radio.jj1bdx.tokyo Contents

Radio station JJ1BDX profile

My current QSL and QTH info is here.

Ham radio history

My first shortwave experience was in 1973 with a Sony portable radio ICF-5800 at age 8. Soon I went to Boulder, Colorado, USA, with my parents and spent 1.25 years of American life there from March 1974 to May 1975 at age 9.

I've been licensed since March 1976. I earned my CW license in 1979. And I've got the full amateur radio privilege in Japan since 2003 as the 1st Class Amateur Radio Operator and the FCC Amateur Extra Class ticket, as AE6LI, K1BDX, and now N6BDX.

I'm an ARRL Life Member and ARRL A-1 Operator. Other memberships: QCWA Life Member #34999, FISTS #8962, NAQCC #517, SKCC #9945, CWops #384, A1 Club #426, FT8DMC #13637, 30DMG #11769, and TAPR.

Awards earned: DXCC (Mixed, CW, Phone, Digital, 40/30/20/17/15/12/10m Single-band, Challenge confirmed: 1281 entities), WAZ (Mixed), and WPX (Mixed and Digital). Also, SWL-AJD 10MHz #1 as JA1-21339 in 1983.

I am originally from Setagaya City, Tokyo, Japan. After I started my first ham radio operation on 6m SSB in 1976, I became a packet radio enthusiast from 1985 to 1992, experimenting with TCP/IP on AX.25 and the Terakoya NetNews System with the people of Packet Radio User's Group (PRUG), on 70cm/23cm FM 1200bps AFSK.

I lived in Toyonaka City, Osaka, Japan, from July 1992 to February 2020. I was active as JJ1BDX/3 from June 2002 to October 2014 and was operating JO3FUO during 2005-2014, mostly on HF CW. During this operation, my grid locator was PM74rt, and the JCC/JCG number was 2504.

I came back to Setagaya City again, and I am living there since February 2020. Since May 2020, after a long hiatus of 5.5 years, I've been experimenting with HF operation in Setagaya City for the first time in my life since 1976, mostly on the 30m band, occasionally on the 40m/20m/15m bands, with FT8, FT4, and WSPR. I am also interested in ionospheric measurements conducted by HamSCI.

An unpopular opinion

I've neither had a tower nor linear amplifier exceeding 100W output nor HF and 6m beam antennas. I am enjoying simple and restricted antennas, bear-foot transceivers, and manageable systems at home.

My life as a condo dweller keeps putting me in second-class citizens' status in the ham radio world due to smaller ERP and restricted antennas. It's sad to say that only people who own a shack in a detached house, towers, linear amplifiers, and beam antennas are regarded as first-class citizens in the world of ham radio, especially in DXing.

However, I believe that those lavish property ownerships of maximizing one's ERP are not sustainable through a human being's life. I see more and more cases of the advantages being neutralized and vanished by the owners' unfortunate life events. I respect big system owners who actively maintain the system with passion and devotion, but that is not my style and I think that style should not be forced on anyone. And I don't want to be treated as a second-class citizen.

I believe all amateurs are equal, aren't we?

Notice on JARL non-membership

I terminated my Japan Amateur Radio League (JARL) membership in November 2010. JARL is a financially and morally corrupt organization since the 1980s. I no longer support any of their activities.

Notice on not working Russian and Belarussian stations since 24-FEB-2022

2022 Russian invasion of Ukraine is an intorelable act of agression and I strongly condemn against the invasion. Since February 24, 2022, I've been refusing and avoiding making contacts with the stations in Russian Federation (including the DXCC entities of European Russia, Asiatic Russia, Kaliningrad, and Franz Josef Land) and Republic of Belarus, as well as with the stations self-proclaiming the non-ITU-approved illegal prefixes of Donetsk and Luhansk, namely D0 and D1.

Contacts accidentally made after 24-FEB-2022 with Russian and Belarussian stations, including the Donetsk and Luhansk stations, will neither be logged nor be confirmed.

One exception: RS0ISS, jointly operated ham radio station on International Space Station, also NA1SS.

Callsign and license history

Japanese Station licenses and callsigns

Deactivated past Japanese callsigns

Japanese Operator licenses

USA callsigns and license

SWL callsigns