Datasheet 2

Datasheet 1 からの続き


Dipole antennas
Vertical quarter wave length antennas
Long wire antennas
Yagi antennas invented by Dr.Hidetsugu Yagi and Dr.Shintaro Uda of Japan
The other Japanese compact antennas
nanoVNA antenna analyzer originally  invented by Tomohiro Takahashi, a Japanese engineer
Crystal radio
Skywave propagation including  Near Vertical Incidence Skywave propagation(NVIS) technology
Solar cycle and ionosphere
Analog phone QSOs
Internet QSO softwares using VoIP
DX FM radio, DX AM radio and AIR bands
Meteorology particularly about typhoons
Virology, immunology, epidemiology and human nutrition
Web technologies
Science, engineering, technologies, designs and philosophies particularly from Japan

QSL Cards:

Three ways including the Internet, paper card by the bureau and no exchange of QSL cards too.  I’m not so interested in collecting paper QSL cards though.

Databases,  Internet QSL and logbooks

Ministry of Internal Affaires and Communications of Japan: Yes
: Yes Yes Yes
LoTW: Yes Yes
Air HAM LOG: Yes
Turbo HAMLOG: Yes
HamMemo on iOS: Yes
JARL email: Yes

Bands of skywave appearing now.


Dipole antennas
Quarter wave length vertical antennas
Long wire antennas

3.8MHz  – 50 MHz bands

Ant-1: Dipole antennas

Balun 1: COMET’S CBL-2500 (1.8MHz – 56MHz, max 2.5kW PEP)
Balun 2: DIAMOND’s BU-50A (1.7MHz-40MHz, max 1.2kW PEP)

Ant-2, 3 and 4: Multi bands vertical quarter wave length antennas. See here for the details.

Ant-5: A horizontal 50MHz MOXON antenna with 4-element.

Antenna masts: Telescopic aluminum masts, COMET’s CP-80L x 1 piece, COMET’s CP-45 x 2 pieces.
Fishing rods: SUNSHUN’s SCCF-8000 x 1  and ZHONG HUA 1800 (13.5m) x 2
Towers: NAGARA’s NRT-200HD x1 and NRT-150 x2
Rotator: YAESU’s G-450A

144MHz band

Antenna-1: A ground plane antenna, DIAMOND’s X-50 (6/8 λ)
Antenna-2: A ground plane antenna, DIAMOND’s X-300 (5/8 λ x 2)
Antenna-3: A Yagi antenna, RADIX’s RY-144M3/Ⅱ with four elements

430MHz band

Ant-1: A ground plane antenna, DIAMOND’s X-50 (5/8 λ x 3)
Ant-2: A Yagi antenna, RADIX’s RY-430M6 with six elements
Ant-3: A biconical antenna, COMET’s CBC-70
Ant-4: A portable loop antenna, GH-4 with four elements designed by Tomohiko Kinebuchi (JA1NUW)
Ant-5: Dual loop antennas with seven elements each made by Minoru Fukazawa
Ant-6: A portable dipole antenna designed and made by Hiro
Ant-7: A portable 5/8 λ rod antenna, SAGA DENSHIKOGYO’s Super ROD-7 SMA
Ant-8: A super disk-cone antenna, DIAMOND’s D-130
Ant-9: A ground plane antenna, DIAMOND’s X-300 (5/8 λ x 5)
Rotator: A light weight rotator made by Minoru Fukazawa x 2

Internet based QSO system



ICOM’s IC-7610M

A desktop one,
HF & 50MHz
+144MHz with a transverter
+433MHz with a transverter

YAESU’s FT-7900H

A desktop one, 144  & 430MHz


A handheld one, 144  & 430MHz



A desktop one, 100KHz to 1,300MHz


A handheld one, 100KHz to 1,300MHz

GAKKEN’s Vacum Tube Radio Version 2

A desktop one, 531KHz – 1,602KHz

Power Supplies:

Alinco’s DM-330MV

A desktop one, Output DC 5-15V variable, Maximum 30A

Panasonic’s BQ-100

A portable one, DC 12V, Maximum 10A

The other antennas:

A super disk-cone antenna, DIAMOND’S D-130 mainly for receiving.

An FM Yagi antenna, MASPRO’s FM2A with two elements x 1 piece,

The other facilities:

Roof towers: NAGARA’s NRT-200 and NRT-150 x 2


Cable Selectors: DIAMOND’s CX310A x 2 pieces

SWR & Power meter: Diamond’s SX-600

Antenna Standing Wave / Network Analyzer: COMET’s CAA-500 Mark II

Antenna Stay: GLASS FIBER KOKEN’s DEBEGLASS WIRE 4mm diameter デベグラスワイヤー


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