Wednesday, June 1, 2011

HFD Radio Station JG2XA -- Japan

HFD Radio Station JG2XA, a 200 watt transmitter used by Sugadaira Space Radio Observatory for HF-Doppler observation of ionospheric disturbances, in Tokyo-Chofu, Japan was heard on 1 June 2011. Although this station  broadcasts 24 hours daily, it was monitored from 18.45 to 19.30 UTC on the frequencies of 5.006 kHz and 8.006 kHz.

Signal on 5.006 kHz was set in USB mode and received with an overall (SINPO) rating of 14221. Signal strength was poor with transmitter modulation, slight interference from WWVH in Hawaii, moderate fading and QRN. Signal  on  8.006 kHz was set in USB mode and received with an overall (SINPO) rating of 25552. Transmission was stronger on this frequency but reception was fair at best with transmitter modulation  and QRN.

Station ID was transmitted every 5 minutes by amplitude modulation on a carrier in morse code with the call sign JG2XA. The type of radio signal was H2A (amplitude modulation with coded tones by single side-band). At 18.53 UTC,  19.07 UTC and 19.19 UTC the H2A telemetry was received using a Grundig Satellit 500, Grundig Satellit 750 and Sangean ATS-909.

RECORDED AT 19.19 UTC ON 1 JUNE 2011 USING A GRUNDIG SATELLIT 500
video

A reception report was submitted by post and email. QSL card is pending verification from JG2XA. 


Address:
c/o Tomizawa Laboratory
Sugadaira Space Radio Observatory
The University of Electro-Communications
1-5-1 Chofugaoka
Chofu-shi
Tokyo 182-8585
JAPAN

Email:
www@ssro.ee.uec.ac.jp

Website:
ssro.ee.uec.ac.jp/lab_tomi/HFD/index.html



2 comments:

  1. Wonderful DX catch!
    All the Best for JG2XA QSL!
    Check out my DX weblog as well
    http://onetherwaves.blogspot.com/
    73!

    ReplyDelete
  2. Hi Rajdeep.

    Thank you. I certainly hope a QSL card will be sent verifying my reception report.

    It was purely by chance I heard JG2XA. I was actually trying to tune in Nepal on 5.005 kHz, which incidentally remains an elusive catch in Malaysia. I noticed an odd signal, then tuned the dial to 5.006 kHz and set the radio in SSB mode. Just to confirm I was hearing the the same data, I tuned to 8.006 kHz, the other frequency JG2XA broadcasts on. I discovered it was much stronger. Oddly, over the next few days propagation prevented me from hearing the signal as strongly on either frequency. It's like that sometimes, isn't it?

    Any way, thanks again for the compliment. And, yes, I shall check out your blog.

    All the best and 73s!

    ReplyDelete