mardi 30 avril 2024
WEBSDRSWL: Shortwave listeners clubs in the world
WEBSDRSWL: Shortwave listeners clubs in the world: Please if you know a SWL club not on this list, or you have a nice blog about SW listening contact me by facebook https://www.facebook.com...
dimanche 28 avril 2024
History of HITACHI radios from JAPAN
Hitachi was founded in 1910 by Namihei Odaira born on January 15, 1874 who graduated in
engineering in 1900 After graduation, he joined a mining company as an engineer
in its power plant.
https://social-innovation.hitachi/en/article/odaira-namihei-150/
Namihei Odaira was born in 1874 in Ienaka Village (present-day Tochigi City), Tochigi Prefecture, Japan. When he was a student, he chose to study electrical engineering. In 1910, at a time when Japan was dependent on foreign technology, he founded Hitachi, Ltd. with the aspiration of producing electrical machinery in Japan.
The first product manufactured under Odaira's direction was a 5-horsepower motor. This is the oldest existing motor designed and manufactured by a Japanese person. It has been carefully preserved along with the engineering drawings, and in June 2023, it was designated an Important Cultural Property as “5-horsepower Induction Motor and the 5 design sheets.”
Taking advantage of the production of this five-horsepower induction motor, Hitachi workers collaborated with their colleagues on various projects under the corporate philosophy of “Contributing to society through the development of superior, original technology and products.”
From there he moved on to various electric power companies. In 1906 he joined Kuhara Mining
Company in Hitachi1 copper mine as head of engineering section. Although his
main tasks in the mine were to ensure a stable supply of electricity and maintain the
electrical equipment of the mine, he and his colleagues began work on the production of
a five horsepower electric motor.2
Subsequently, in 1920 this structure broke away from the mother factory3 and was established
Hitachi, Ltd was established as an independent company Odaira served as CEO of
Hitachi from 1910 to 1929 and president from 1929 to 1947
After the Second World War, for "political" opportunities, Odaira was sent away until early 19514
but he remained practically for a short time since in October at the age of 77 he died.
As is our habit we will focus our attention on the technical aspect of the Hitachi
we deliberately leave out the story of the metamorphosis undergone by the company over the years
from the point of view of the corporate structure with mergers and divestitures.
Today Hitachi is a multinational that controls around 800 companies covering multiple fields
of electronics,5 but I started as a small group that took care of the maintenance of the electrical department
as part of a Fusanosuke Kuhara mining company in Hitachi
Radio production
Hitachi's range of radio production was very profitable in the 60s, 70s and 80s.
The year of 2024 marks the 150th anniversary of the birth of Namihei Odaira, the founder of Hitachi, Ltd. To commemorate this, “Namihei Odaira 150th Anniversary Exhibition - Namihei Odaira: An Honest Person” is being held at Hitachi Origin Park in Hitachi City, Ibaraki Prefecture, Japan, from January 15.
This special exhibition focuses on the term “honest person,” with “honesty” being part of the values that Odaira cherished throughout his life, so as to zoom in on the man himself. Tsutomu Ogane, director of Hitachi Origin Park, says: “By letting people know the thoughts of our founder, we want them to get a feel for the origin of Hitachi's social innovation business, which we are developing globally.”
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1964
List of HITACHI radios and other
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samedi 27 avril 2024
Make a easy and cheap price antenna to listen AM radios in medium wave
"This DIY AM antenna is best used outdoors but you can make it work inside by somehow re-routing the wires. It amplifies all weak AM signals, so a powerful local station might be heard over your entire AM radio dial."
Source CCRANE.com
Look also this video
I make few articles on my blogs about antennas for listeners
LOOP antenna for MW and SW listeners
Loop shortwave antennas for SWL not to much expensive (made in CHINA)
https://chinaradiosswl.blogspot.com/2023/06/loop-shortwave-antennas-for-swl-not-to.html
Is a loop antenna for a SWL the best solution?
A nice bar-antenna for MW from Japan
Make a simple DX antenna for your Chinese portable radio ( SW )
Good links for antennas SWL, medium and shortwave
FREE in PDF The Ham Radio Handbook by W6PNF and many other books and magazines ( maybe 1000 links !!! )
How to make a very serious antenna for shortwave listening
F5IRO Freddy: Bulletin Union des Télégraphistes Francophones
F5IRO Freddy: Bulletin Union des Télégraphistes Francophones: Le bulletin mensuel de l'Union des Télégraphistes Francophones d'avril est en lecture libre. F6IIE Maurice vient de passer la mai...
vendredi 26 avril 2024
MFJ ceases on-site production in Starkville, Mississippi
MFJ ceases on-site production in Starkville, Mississippi
Sad message from MFJ USA ( who our nice sponsor for SWL Contest 2023 )
"Dear Fellow Hams and Friends,
April 25, 2024
Dear Fellow Hams and Friends,
As many of you have heard by now, MFJ is ceasing its on-site production in Starkville, Mississippi on May 17, 2024. This is also the same for our sister companies’ Ameritron, Hygain, Cushcraft, Mirage and Vectronics.
Times have changed since I started this business 52 years ago. Our product line grew and grew and prospered. Covid changed everything in businesses including ours. It was the hardest hit that we have ever had and we never fully recovered.
I turned 80 this year. I had never really considered retirement but life is so short and my time with my family is so precious.
I want to thank all of our employees who have helped build this company with me over the years. We have many employees who have made MFJ their career for 10, 20, 30, 40 and more years.
We are going to continue to sell MFJ products past May 17, 2024. We have a lot of stock on hand. We will continue to offer repair service work for out-of-warranty and in-warranty units for the foreseeable future.
Finally, a special thanks to all of our customers and our dealers who have made MFJ a worldwide name and a profitable business for so many years. You all are so much appreciated.
Sincerely Yours, 73s
Martin F. Jue, K5FLU"
Envision MFJ Enterprises, Inc., a corporation that originated from modest beginnings within the confines of a small hotel room in 1972, armed with a singular product and a vision. This paragon of quality and diversity in the realm of Radio Amateur was founded by Martin F. Jue. From its inception in the old Stark Hotel in downtown Starkville, Mississippi, MFJ has grown into a global powerhouse, all while maintaining its core values of dependability and diversity.
The company's journey began with the launch of a high selectivity filter, an innovative product designed to isolate a single Morse code signal from a sea of others. This product was a resounding success, selling thousands of units and laying the foundation for the MFJ we know today.
As the company expanded, so did its need for space. From a small hotel room to a large room in a building on Maxwell Street, then to a 600 square foot trailer, and back to Maxwell Street, MFJ was always on the move. The company's largest expansion came with a move to Louisville Street, where it occupied a building affectionately known as "MFJ Blue" for fifteen years. Today, the main administrative office, along with shipping, warehouse, and production facilities, are housed at 300 Industrial Park Road, a testament to the company's continuous growth.
MFJ's commitment to diversity is a cornerstone of its success. From the President, Martin F. Jue, whose family originally hailed from Cantox, China, to the factory worker, MFJ is a melting pot of cultures and ideas. This diversity extends to the company's product line, which is as varied as its workforce. Whether it's the Metalworks Department, the Antenna Shop, or Mirage Communication's Equipment, MFJ's offerings cater to a wide range of needs and preferences.
Despite initial challenges in gaining the support of dealers and distributors, MFJ's focus on quality and innovation led to a surge in demand for its products. Today, MFJ is represented by over two hundred dealers in the United States, forty overseas, and ten in Canada, with a presence in major cities across the globe.
At the heart of MFJ's success is its commitment to innovation. The company invests heavily in research and development, constantly seeking to create new products that meet the evolving needs of its customers. From letters and phone calls to in-person requests at hamfests, MFJ listens to its customers and uses their feedback to drive product development.
MFJ's commitment to quality is evident in every aspect of its operations. From the metalworking shop to the antenna shop, every product starts as an idea and is brought to life through a rigorous process of design, production, and quality testing. This commitment to quality is encapsulated in the company's slogan, "Making Quality Affordable," which has resonated with the ham radio community.
MFJ's customer service is second to none. The company offers a one-year unconditional warranty, aptly named the "NO MATTER WHAT" warranty, and a toll-free technical help support line for customers needing help or advice with a ham radio project.
As the world of amateur radio continues to grow, so does MFJ. With a continuously expanding base of new ham customers, MFJ is poised to maintain its stature as the World Leader in ham radio accessories, equipment, and service for many years to come. Through its commitment to quality, diversity, and customer service, MFJ embodies the spirit of a dependable, quality-based company with the heart of a Radio Amateur.
dimanche 21 avril 2024
mardi 16 avril 2024
ICOMJAPAN: New links for medium and shortwave listeners
ICOMJAPAN: New links for medium and shortwave listeners: The most important link for a SWL https://www.short-wave.info/ A lot of FREE PDF book in french and english https://archives.doctsf.com/docu...
WEBSDRSWL: Shortwave listeners clubs in the world
WEBSDRSWL: Shortwave listeners clubs in the world: Please if you know a SWL club not on this list, or you have a nice blog about SW listening contact me by facebook https://www.facebook.com...
WEBSDRSWL: Make a simple DX antenna for your Chinese portable...
WEBSDRSWL: Make a simple DX antenna for your Chinese portable...: How to make a simple DX antenna for your Chinese portable radio with a telescopic small antenna ? 授人以魚，不如授人以漁。 Homemade Simple Sleeve Anten...
WEBSDRSWL: MW and SW radio receivers what to buy for maximum ...
WEBSDRSWL: MW and SW radio receivers what to buy for maximum ...: They are a lot of brands of Chinese radios receivers made in China. Some brands are famous like Tecsun and some are almost unknown exept if...
WEBSDRSWL: Best choice for rich SWL in 2023 YAESU FT-710 HF/7...
WEBSDRSWL: Best choice for rich SWL in 2023 YAESU FT-710 HF/7...: Do you remember RX for SWL in the past ? Kenwood R5000, Icom R75, Yaesu FRG-100. Now these brands dont make anymore SWL receivers. But you c...
WEBSDRSWL: The history of radio receiver manufacturer brands
WEBSDRSWL: The history of radio receiver manufacturer brands: BARLOW WALDEY https://icomjapan.blogspot.com/search/label/BARLOW%20WALDEY https://icomjapan.blogspot.com/2023/06/history-of-cadillac-radios-...
WEBSDRSWL: The TECSUN radios receivers prices under 100 US do...
WEBSDRSWL: The TECSUN radios receivers prices under 100 US do...: Prices LOW to HIGH Multiband radios for MW and Shortwave 17 to 48 US $ https://www.anon-co.com/product/scott-rx16-radio https://www.anon-co...
WEBSDRSWL: 2024 Shortwave Frequency Guide and 2024 Super Freq...
WEBSDRSWL: 2024 Shortwave Frequency Guide and 2024 Super Freq...: Dear friends, all new products for 2024 - 2024 Super Frequency List on CD - 2024 Shortwave Frequency Guide - 2024 Frequenc...
WEBSDRSWL: Les magazines Français pour radio amateur, SWL et ...
WEBSDRSWL: Les magazines Français pour radio amateur, SWL et ...: MEGAHERTZ ( RA et SWL ) https://www.worldradiohistory.com/INTERNATIONAL/Megahertz.htm https://www.worldradiohistory.com/INTERNATIONAL/Megah...
WEBSDRSWL: Radios clandestines et radios pirates
WEBSDRSWL: Radios clandestines et radios pirates: Publié dans ma rubrique SWL du magazine Français CQ Radioamateur dans les années 90 https://webkiwisdrswl.blogspot.com/2023/12/les-magazin...
WEBSDRSWL: FREE fréquencies guides for listeners of AM radio ...
WEBSDRSWL: FREE fréquencies guides for listeners of AM radio ...: All this links are FREE https://shortwaveschedule.com/?fbclid=IwAR3IDYgrqPuwerdlDAOJc1Zau6BKpxVNNa52aWskEC3QzvK69uBQpmBFA3A https://www.shor...
WEBSDRSWL: Good links to buy a radio receiver for AM radios i...
WEBSDRSWL: Good links to buy a radio receiver for AM radios i...: I have writed many articles about radio receivers for listeners of AM radios but also receivers with SSB or UHF VHF MW and SW radio receive...
WEBSDRSWL: Why i listen on my PC via a WEB SDR ?
WEBSDRSWL: Why i listen on my PC via a WEB SDR ?: In the past i have nice radio receivers and big long wire antennas on the roof. Now in 2024 i have no antenna on the roof but i have big QR...
lundi 15 avril 2024
New list of radio stations on MW and SW for 2024
Look here by frequencies
http://eibispace.de/dx/freq-a24.txt
C A24 - The comprehensive shortwave broadcasting schedule
==========================================================
FREQUENCY VERSION
http://www.eibispace.de/
Valid March 31, 2024 - October 27, 2024By time on the air
http://eibispace.de/dx/bc-a24.txtExemple
0000 0005 We CHN Beibu Bay Radio BR FE 5050n 9820n 0000 0005 We CHN Beibu Bay Radio BR FE 9820n 0000 0005 Mo CHN Beibu Bay Radio KH FE 5050n 9820n 0000 0005 Tu CHN Beibu Bay Radio LAO FE 5050n 9820n 0000 0005 Th CHN Beibu Bay Radio T FE 5050n 9820n 0000 0005 Fr CHN Beibu Bay Radio VN FE 5050n 9820n 0000 0005 THA HSW64 Bangkok Meteo Fax SEA 7396u 0000 0008 Tu-Fr UKR Ukrainian Radio BU EEu 1386/LTU-v 0000 0015 AUS VMC Charleville Met Fax Tas 11030c 0000 0015 PHL FEBC Manila KHM SEA 9795i 0000 0020 J NHK Radio Japan IN SEA 13600y 0000 0030 CHN China National Radio 1 M CHN 1377t 0000 0030 EQA HCJB Voice of Andes COF SAm 6050c 0000 0030 S IBRA Radio BE SAs 11590/UZB 0000 0030 SVK Radio Slovakia Int. SK ENA 15770/USA-o WNA 5850/USA-oTHANK YOU TO EIBIhttp://eibispace.de/You can help EIBI with a donationhttps://www.paypal.com/webapps/shoppingcart?flowlogging_id=f485036b233e6&mfid=1713012591633_f485036b233e6#/checkout/openButton
mardi 9 avril 2024
WEBSDRSWL: Why i listen on my PC via a WEB SDR ?
WEBSDRSWL: Why i listen on my PC via a WEB SDR ?: In the past i have nice radio receivers and big long wire antennas on the roof. Now in 2024 i have no antenna on the roof but i have big QR...
samedi 6 avril 2024
My Japanese radio receiver 1981 to 2024
I am not a collector, in 2024 i have only my Sony 7600 but it is out of order. All the rest was sale.
My first in 1981, sanyo RP 8880
Not a long time later Yaesu 7000
I regrets to have sale this nice receiver !
My first tranceiver Yaesu 707S ( 10 watts )
Icom 725 unfortunatly he have some problems but it was nice to use on 11 meter DX !!!
ICOM ICR 70
I keep ( in the 80 and 90's ) it in my parents house and use my CB radio antenna 5/8 wave on the roof to listen.
Icom R75
It was my last Icom receiver
In 2011 i buy a second hand RX ICOM R75 but i dont keep it, too much QRM and my interest to listen SW was not strong at this moment.
Yaesu FRG 8800
I buy it for 200 Euros but only after few months it was KAPOUT...
My best portable radio receiver was a SONY ICF 7600, i bring it to few place in the world. A very good receiver.
My IOTA DX expedition from Philippines DU4/F14368 in my parents in law. I remember i listen on the terrace with a nice view of volcano who can be active...
ICOM 1000, 2000 and 5000
I keep the R5000 long time and confirm 250 DXCC with amateur radio and 320 IOTA
I keep short time the R1000 and 2000
Its my best receiver, i buy new in a famous Parisian shop GES with F2YT. I make me a spécial price ! I think price it was like on month of salary in the 80's
My antenna was at 30 meters above ground
https://www.universal-radio.com/catalog/sw_ant/1465.html
No QRM !!! No computer screen, internet box, TV plasma, etc
HISTORY of KENWOOD receivers https://icomjapan.blogspot.com/2023/06/history-of-kenwood-shortwave-receivers.html
I has also a old YAESU
I make big mistake because i exchange to my YAESU FRG 7000...
Look begining of YAESU Musen brand
it was with the FT 50
JAPAN was great for HAM radio and SWL équipment
My last TX was a ICOM 706MKIIG in 2022 but this TX is like a heater even you dont transmit !
My antenna was to small so i sale it again ( maybe i am crazy ahahaha )
30 kHz à 54 MHz and 118 à 180 MHz.
The man who buy me know someone to spot the heat probleme
My dream was a JRC receiver
https://icomjapan.blogspot.com/2023/06/the-japanese-rolls-royce-radio.html
https://icomjapan.blogspot.com/2023/08/national-panasonic-radio-receivers-from.html
History of many receiver brand from the world on my web site
A nice bar-antenna for MW from Japan
https://bar-antenna.com/overseas/order.html
SINCE 2 0 0 8 - 1 2 - 0 1 We sell bar antennas, Litz wires, ferrite materials, etc. for the ultra-long wave ~ long wave ~ medium wave ~ short wave band from about 1Hz to 30MHz . Welcome overseas order! Our mascot Medium wave band/no power supply MOS-FET detection radio (The white part is the antenna.) The coil on the left is used for the radio, and the coil on the right is for the tunable external antenna. The antenna part is not CG. It is the length of 4 magazines. Ferrite size: Length 685.8 mm Diameter 25.4 mm Weight 1306 grams Germanium radio for comparison of receiving sensitivity measurements in medium wave band/radio wave hot spot areas 165 x 12.5 mm and 309 x 50.8 mm Ferrite rod with volume ratio 30.9 times comparison
Mizuho Communication + Micro Power Research Institute's new brand Mizuho Communication Research Institute has been born.
Accordingly, some of the products sold by bar-antenna.com will be transferred to Mizuho Communication Research Institute.
From now on, prototypes and custom-made products will be sent to bar-antenna.com, and completed products will be sent to Mizuho Communication Research Institute.
Please note that bar-antenna.com and Mizuho Communication Research Institute are both operated by Micro Power Research Institute, so
Micro Power Research Institute will be the point of contact for all orders.
From 2018, the URL of the nationwide radio hotspot expedition has changed.
For future information, please click here...http: //hotspot-tanken.club/
https://bar-antenna.com/index.html
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