What present did we feel happy to be given from our parent ?

Bicycle, baseball bat, doll, comic... Smart phone will be lined up in the future.

In my case, It was a stabilized power supply whose specifications are 12 voltage, 4.2 ampere.

-----

When I was a junior high school student, ham radio had been called "a king of hobby".

The purpose of ham radio is to enjoy chatting with unspecified hum operator in the world.

As far as you hear the above, you might think that it is same as SNS in the present.

However, in fact, the examination of ham radio was difficult (became easier, after that), and we had to study from electric circuit of radio to the law of radio in order to get the license.

When I passed the examination in fifth grade elementary school pupils, I was proud of the license.

-----

When I became junior high school student, my parents gave me a portable ham radio set. But the set needed more than eight dry-cells, and I have to spend most my allowance for them.

A stabilized power supply, that generates direct-current power from domestic electric power, was too expensive for a young high school student.

I used money given as a gift at the New Year, and went to a seedy electric store to buy a stabilized power supply. But after that, the operator indicated a skewed my voice during the operation. After I checked several issues, I confirmed that the quality of the stabilized power supply was awful.

I claim the returning to the store, but in vain after all. I had never done such a sad and regrettable experiment before that.

(To be continued)