Biography

I was born in 1948 and began amateur radio communications at 16-year-old time.

It is all own work with a transmitter, the receiver which I used first.

They were QRV by AM to 7MHz and 21MHz with a vacuum tube type mainly.

Then SSB,FM modulation increased, and the frequency spread from 7MHz to 1,200MHz, too.

However, when I married and moved to an apartment, living environment changed, and amateur radio communications were not possible.

I retired and I became free and I devised it and, 30 years later, reopened amateur radio communications as follows.

I live in the 7-story fifth floor of the apartment.

The width of the porch had only 6.3m and is installing six next antennas in the porch of this small space.

1. 10m Long Wire(3.5MHz,7MHz,10MHz,14MHz,18MHz)
2. 3.5m Spiral End Fed dipole(21MHz)(August,2014 update)
3. M-shaped dipole (24MHz, 28MHz)
4. 1/4 Groundplane(50MHz)(September,2014 update)
5. 5 elements Yagi(144MHz)(one's own work rotary mechanism using Mabuchi Motor)
6. AWX(430MHz,1200MHz)

The transmission and reception of the electric wave from 3.5MHz to 1.2GHz is possible with these antennas.

Because there are many radio noises in the city, cannot calling "CQ".

Please I think that I feel sorry if you hear my feeble electric wave, and, please reply.

However, it was improved now (2014 January).

The overall signal became weak, but understood that radio noise largely reduced it when I used a short antenna of the length at the time of the reception.

I remodeled the transceiver to exchange time of the reception and time and an antenna of the transmission.

At the time of the 21MHz use, I use the antenna for 28MHz(with common mode filter) for the reception.

At the time of the 28MHz use, I use the antenna for 50MHz(with common mode filter) for the reception.

A voice(SSB) buried among noises appears, and the signal of JT65A was improved approx 10dB.

It was only 21MHz and 28MHz, but I came to be able to call "CQ".

Worked DXCCs: