JS2SB

Original: Ryota / JJ1WTL — 505386673 · Original Japanese HTML

Published: 2024-10-26T00:47:00+09:00

English translation of the archived article text. The author’s first-person observations, uncertainty and later additions are preserved; this is not the research summary. Image contents are preserved as images, not silently incorporated into the translated prose.

Following the Radio Station Information Search update late on Friday, October 25, I am adding one experimental HF digital fixed station.

So, has anyone recently seen a newly erected log-periodic in Futtsu?

[Added November 9: found beside Tokyo Bay Kannon. Separate article:

https://jj1wtl.seesaa.net/article/505597775.html (English translation)】

This station at Takeoka ↓ is an amateur station, isn't it?

https://www.google.com/maps/@35.202475,139.8467176,52m/data=!3m1!1e3

https://www.tele.soumu.go.jp/musen/SearchServlet?pageID=4&IT=A&DFCD=0004467072&DD=1&styleNumber=21

Image 1: 20241025js2sb.jpg

Copied below, with boundary lines shown in the emission/frequency/power section to make the divisions clear.

Licensee: Sora Communications GK. Licensee address: *****. Station category: experimental station. Licence number: *****. Licence issued: October 22, 2024. Valid until March 31, 2027. Purpose: experiments and tests. Permitted operating hours: continuous. Communications: matters relating to experiments, tests or investigations, excluding Argos-system data transmission and education. Correspondents: receiving equipment belonging to the licensee near Hong Kong, China; Batam Island, Indonesia; and Johor, Malaysia. Identification signal: *****.

JS2SB. Installation location or operating area: Transmitting station:

Futtsu City, Chiba Prefecture. Control station:

Chuo Ward, Tokyo. Emission classes, frequencies and antenna power: 10K0D7D, 10K0D1D, 10K0G7D, 10K0G1D, 10K0F7D, 10K0F1D, 10K0A1D: 6900, 9126, 10953, 12159, 14736, 16209 kHz; 8 kW. 10K0D7D, 10K0D1D, 10K0G7D, 10K0G1D, 10K0F7D, 10K0F1D, 10K0A1D: 6864, 9081, 10845, 12117, 14673, 16119 kHz; 8 kW. Remarks: blank.

Comparing all stations

An update to the table in the earlier post ‘The new JB2XH’:

https://jj1wtl.seesaa.net/article/504743515.html (English translation)

That table is updated below.

[November 9: added a Google Maps link for JS2SB's QTH.]

Field JS2RA JS2RB JS2SA JB2XH No callsign JS2SB
Operator DATACOM SERVICES DATACOM SERVICES 4HF High Bar Communications NuVo Networks Sora Communications
Location Kubota, Sodegaura City Kubota, Sodegaura City Cosmo Classic Club, Minamiboso City TX: Kawado, Chikura-cho, Point 120 m RX: Gotenyama / Takatoriyama Wada-cho Kaihotsu / Minamihara Kokubo, Futtsu City
Licence issued 2021-09-15 → 2024-01-01* 2023-01-25 → 2024-01-01* 2023-06-07 → 2024-01-01* 2023-07-28 → 2024-01-01* — 2024-10-22
Valid until 2023-12-31 → 2027-03-31* 2023-12-31 → 2027-03-31* 2023-12-31 → 2027-03-31* 2023-12-31 → 2027-03-31* — 2027-03-31
Counterparts Chicago, USA Philippines Chicago, USA; Singapore; London, UK Johor Bahru, Malaysia; Chicago, USA†; London, UK† Near Hong Kong (VS6); Batam, Indonesia; Johor, Malaysia
Emission 12K0A1D — 10K0A1D
Emission 12K0D1D 12K0D1D 12K0D1D — 10K0D1D, 10K0D7D
Emission 12K0F1D — 10K0F1D, 10K0F7D
Emission 12K0G1D 12K0G1D 12K0G1D 12K0G1D — 10K0G1D, 10K0G7D
Emission 12K0K1D —
Frequency (kHz) 6864 6864 6864** 6864** — 6864
Frequency (kHz) 6900 6900 6900 — 6900
Frequency (kHz) 9081 9081 9081** 9081** — 9081
Frequency (kHz) 9126 9126 9126 — 9126
Frequency (kHz) 10845 10845 10845** 10845** — 10845
Frequency (kHz) 10953 10953 10953 — 10953
Frequency (kHz) 12117 12117 12117** 12117** — 12117
Frequency (kHz) 12159 12159 12159 — 12159
Frequency (kHz) 14673 14673 14673** 14673** — 14673
Frequency (kHz) 14736 14736 14736 — 14736
Frequency (kHz) 16119 16119 16119** 16119** — 16119
Frequency (kHz) 16209 16209 16209 — 16209
Antenna power 10 kW 5 kW 3 kW 10 kW → 1.5 kW†† — 8 kW

*: Licence renewed.

†: Additional counterpart destination.

**: Additional frequency.

††: Reduced power.

That concludes this quick report.