| HFD homepage | English/Japanese | update: 2009/9/4 |
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Operation Status of the HFD Radio Station JG2XA |
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The HF radio station JG2XA was established on July 3, 2001 at the Chofu campus of the University of Electro-Communications (UEC) after the inspection of the equipments by the Post, Telephone and Telecommunication Office. Since then, the station JG2XA has been operated by Sugadaira Space Radio Observatory, UEC, for the HFD Project to study ionospheric disturbances. The JG2XA station is continuously operated with the transmission power of 200W both at 5006 kHz and at 8006 kHz. The station ID is normally transmitted every 5 minutes by the amplitude modulation with the morse-codes of the call-sign JG2XA (*--- --* **--- -**- *-) and its objective UEC HFD STATION (**- * -*-* **** **-* -** *** - *- - ** --- -*). The type of radio signal is H2A (amplitude modulation with coded tones by single sidband). The records and schedules of the JG2XA operations are yearly presented below. Emergency operations may be made without notice, but we will report the status here as soon as possible. Please check here if you can not hear us. We appreciate your reception report and we will issue the verification card (Vericard) for the report. |
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Periods (click each period for details) | Remarks |
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Normal Operation will be continued. September 5, 2009: stop transmission |
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Normal Operation had been continued. January 26-29, 2008: frequency stability degraded January 29-30, 2008: stop transmission January 31, 2008: stop stransmission June 8, 2008: stop transmission June 8-9, 2008: frequency stability degraded September 2, 2008: stop transmission of 8006 kHz September 6, 2008: stop transmission September 12, 2008: stop transmission of 8006 kHz September 16, 2008: stop transmission of 8006 kHz September 17-Octobr 20, 2008: stop transmission of 8006 kHz October 20-November 17, 2008: stop transmission of 5006 kHz November 18-December 31, 2008: Normal Operation had been continued. |
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Normal Operation had been continued except for the following period: September 1, 2007: Stop transmission |
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Normal Operation had been continued except for the following period: September 1-2, 2006: Stop transmission |
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Normal Operation had been continued except for the following period: September 3-5, 2005: Stop transmission |
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Normal Operation had been continued except for the following period: May 28-29, 2004: Stop transmission July 15, 2004: Stop transmission July 26, 2004: Stop transmission September 3-6, 2004: Stop transmission October 25, 2004: Stop transmission |
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Modified operations were made from December 18 to 24. Normal Operation is continuing except the trouble at 5006 kHz around April. |
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| Normal Operation had been continued except some troubles. | |
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June 15, 2001: Date of preparatory license July 3, 2001: Date of license July 4, 2001: Start normal operation |
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