Copyright (C) 1997-2024 "Uchimura"
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japanese



Title


(The update is not being done now)


welcome

( Final renewal day of the data is Jan 20, 2004 )


JA6HIC ( Toshizumi Uchimura )


Greeting

I start amateur radio and become for more than 35 years(since1967). I am making a transceiver and antenna and easy measuring device etc. with self oneself. And I am enjoying amateur radio with the radio equipment that I made with self oneself.

Also, recent operates the personal computer and became possible to connect to the Internet. I made this homepage, to introduce the radio equipment that I myself made at the opportunity of this.

Representative homemade equipment

The work that I introduce with this homepage is a transceiver, antenna, easy measuring device.
The photograph of under is the HFSSB transceiver (NO5 machine), antenna (3el ZLspecial), the frequency counter, that at present are using it. Needless to say I myself made all these devices.

NO5 machine jpg 10kb 3el ZL special jpg 5kb frequency counter jpg 10kb

Antenna
..ZL Special (Final renewal May 16, 2000)
  • Introduction about the reconstruction method to 2EL and also 3EL for 21MHZ
..Skeleton slot (Yet only the Japanese explanation)
  • Introduction of the skeletonslot Antenna for 430MHZ and also 1200MHZ
Transceiver
..NO5 machine (Final renewal Oct 29, 2000)
  • The use of ladder type Xtal filter of 15MHZ (For 21MHZ)
..NO4 machine (Yet only the Japanese explanation)
  • 9MHZ Xtalfilter use that is marketed(For 21MHZ)
..NO3 machine (Yet only the Japanese explanation)
  • Portable transceiver for 21MHZ
..NO2 machine (Yet only the Japanese explanation)
  • Portable transceiver for 7MHZ
..NO1 machine(Yet only the Japanese explanation)
  • remodel the PLL unit for the CB radio machine and use (For 21MHZ)
..NO6 machine (Final renewal Jun 6, 2000)
  • At present transceiver for production intermediate (For 21MHZ)
Measuring device
..The frequency counter (Yet only the Japanese explanation)
  • Introduction of the LED 8digit display frequency counter
..The dip meter (Yet only the Japanese explanation)
  • Introduction of dip meter of liquid crystal display counter inclusion
..SWR meter for QRP (Yet only the Japanese explanation)
  • Introduction of the SWR meter for small power measurement
..Condenser capacity meter (Yet only the Japanese explanation)
  • Introduction of the condenser capacity measuring device
..Adjustment back-up instrument (Yet only the Japanese explanation)
  • Introduction of a simple adjustment back-up instrument
"QRP"DX contact relation
..21MHZ DX condition information (Yet only the Japanese explanation)
  • Introduction about the propagation situation of DX
..A recent"QRP"DX contact achievement (4) (Yet only the Japanese explanation)
  • Introduction of the DX contact achievement by recent QRP
..A recent"QRP"DX contact achievement (3) (Yet only the Japanese explanation)
  • Introduction of the DX contact achievement by recent QRP
..A recent"QRP"DX contact achievement (2) (Yet only the Japanese explanation)
  • Introduction of the DX contact achievement by recent QRP
..A recent"QRP"DX contact achievement (1) (Yet only the Japanese explanation)
  • Introduction of the DX contact achievement by recent QRP
..DX contact achievement by QRP (Final renewal Oct 30, 2001)
  • Introduction of the achievement of the DX contact by QRP in the past
Other
..Stamp of the beautiful world (Final renewal Jan 20, 2004)
  • Introduction of the stamp of the beautiful world
..Old work introduction (Yet only the Japanese explanation)
  • Introduction of the vacuum tube style transceiver