Low frequency (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Low frequency" in English language version.

refsWebsite

Global rank English rank

9web.archive.org

1^st place

2books.google.com

3^rd place

2arrl.org

8,569^th place

5,659^th place

2ecfr.gov

5,608^th place

3,261^st place

1itu.int

986^th place

803^rd place

1fas.org

505^th place

410^th place

1bbc.co.uk

8^th place

10^th place

1wireless.org.uk

low place

1ofcom.org.uk

4,546^th place

2,560^th place

1archive.today

14^th place

1dwd.de

3,307^th place

3,959^th place

1ndblist.info

low place

archive.today

"DWD Sendeplan". Archived from the original on 30 July 2012. Retrieved 8 January 2008.

arrl.org

Regulatory Band Chart (PDF) (chart / graphic) (11×17″ color ed.). Newington, CT: American Radio Relay League. 22 September 2017. Archived (PDF) from the original on 11 November 2020. Retrieved 26 November 2020.
"G3AQC's signal spans the Atlantic on 73 kHz!". The ARRL Letter. Newington, CT: American Radio Relay League. 30 November 2001. Archived from the original on 12 January 2014. Retrieved 12 January 2014.

bbc.co.uk

"The Human Button". Today. 2 December 2008. BBC. BBC Radio 4. Archived from the original on 3 February 2011. Retrieved 6 August 2011.

books.google.com

US Federal Standard 1037B: Telecommunications, Glossary of Telecommunications Terms. Office of Technology Standards, General Services Administration. 3 June 1991. pp. S-18.
Seybold, John S. (2005). Introduction to RF Propagation. John Wiley and Sons. pp. 55–58. ISBN 0471743682. Archived from the original on 16 April 2021. Retrieved 30 November 2020 – via Google books.

dwd.de

"DWD Sendeplan". Archived from the original on 30 July 2012. Retrieved 8 January 2008.

ecfr.gov

"§ 15.217 Operation in the band 160–190 kHz (47 CFR 15.217)". Part 15 — Radio frequency devices. ecfr.gov (Report). The Electronic Code of Federal Regulations. 47 CFR 15.217 (47 CFR 15.206). Retrieved 17 March 2024.^{[failed verification]} Cited section 47 CFR 15.206 not present / removed: section id §15.205 skips to §15.207 .
"Part 15 — Rado frequency devices". Federal Register. Archived from the original on 26 July 2014. Retrieved 21 July 2014.

fas.org

"Very Low Frequency (VLF)". United States Nuclear Forces. fas.org. 1998. Archived from the original on 27 December 2007. Retrieved 9 January 2008.

itu.int

Final Acts WRC-15 (PDF). World Radiocommunication Conference. Geneva, Switzerland: International Telecommunications Union. 2015. p. 4. Retrieved 12 January 2025.

ndblist.info

Gale, Alan (G4TMV) (2011). World DGPS database for DXers (PDF) (Report). 4.6. Archived from the original (PDF) on 21 July 2011. Retrieved 14 January 2008 – via ndblist.info.{{cite report}}: CS1 maint: numeric names: authors list (link)

ofcom.org.uk

"UK Spectrum Strategy 2002" (Press release). Ofcom. 16 September 2016. Archived from the original on 30 September 2007. Retrieved 5 June 2006.

web.archive.org

Seybold, John S. (2005). Introduction to RF Propagation. John Wiley and Sons. pp. 55–58. ISBN 0471743682. Archived from the original on 16 April 2021. Retrieved 30 November 2020 – via Google books.
"Very Low Frequency (VLF)". United States Nuclear Forces. fas.org. 1998. Archived from the original on 27 December 2007. Retrieved 9 January 2008.
"The Human Button". Today. 2 December 2008. BBC. BBC Radio 4. Archived from the original on 3 February 2011. Retrieved 6 August 2011.
Regulatory Band Chart (PDF) (chart / graphic) (11×17″ color ed.). Newington, CT: American Radio Relay League. 22 September 2017. Archived (PDF) from the original on 11 November 2020. Retrieved 26 November 2020.
"QSO ZL / UA0 on 136 kHz". The World of LF. wireless.org.uk. Archived from the original on 29 September 2007. Retrieved 1 June 2006.
"UK Spectrum Strategy 2002" (Press release). Ofcom. 16 September 2016. Archived from the original on 30 September 2007. Retrieved 5 June 2006.
"G3AQC's signal spans the Atlantic on 73 kHz!". The ARRL Letter. Newington, CT: American Radio Relay League. 30 November 2001. Archived from the original on 12 January 2014. Retrieved 12 January 2014.
"Part 15 — Rado frequency devices". Federal Register. Archived from the original on 26 July 2014. Retrieved 21 July 2014.
Gale, Alan (G4TMV) (2011). World DGPS database for DXers (PDF) (Report). 4.6. Archived from the original (PDF) on 21 July 2011. Retrieved 14 January 2008 – via ndblist.info.{{cite report}}: CS1 maint: numeric names: authors list (link)

wireless.org.uk

"QSO ZL / UA0 on 136 kHz". The World of LF. wireless.org.uk. Archived from the original on 29 September 2007. Retrieved 1 June 2006.