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JA1KZT Japan flag Japan

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Hello my dear friend.

First of all, thank you for looking at my biography.


I would like to introduce myself on this page...

My name is Masato Yamamoto

and I have more than 30 years experience of medical practice in Japan.

I got a novice radio license when I was 13 years old for the first time

in my life and have been an amateure radio operator for over 40 years

including QRT-period while I was suffering from my real bitter life.

So now I wonder you might be interested when I was born..

. .. which is my top secret....


between you and me... .

I was born in 1956 and have been interested in

every kind of science and culture on this planet.


Let me show you my shack first.

Would you look at this?

I use ICOM IC-7800 and Maclogger as you can see on my desk top.

I can transmitall my waves from 160 meter band to 70 cm band

including WARC bands with a DB-36, aCD-78jr and a GP on atower.

I prefer SSB to very fast CW.


The mascot on the rig which my wife gave me when I finish makingup this shack is

a toy doctorwith an injector in his right hand.

With this mascot's great help inspired by my wife,

I can compete the severe DXCC race.


Sofar I achieved DX QSOs with 91 entities and am satified with this result very much.

Instead of chasing DXCC with a PC,

I would like to enjoy more ragchewing-QSOs all over this planet in a relaxed mood.

I would like to try to receive more QRP signals, mobile signals

and weak signals equipped with any simple antennas

such as dipole, vertical and whip antennas as well from all over the world.

I am sure there is my ecstasy in my Ham life.

Because I had been just a Ham poorly equipped in my youth.

When I was a student, many peopple seemed to enjoy their Ham Radio lives

just the same way I was without PC.


I wish I could speak many languages like you.

However I can use broken English and a little German except for the Japanese as my mother tongue.

Let me learn some good useful words and phrases of yours on the next QSO please.


Then I will show you my antenna system...


a lot of weeds?

Please do not notice such a matter, which is not important, is it?

I have been always busy as an MD at the front line in my clinic.

I took this picture just one day before my gardeners vist here.


Anyway you can see My DB-36, a product of SteppIR

and CD-78jr, a product of Creative Design Corp on the top of the tower.

Can you find another two antennas in this picture?


One is Zepp antenna for 40 meter band and another is GP antenna for 2 meter and 70 cm bands.


I installed a telescopic tower which can reach 28 meters high in ths sky at it's maximum height

from 9.5 meterand put a thick mast of 6 meter long onto the rotor....

so, the top of the GP antenna reaches almost 35 meter above the ground.

It may sounds great.

But on the other hand, it might berisky just a little bit.


Every year we aresuffered from many tyhoon attacks in Japan

and there might be any possible thunder attacks throughout a year.

So I tried to solve these problems as below.


My antennas need the place to rest just like us in the bed,

so I made a nest on a small old tower for this purpose.

Just look at this.. please.

Can you see a small tower with a mast?

Can you see a man installiga tuner box to the top of the mast?

Now you can see how big DB-36 is!


This tower has a manual elevator to move up and down the metalic pillow for my precious DB-36.

Now you can see the Y-shaped metallic pillow and an additional tail pipe of the antenna

which was capsulized in soft plastic cover.

This tail is about 150 cm long and inserted into the end of the boom of DB-36.

This pillow is made out of the old base of a broken rotary dipole antenna.

I will report the efficacy of this nest sytem after every attack of typhoon in our next QSOs


By the way, Kamakura is known to every Japanese

as as an old capital city of Japan in 12'th Century.

History books tell us the unique Samura igovernment had started after arisitocracy

for the first time from Kamakura to all over Japan.

Here are many historical temples with national treasures and statues

and you could be a tourist in this city with me if you need me.

In my QSL card,

you will enjoy my picture of the great Buddaha sutatue in Kamakura.

Samurai organization had continued for centuries until 1868.


If you asked me

what would be the best book when you learn about Japan..

I will recommend Lady Murasaki instantly.

The Tale of Genji is one of top books I love and

offcourse you can enjoy her love story in English too.


Just look at the cover and you will fall in love with her.

.ファイル:Tosa Mitsuoki 001.jpg

Sorry I guess she is estimated more than 1K years old now....

but she still looks very beautiful and inteliigentl.


There are many tlanslations and you can buy them at Amazon .com everywhere on this planet.

Product DetailsProduct DetailsProduct DetailsProduct Details


I want to show you my another hobbies.. if you'd like to know.

I like circuit drivings.

At Fuji Speed Way, many world motor championships like F1 has been held.



And finally here comes a bonus movie!

You will be able to see my face at last in a next movie before you leave here.

Now you have to make a promise with me before you visit Youtube.


PLease turn off your PC sound to erase my funny guitar and just enjoy my handsome figure..

....or you might damage your ear.

I am not responsible for this...

because I warned this twice.




I have a first class License of amateure radio for years and am a lowest class of amaterue guitar player.

Never listen, Just confirm me, please.


That is all.

Best Wishes



Masato Yamamoto M.D., Ph.D.

at my shack in Kamakura city

on Thu. 2'nd. May 2013



I can send waves on 160 meter band through a CD78jr

with a great product of JA1BBE who is my radio teacher and a best friend as well.

If you are interested in the semi-automatic matching box for top and 80-75 meter bands with a CD78jr,

just vist his website!

Many thanks Yoshi!!!

6341122 Last modified: 2015-07-16 00:30:58, 9585 bytes

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QRZ Logbook Summary for - JA1KZT
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Book Totals: 1571 qso's   445 confirmed Get a free logbook at QRZ.COM

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