Cq Ham Radio Magazine Japan

[Yaima President]

Theministry said in a letter that there have been 44 reported cases since 2021, mainly attributed to, but not limited to, large-scale solar plants. It noted that solar generation systems have been interfering with local government digital radio systems used for disaster prevention, fire response services, and emergency communications.

The ministry also warned that any solar projects that continue to interfere with radio equipment could be removed by law. It said it plans to integrate International Electrotechnical Commission (IEC) standards for unwanted radio wave emissions from solar generation systems for projects in Japan.

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CQ ham radio is a monthly amateur radio enthusiast magazine published in Japan. The magazine is published in Japanese and draws its subscription base primarily from Japan. The name of the magazine is derived from the international amateur radio call CQ, used to indicate that the station making the call is available for communications with any other station.

"CQ Ham Radio" is doing well. Its circulation is one of the three largest

among monthly magazines in Japan. Although "CQ Ham Radio" is not the

official journal of the Japan Amateur Radio League (JARL's official monthly

publication is "JARL News", a puny pamphlet that is widely criticized as an

ill side effect to JARL membership), "CQ Ham Radio" is "edited under

guidance of JARL". In fact, CQ Publishing has their main office is in the

same building as JARL's.Unfortunately, it costs a fortune to subscribe to "CQ Ham Radio" directly

from the publisher (to be precise, from an overseas periodical distribution

agency which has sole rights to carry "CQ Ham Radio"), even if you use

surface mail. The most convenient way is to buy it at your local Japanese

bookstore. This only works if you live in a large city like New York, San

Francisco, or Los Angeles. That would cost about nine or ten dollars. The

second best way is to ask a friend in Japan to mail it to you. The

magazine itself costs four dollars or so, and surface shipping is about two

dollars. You'll save on money, but will be asking somebody a favor.Since you seem to be interested in home brewing, I would recommend "Ham

Journal", a bimonthly also published by CQ Publishing. This magazine is

much more advanced. Each issue focuses on some particular technical topic,

and coverage is fairly deep. This magazine is about the same size as

"QST". "CQ Ham Radio" is for finding out the latest equipment. "Ham

Journal" is for bulding your own radio. I'm making a modularized SSB

tranceiver which appeared on "Ham Journal" several months ago.Another less known publication that has homebrew information is "Mobile

Ham". It started out as a magazine specializing in portable and mobile

operations, when bulding small, stable, rugged radios was a major

challenge. Nowadays, they deal with advanced homebrewing techniques.

"Mobile Ham" is also a monthly, about the size of "QST".While on the topic, let me add "Radio Life", a popular magazine slightly

wider than a paperback book that defies the twilight zone between legality

and thrill. This is a must for scanning fans. Lots of "secret

frequencies" listings appear in each issue. This is your consumer guide to

electronic surveillance. Find out what that couple is doing in the

apartment across the street! Want to modify your car so it looks like an

unmarked squad vehicle? We'll show you just how to do it -- no more

parking tickets ever! In a country where not only third party traffic is

illegal, but it is a felony punishable by two hundred thousand yen fine or

two year imprisonment or both to merely disclose a frequency used by others

for any particular purpose, this magazine has lots of guts. Quite

interestingly, among of its avid subscribers are newspapers and TV stations

-- they depend on police radio traffic to miraculously appear on the scene.

And even though police radio is now digitized, zealous "undercover

monitoring" fans have allegedly cracked the code, bringing in windfall

profits to Japan Radio Company, the major supplier of radio equipment to

public services in Japan.Oh well, I ramble too much. If you have any more questions, please let me know, and I'll respond.-----------------

--- Goh Kawai --- speech research and technology program, sri international

----------------- arpanet: ka...@speech.sri.com radio: n6uok and 7l1fqe

Solar physicist Keith Strong has been keeping an eye out for any signs of CMEs from the recent eruptions but according to his recent post on X , "there is unlikely to be any geomagnetic activity as a result of the high solar activity."

However, the flare did cause shortwave radio blackouts across Australia, Southeast Asia, and Japan shortly after the eruption. These blackouts are common following powerful solar flares due to the intense bursts of X-rays and extreme ultraviolet radiation emitted during these events.

The radiation from solar flares travels to Earth at the speed of light and ionizes (electrically charges) the upper atmosphere upon arrival. This ionization creates a denser environment for high-frequency shortwave radio signals to pass through, to facilitate communication over long distances. As radio waves interact with electrons in the ionized layers, they lose energy due to increased collisions, which can degrade or completely absorb the radio signals.

Solar flares are eruptions from the sun's surface that release powerful bursts of electromagnetic radiation. These flares occur when the magnetic energy built up in the solar atmosphere is released. They are categorized by size into different classes with X-class flares being the strongest. M-class flares are 10 times less powerful than X-class flares, followed by C-class flares which are 10 times weaker than M-class flares, B-class are 10 times weaker than C-class flares and finally, A-class flares which are 10 times weaker than B-class flares and have no noticeable consequences on Earth. Within each class, numbers from 1-10 (and beyond for X-class flares) describe a flare's relative strength.

Daisy Dobrijevic joined Space.com in February 2022 having previously worked for our sister publication All About Space magazine as a staff writer. Before joining us, Daisy completed an editorial internship with the BBC Sky at Night Magazine and worked at the National Space Centre in Leicester, U.K., where she enjoyed communicating space science to the public. In 2021, Daisy completed a PhD in plant physiology and also holds a Master's in Environmental Science, she is currently based in Nottingham, U.K. Daisy is passionate about all things space, with a penchant for solar activity and space weather. She has a strong interest in astrotourism and loves nothing more than a good northern lights chase! "}), " -0-10/js/authorBio.js"); } else console.error('%c FTE ','background: #9306F9; color: #ffffff','no lazy slice hydration function available'); Daisy DobrijevicSocial Links NavigationReference EditorDaisy Dobrijevic joined Space.com in February 2022 having previously worked for our sister publication All About Space magazine as a staff writer. Before joining us, Daisy completed an editorial internship with the BBC Sky at Night Magazine and worked at the National Space Centre in Leicester, U.K., where she enjoyed communicating space science to the public. In 2021, Daisy completed a PhD in plant physiology and also holds a Master's in Environmental Science, she is currently based in Nottingham, U.K. Daisy is passionate about all things space, with a penchant for solar activity and space weather. She has a strong interest in astrotourism and loves nothing more than a good northern lights chase!

by Greg Whiter, VK4IG (Ex VK3CA) Japanese electronics engineer Sako Hasegawa, JA1MP, established Yaesu Musen Company during 1959 in the Tokyo suburb of Yaesu. Prior to this date he had been operating a company called General Television Co Ltd in Ota-ku, Tokyo since 1956. His first SSB Equipment had been manufactured under the General Television Co Ltd name in 1957. Sako Hasegawa's ambition appears to have been to design and manufacture modern HF single sideband equipment (initially transmitters) for the amateur radio market. Yaesu Musen Co's first product was a crystal controlled monoband 40 metre transmitter, the FL-10/40. Quickly following on its heels was a 5 band crystal controlled mechanical filter HF transmitter called the FL-20. Finished in grey crackle paint, it featured a built-in power supply, VOX and was only 250 x 380 x 180 mm in size. In Japan the FL-20 sold for 49,800 Yen, equivalent to approximately 62 Australian Pounds in 1963.

A partial circuit diagram of the FL-20, its Block Diagram and photos of the Mark 2 version and an FL-20B are shown here.

Also available on the Japanese market at the same time was Yaesu Musen's FL-100 (which also never sold in Australia). Like the FL-20, it was a crystal controlled 5 band HF transmitter but with an SSB power input of 100 watts PEP (a VFO controlled transmitter was not available until the FL-20B and FL-100B appeared early in 1964). Between the models FL-20 / FL-100 and the FL-20B / FL-100B were the FL-20A and FL-100A. Both were crystal controlled 5 band HF SSB transmitters but had somewhat improved appearance to their predecessors.

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