Radio Armateur Station
as of May 2023
Callsign: JK1AVK
Operator: Hiro
Data of Location:
Hakusan, Bunkyo-ku, Tokyo, Japan, 1120001
Grid Square Locater: PM95UR
ITU: 45
CQ Zone: 25
JCC: 100 105
QTH:
Latitude 35.717306 (35° 43′ 2” N)
Longitude 139.744623 (139° 44′ 40” E)
Licenses of Radio Amateur of Japan:
The Fourth Grade: Granted in July, 1996
The Third Grade: Granted in July, 2020
The Second Grade: Granted in January, 2021
Opening Date of the HAM Radio Station
July 2nd, 2020
Themes
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 Paper Cards:
No paper card available.
Databases, Internet QSL and logbooks
Ministry of Internal Affaires and Communications of Japan: Yes
www.QRZ.com: Yes
www.QRZCQ.com: Yes
eQSL.cc: Yes
LoTW: Yes
Daredemo QSL: Yes
ClubLog.org: Yes
Air HAM LOG: Yes
Turbo HAMLOG: Yes
HamMemo on iOS: Yes
JARL email: No
Ham Log: No
Bands of skywave appearing now.
MW-HF
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-45 x 2 pieces.
Towers: NAGARA’s NRT-200HD x1 and NRT-150 x2
Rotator: YAESU’s G-450A x2
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: Two Yagi antennas, RADIX’s RY-144M3/Ⅱ with four elements each
430MHz band
-
- A ground plane antenna, DIAMOND’s X-50 (5/8 λ x 3)
- A portable loop antenna, GH-4 with four elements designed by Tomohiko Kinebuchi (JA1NUW)
- Dual loop antennas with seven elements each made by Minoru Fukazawa
- Quad loop antennas with seven elements each made by Minoru Fukazawa
- A portable dipole antenna designed and made by Hiro
- A portable 5/8 λ rod antenna, SAGA DENSHIKOGYO’s Super ROD-7 SMA
- 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
Transceivers:
ICOM’s IC-7610
A desktop one,
HF & 50MHz
+144MHz with a transverter
+433MHz with a transverter
YAESU’s FT-7900H
A desktop one, 144 & 430MHz
ALINCO’s DJ-S57
A handheld one, 144 & 430MHz
Receivers:
AOR’s AR-DV1
A desktop one, 100KHz to 1,300MHz
ICOM’s IC-R6
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 antenna:
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
Cables: FUJIKURA’s 8D-SFA-LITE, 8D-FB-LITE, 5D-SFA-LITE, etc.
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