HF BROADCASTING
ITU-R BS.560-4 FRENCH-1997 Radio-frequency protection ratios in LF, MF and HF broadcasting
ITU-R BS.559-1990 Objective measurement of radio-frequency protection ratios in LF, MF and HF broadcasting
ITU-R BS.559-2 FRENCH-1990 OBJECTIVE MEASUREMENT OF RADIO-FREQUENCY PROTECTION RATIOS IN LF, MF AND HF BROADCASTING
ITU-R REPORT BS.458-5-1990 Characteristics of systems in LF, MF and HF broadcasting
ITU-R INFORME BS.458-5 SPANISH-1990 Characteristics of systems in LF, MF and HF broadcasting
ITU-R BS.639 SPANISH-1986 Necessary bandwidth of emission in LF, MF and HF broadcasting
ITU-R BS.639 FRENCH-1986 Necessary Bandwidth of Emission in LF MF and HF Broadcasting - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.598-1 FRENCH-1990 Factors Influencing the Limits of Amplitude-Modulation Sound-Broadcasting Coverage in Band 6 (MF) - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.498-2-1990 Ionospheric Cross-Modulation in the LF and MF Broadcasting Bands - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.598-1 SPANISH-1990 FACTORS INFLUENCING THE LIMITS OF AMPLITUDE-MODULATION SOUND-BROADCASTING COVERAGE IN BAND 6 (MF)
ITU-R BS.598-1-1990 Factors Influencing the Limits of Amplitude-Modulation Sound-Broadcasting Coverage in Band 6 (MF) - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R REPORT SM.2158-2-2011 Impact of power line telecommunication systems on radiocommunication systems operating in the LF, MF, HF and VHF bands below 80 MHz
ITU-R BS.597-1 SPANISH-1986 CHANNEL SPACING FOR SOUND BROADCASTING IN BAND 7 (HF)
ITU-R INFORME SM.2158-2 SPANISH-2011 Impact of power line telecommunication systems on radiocommunication systems operating in the LF, MF, HF and VHF bands below 80 MHz
ITU-R BS.597-1 FRENCH-1986 Channel Spacing for Sound Broadcasting in Band 7 (HF) - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.498-2 SPANISH-1990 IONOSPHERIC CROSS-MODULATION IN THE LF AND MF BROADCASTING BANDS
ITU-R BS.498-2 FRENCH-1990 IONOSPHERIC CROSS-MODULATION IN THE LF AND MF BROADCASTING BANDS
ITU-R P.1812-3-2013 A path-specific propagation prediction method for point-to-area terrestrial services in the VHF and UHF bands
ITU-R RRC.3-1976 Final acts of the Regional Administrative LF/MF Broadcasting Conference (Regions 1 and 3) Geneva, 1975
ITU-R RRC.3 FRENCH-1976 Final acts of the Regional Administrative LF/MF Broadcasting Conference (Regions 1 and 3) Geneva, 1975
ITU-R RRC.3 SPANISH-1976 Final acts of the Regional Administrative LF/MF Broadcasting Conference (Regions 1 and 3) Geneva, 1975
ITU-R BS.597-1-1986 Channel Spacing for Sound Broadcasting in Band 7 (HF) - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R P.373-9-2013 Definitions of maximum and minimum transmission frequencies

Korean Agency for Technology and Standards (KATS)

KS D 1945-1995(2000) DETERMINATION OF IRON IN TUNGSTEN AND MOLYBDENUM MATERIAL FOR ELECTRIC LAMPS AND TUBES
KS K 0150-2007(2012) Test method for dispersion stability of disperse dyes at high temperature
KS C IEC 60581-13-2003(2008) High fidelity audio equipment and systems：Minimum performance requirements－Part 13：High fidelity systems for use in vehicles (for example, motor cars)：FM radio tuner units

German Institute for Standardization

DIN EN 60603-14:1999 Connectors for frequencies below 3 MHz for use with printed boards - Part 14: Detail specification for circular connectors for low-frequency audio and video applications such as audio, video and audio-visual equipment (IEC 60603-14:1998); German version E
DIN EN 60603-14:1999-11 Connectors for frequencies below 3 MHz for use with printed boards - Part 14: Detail specification for circular connectors for low-frequency audio and video applications such as audio, video and audio-visual equipment (IEC 60603-14:1998); German versio...
DIN 45680:1997-03 Measurement and assessment of low-frequency noise immissions in the neighbourhood / Note: To be replaced by DIN 45680 (2011-08), DIN 45680 (2013-09), DIN 45680 (2020-06).

GSO

BH GSO IEC 60603-14:2016 Connectors for frequencies below 3 MHz for use with printed boards - Part 14: Detail specification for circular connectors for low-frequency audio and video applications such as audio, video and audio-visual equipment
OS GSO IEC 60603-14:2014 Connectors for frequencies below 3 MHz for use with printed boards - Part 14: Detail specification for circular connectors for low-frequency audio and video applications such as audio, video and audio-visual equipment
GSO IEC 60603-14:2014 Connectors for frequencies below 3 MHz for use with printed boards - Part 14: Detail specification for circular connectors for low-frequency audio and video applications such as audio, video and audio-visual equipment

ES-UNE

UNE-EN 60603-14:1999 Connectors for frequencies below 3 MHz for use with printed boards -- Part 14: Detail specification for circular connectors for low-frequency audio and video applications such as audio, video and audio-visual equipment. (Endorsed by AENOR in November o...

Danish Standards Foundation

DS/EN 60603-14:2000 Connectors for frequencies below 3 MHz for use with printed boards - Part 14: Detail specification for circular connectors for low-frequency audio and video applications such as audio, video and audio-visual equipment

Association Francaise de Normalisation

NF EN 60603-14:1999 Connecteurs pour fréquences inférieures à 3 MHz pour utilisation avec cartes imprimées - Partie 14 : spécification particulière pour les connecteurs circulaires pour applications audio et vidéo en basse fréquence tels que les équipements audio...

AENOR

UNE 20636-11:1986 HIGH FIDELITY AUDIO EQUIPMENT AND SYSTEMS. MINIMUM PERFORMANCE REQUIREMENTS. HIGH FIDELITY SYSTEMS FOR USE VEHICLES (FOR EXAMPLE, MOTOR CARS)

Standard Association of Australia （SAA）

AS 3516.1:1988 Siting of radiocommunications facilities - LF, MF and HF transmitting and HF receiving facilities

RU-GOST R

GOST 27694-1988 Integrated circuits. Low-, intermediate- and high-frequency amplifiers. Methods for measuring electric parameters

IET - Institution of Engineering and Technology

LOW-PWR HF MICROELEC-1996 Low-power HF Microelectronics: a unified approach

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