Japanese 3-Letter Call Signs #4

These are from various unofficial sources. As always with utility radio, it's only as good as the people who've taken the time to research it.

JOx This block was coast stations; these might be old/ obsolete:

JOE Omaezaki fishing guild (old)
JOF Choshi, may be used in Antarctica
JOG Shizuoka Prefectural Fisheries Experimental Station (old)
JOH Fukushima Prefectural Fisheries Laboratory
JOI Miyagi Prefectural Fisheries Experimental Station JOJ Iwate Prefectural Fisheries Experimental Station
JOK Yokohama International Marine Signal Station
JOL Aomori Prefectural Fisheries Experimental Station
JOM Kochi Prefectural Fisheries Experimental Station
JON Makurazaki fishing association
JOO Ibaraki Prefectural Fisheries Experimental Station
JOP First fishing town Ama Association
JOQ Second fishing town Ama Association
JOR Chiba Prefectural Fisheries Experimental Station
JOS Nagasaki Radio (old public coastal station, now off air)
JOT URA fishermen's union, Muroto
JOU Nagasaki Radio (old coastal station)
JOV URA fishermen's union, Watanoha
JOW Fishery cooperative, Misakicho Yagasaki
JOX Mie Prefectural Fisheries Experimental Station
JOY Aburatsu fishing association
JOZ (JOZ, JOZ2-7) HF broadcasting

JPx This block mostly police, JPA might be INTERPOL

These calls may also be obsolete:
JPV Fishermen's union Kesennuma
JPW Chiba Prefectural Fisheries Experimental Station
JPX Great Japan Sugar, Daito Jima
JPY Far Seas Fisheries Association, Fukuoka, Trawlers
JPZ Far Seas Fisheries, Nagasaki Trawler Association

JSC Call currently used at Kagoshima for Kyodo News FAX on 16971 kHz, 5kW

Japanese 3-Letter Call Signs #3

These are from various unofficial sources. As always with utility radio, it's only as good as the people who've taken the time to research it.

JIA## Aero, includes Tokyo Volmet, now Kagoshima (NTT closed Nazaki)

JJx This block is mostly governmental:

JJC Newspaper facsimile (Kyodo)
JJD Radio astronomy data (Ursigrams, etc), was 10415 kHz
JJD2 Radio astronomy data, was 15950 kHz
JJF2 Navy submarine comm on VLF
JJY Frequency Standards Bureau, off HF

JKx A series of JKx2n calls for NHK HF broadcasting

JMx Mostly Japanese Meteorological Agency (JMA) for wx:

JMB Call was used for wx at Nazaki, fate unknown
JMB37 JMA, Fussa, was 14665 kHz
JMC Marine Weather Agency, may be VHF only
JMG (JMG-JMG6) JMA, Intl. Regions, was Nazaki (NTT closed site)
JMH (JMH2,3,4,5,6) JMA FAX, tx now Kagoshima
JMI (JMI-JMI4) JMA, Intl. Hemisphere, Tokyo was 13963 kHz
JMJ (JMJ-JMJ6) JMA, Ibaraki Prefecture, was 18441.2 kHz (off air)
JMN22 JMA, Naha, 14940 kHz

JNx This block is for the Coast Guard:

JNA CG, Tokyo
JNB CG, Naha
JNC CG, Maizuru
JND CG, Akita
JNE CG, Hiroshima
JNG CG, Ishigaki
JNH CG, Tanabe
JNI CG, Hakodate
JNJ Coast Guard 10th Maritime Safety HQ, Kagoshima
JNK CG, Sasebo
JNL CG, Otaru
JNN CG, Shiogama
JNO CG, Kochi
JNP CG, Esashi
JNR Coast Guard 7th Maritime Safety HQ, Kitakyushu
JNS CG, Urakawa
JNT CG, Nagoya
JNU CG, Muroran
JNV CG, Niigata
JNW CG, Wakkanai
JNX CG, Kushiro
JNZ CG, Fushiki

Japanese 3-Letter Call Signs #2

These are from various unofficial sources. As always with utility radio, it's only as good as the people who've taken the time to research it.

JGx This block for government and fishery:

JGA Fuji meteorological observatory
JGC Coast Guard/ Customs, Yokohama
JGD Coast Guard/ Customs, Kobe

JHx This block for fishery, with some gaps:

JHA Ibaraki Prefecture Fisheries Cooperative Wireless Nakaminato
JHB Fisheries Kushikino
JHC Chiba Prefecture Fisheries Cooperative Radio
JHD Fisheries Hakodate Radio Association
JHE Ehime Prefectural Fisheries Cooperative Wireless, Fukaura
JHF Niigata Fishery
JHG Fishing Usuki
JHH Fisheries Owase
JHI Fisheries Cooperative Wireless Natikatsuura, Wakayama Prefecture
JHJ Fisheries Cooperative Ootsuti Wireless
JHK Hakodate
JHL Fisheries Tosashimizu
JHM Aomori Fisheries
JHO Otaru fisheries
JHP Fisheries Ofunato
JHQ Fisheries Shiogama
JHS Fisheries Karatsu
JHT Miyako (Terrestrial radio facilities for fishing)
JHU Nemuro fishing cooperative
JHW Abashiri Fisheries
JHX High-Samani Fishing (Terrestrial radio facilities for fishing)
JHY Port of Nagoya
JHZ Fisheries Monbetsu

Japanese 3-Letter Call Signs #1

These are from various unofficial sources. As always with utility radio, it's only as good as the people who've taken the time to research it.

JBx This block for common carriers other than NTT
JCx This block for NTT common carriers
JDx This block for NTT coastal stations

JFx This block for Fishery Radio Stations:

JFA Central Fisheries National Radio ("Chuo Gyogyo")
JFB Mugi Tokushima Prefecture Fisheries Cooperative Radio
JFC Fisheries Radio Association, Misaki, Kanagawa Prefecture
JFD Ishikawa Prefecture Fisheries Cooperative wireless [Ogi]
JFE Fisheries Radio Association, Okinawa
JFF Miyagi Prefecture Fisheries Wireless Corporation
JFG Yaizu, Shizuoka Prefecture Fisheries Cooperative Radio
JFH Tuna Fisheries Cooperative Associations in Mie Prefecture
JFI National Federation of Fisheries Cooperative, Hyogo Prefecture [Kasumi]
JFJ Unknown company
JFK Shimonoseki (Terrestrial radio facilities for fishing)
JFK2 Akkeshi Radio Association (Whaling)
JFL Fisheries Suzaki
JFM Kochi Prefecture Fisheries Cooperative wireless, Muroto
JFN Tobata (Terrestrial radio facilities for fishing)
JFO Fukuoka (Terrestrial radio facilities for fishing)
JFP Miyazaki Prefectural Federation of Fisheries Cooperative, Aburatsu
JFQ Makurazaki
JFR Radio Association of Fisheries, Nagasaki
JFS Aomori Prefectural Fisheries Cooperative
JFT Kamaishi Fisheries Cooperative Wireless
JFU Ishinomaki (Terrestrial radio facilities for fishing
JFV Kesennuma
JFW Fukushima Prefecture Fisheries Cooperative Radio, Iwaki
JFX Kagoshima Prefecture Fisheries Cooperative Radio
JFY Wakkanai ( Terrestrial radio facilities for fishing)
JFZ Kushiro Fisheries Cooperative (ship equipment)