samedi 14 juin 2025

The history of the biggest radio receiver brands for SWL

On my blog One i have written articles about 20 famous brands of radio receivers like Yaesu, Kenwood, Icom, Sony, Sanyo and 15 other radio brands !!!

This is the links to these articles.

Example SONY

https://icomjapan.blogspot.com/search/label/SONY

Other brands of radio receivers

HEATHKIT

https://chinaradiosswl.blogspot.com/2025/01/nice-sw-radio-receivers-heathkit-from.html

https://icomjapan.blogspot.com/2023/06/free-pdf-book-heathkit-guide-to-amateur.html

BARLOW WADLEY

https://icomjapan.blogspot.com/2023/07/strange-and-rare-radio-receiver-from.html

COLLINS

https://icomjapan.blogspot.com/2023/06/history-of-cadillac-radios-collins.html

DRAKE

https://icomjapan.blogspot.com/2023/07/when-drake-was-brand-for-swl-and-ham.html

GRUNDIG

https://icomjapan.blogspot.com/2023/07/when-grundig-was-king-in-europe.html

https://icomjapan.blogspot.com/2023/07/the-boy-series-of-grundig-radio.html

HALLICRAFTER

https://icomjapan.blogspot.com/2023/07/hallicrafter-company-from-ww2-to-60s.html

ICOM

https://icomjapan.blogspot.com/search/label/ICOM

ITT SCHAUB LORENZ

https://icomjapan.blogspot.com/search/label/ITT%20Schaub-Lorenz

JRC

https://icomjapan.blogspot.com/search/label/JRC

KENWOOD

https://icomjapan.blogspot.com/search/label/KENWOOD

LAS

https://icomjapan.blogspot.com/2023/10/las-by-lazlo-szakvary-f5las.html

LOWE

https://icomjapan.blogspot.com/search/label/LOWE

MICS RADIO

https://icomjapan.blogspot.com/2024/06/mics-radio-made-in-france.html

NATIONAL PANASONIC

https://icomjapan.blogspot.com/2023/08/national-panasonic-radio-receivers-from.html

PHILIPS

https://icomjapan.blogspot.com/2023/08/the-history-of-philips-radio-receivers.html

PIZON BROS

https://icomjapan.blogspot.com/2023/08/pizon-bros.html

REALISTIC RADIOSHACK

https://icomjapan.blogspot.com/2023/06/history-of-radios-stores-radioshack-and.html

SANYO

https://icomjapan.blogspot.com/search/label/SANYO

YAESU

https://icomjapan.blogspot.com/2023/06/history-of-yaesu-receivers.html

ZENITH

https://icomjapan.blogspot.com/2023/07/the-story-of-zenith-trans-oceanic.html

HITACHI

https://chinaradiosswl.blogspot.com/2024/04/hitachi-radios-from-japan.html

My receivers in 45 years

https://chinaradiosswl.blogspot.com/2024/04/my-japanese-radio-receiver-1981-to-2024.html

You are an SWL or an amateur radio operator ? Dont forget please the SSB SWL contest 2025.We have 16 sponsors !!!!!

https://chinaradiosswl.blogspot.com/2025/02/ssb-swl-contest-2025-rules.html?spref=bl

Thank you to Serge F5SN from REF 39

https://ref39.r-e-f.org/topic/index.html

Thank you to The SWLing post

https://swling.com/blog/2025/06/franks-collection-of-classic-receiver-notes/

dimanche 18 mai 2025

Who is the patron saint of radio amateurs?

I was surprised to discover that radio amateurs have their own saint: Father Massimiliano Kolbe, call sign SP3RN. Kolbe is also the patron saint of journalists and political prisoners.

Maximilian Maria Kolbe, born Rajmund Kolbe (Zduńska Wola, January 8, 1894 – Auschwitz, August 14, 1941), was a Polish priest and Franciscan friar who offered to take the place of a father destined for the hunger bunker in the Auschwitz concentration camp.

Maximilian Maria Kolbe was beatified in 1971 by Pope Paul VI, who called him “martyr of love”, and then proclaimed a Saint in 1982 by Pope John Paul II.

On August 14, Father Massimiliano Kolbe Ham Radio callsign SP3RN is remembered as the Saint Patron of Radio Amateurs.

To recall the day of his martyrdom (Auschwitz, August 14, 1941), a special radio callsign for the

Aniversary of Saint Maximilian Kolbe, Saint Patron of Hamradio operators, Radioclub Islas Canarias has been awarded a special callsign EG8HKT , Hermano Kolbe Tenerife to be on air during the week of August 14th to 18th.

Thanks to the Radio Club, the local Hamradio operators remark the existance of an image of the Saint in the island of Tenerife. The image is located in the Hermitage of Nuestra Sra. de Guadalupe, Casas de la Cumbre, in the area of Anaga, in Tenerife, Canary Islands.

On 10 October 1982, Pope John Paul II canonized Kolbe and declared him a martyr of charity.^[2] The Catholic Church venerates him as the patron saint of amateur radio operators, drug addicts, political prisoners, families, journalists, and prisoners.^[3] John Paul II declared him "the patron of our difficult century".^[4]^[5] His feast day is 14 August, the day of his martyrdom.

vendredi 16 mai 2025

Very nice DXCC map

https://qsl.net/dxccmap/

DXCC Interactive World Map

By ES7AAZ

The DXCC World Map web application is a modern and interactive mapping tool designed for shortwave radio enthusiasts. It showcases a high-quality world map along with the Sun's position, sunrise and sunset times, the terminator, coordinates, QTH locator, azimuth, azimuth map, current DXCC list, Aurora, and WWV Geophysical Alert Messages. Additionally, it provides the SFI, X-Ray, Kp, and Ap indices.

You can zoom on the map

jeudi 15 mai 2025

WEBSDRSWL: Antennas for SWL on MW and SW

WEBSDRSWL: Antennas for SWL on MW and SW: I make few articles about SW and MW antennas for listeners. Loop shortwave antennas for SWL not to much expensive (made in CHINA) https://c...

mercredi 14 mai 2025

How to make a serious SWL ANTENNA FREE in PDF

How to make a very serious antenna for shortwave listening FREE in PDF !!!

If you prefer to buy your SWL antenna go part 2 please

You can find a lot of informations in this free PDF book

Chapter 13 Page 284

http://www.ok1mjo.com/all/ostatni/HAM/Practical_Antenna_Handbook.pdf

https://icomjapan.blogspot.com/2023/07/how-to-make-very-serious-antenna-for.html

The best SWL antenna indoor or outdoor for a cheap price.

https://icomjapan.blogspot.com/2023/08/the-best-swl-antenna-indoor-or-outdoor.html

Comment utiliser un WEB SDR 150 kHz a 30 MHz

Comment utiliser un WEB SDR 150 kHz a 30 MHz, How ...:

You can translate this article, look at the top right of my blog, thank you.

Decode Morse code (CW) with a KIWI SDR

https://icomjapan.blogspot.com/2023/05/listen-and-decode-morse-code-cw-with.html

What is the difference between a WEB SDR and a KIWI SDR for a SWL of MW and SW radios ?

https://icomjapan.blogspot.com/2023/09/what-is-difference-betwen-web-sdr-and.html

Listen the world for FREE on your computer ( SW and MW radios, HAMs, Utility, etc )

https://icomjapan.blogspot.com/2023/12/listen-world-for-free-on-your-computer.html

Free book for SWL and BCL in PDF by N2EI

https://www.naswa.net/images/Radio_Monitoring_A_How_To_Guide.pdf

https://www.naswa.net/journal/areybook

https://swling.com/

FREE in PDF The Ham Radio Handbook by W6PNF and many other books and magazines

https://icomjapan.blogspot.com/2023/05/free-in-pdf-ham-radio-handbook-by-w6pnf.html

SHORTWAVE LISTENING GUIDEBOOK

FREE in PDF

https://worldradiohistory.com/Archive-DX/Miscellaneous/Shortwave-Listening-Guidebook-2nd-Helms-1992-ORIG.pdf

All the Popular communications and Monitoring Time magazine collection for Free in PDF

https://icomjapan.blogspot.com/2023/08/all-popular-communications-and.html

dimanche 11 mai 2025

ICOMJAPAN: FREE in PDF The Ham Radio Handbook by W6PNF and ma...

ICOMJAPAN: FREE in PDF The Ham Radio Handbook by W6PNF and ma...: Hello i am Frank SWL F14368 in may 2023 i have find on internet many books and magazines about radio, HAM radio, SWL and CB radio. they are ...

mercredi 7 mai 2025

DX clubs for amateur radios operators

A significant purpose for DX CLUBS and its members is to support DXpeditions to rarer locations.

Russian Robinson Club

https://robinsons.ru/

Clipperton DX club (France)

https://cdxc.org/category/english/

https://www.cdxc.org.uk/

Some DXpeditions can be help by many sponsors

https://www.dx-adventure.com/

https://ncdxf.org/

https://tcdxa.org/

https://indexa.org/index.html

https://www.ohdxf.fi/

https://ladxg.no/content/home/default4.asp

https://gdxf.de/en/

https://www.eudxf.eu/

https://www.ddxg.dk/

https://rsgb.org/main/operating/hf-dxpedition-fund/

https://www.cdxp.cz/?page_id=2705

https://gmdx.org.uk/

https://sdxg.net/

https://www.adxa.org/

https://okdx.org/

http://www.nodxa.org/

Lot of sponsors for a 1.7 Millions US Dollars

https://3y0k.com/

https://3y0k.com/#contact

vendredi 2 mai 2025

IOTA Island Group Listings

https://www.iota-world.org/

"IOTA is an exciting and innovative activity programme that has caught the interest of thousands of radio amateurs worldwide. Established in 1964, it promotes radio contacts with stations located on islands around the world to enrich the experience of all active on the amateur bands and, to do this, it draws on the widespread mystique surrounding islands. It is administered by Islands On The Air (IOTA) Ltd (called here IOTA Management) in partnership with the Radio Society of Great Britain (RSGB).

IOTA Management has grouped the oceans' islands into some 1200 'IOTA groups' with, for reasons of geography, varying numbers of 'counters', i.e. qualifying islands, in each group and has published the listings in the IOTA Directory and on the IOTA website. The objective, for the IOTA Island Chaser, is to make radio contact with at least one counter in as many of these groups as possible and, for the IOTA Island Activator, to provide such island contacts. The programme has a strong rule structure. IOTA Management encourages friendly competition among chasers by publishing details of participants' performance in an Honour Roll and annual listings, as well as by recognising it with certificates and prestige awards."

History of IOTA

https://www.iota-world.org/history.html

In 1964 a British Short Wave Listener, Geoff Watts (now sadly a Silent Key) started an activity programme based on contacting island groups around the world. Geoff was not a wealthy man and had little opportunity to travel himself, but it is clear that listening to amateurs operating from remote island locations captured his imagination. Thus the Islands on the Air (IOTA) programme was born.

The main meeting frequency for IOTA is 14.260MHz.

Other ones on SSB are:

28.560

28.460

24.950

21.260

18.128

14260

7.055

3.755 MHz

AFRICA AF

https://www.iota-world.org/iota-directory/iota-island-group-listings/africa.html

ANTARCTICA AN

https://www.iota-world.org/iota-directory/iota-island-group-listings/antarctica.html

ASIA AS

https://www.iota-world.org/iota-directory/iota-island-group-listings/asia.html

EUROPE EU

https://www.iota-world.org/iota-directory/iota-island-group-listings/europe.html

OCEANIA  OC

https://www.iota-world.org/iota-directory/iota-island-group-listings/oceania.html

SOUTH AMERICA, BRITISH ISLES, WEST INDIES  SA and other

https://www.iota-world.org/iota-directory/iota-island-group-listings/south-america-british-isles-west-indies.html

NORTH AMERICA  NA

https://www.iota-world.org/iota-directory/iota-island-group-listings/north-america.html

ARCTIC ISLANDS  NA and EU

https://www.iota-world.org/iota-directory/iota-island-group-listings/arctic-islands.html

LINKS for IOTA

https://www7b.biglobe.ne.jp/~ja1qxy/sub19.html

https://www.qsl.net/va3rj/cubaiota.html

https://www.qsl.net/va3rj/isl_iota.html

https://www.wlota.com/

https://www.qsl.net/sv2ael/sv2ael.files/sviota.htm



QSL for HamSphere




Remote from HamSphere

SWL F-14368 Frank