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  • Saturday, December 24, 2011

    7000 kHz free again!

    7410 kHz – All India Radio with spurious emissions


    The screenshot below is showing the spurious emissions by All India Radio on 7000 Hz on Dec. 17th at 1900 UTC in  Central Europe. I found the broadband signal the first time on Dec. 1st and believed to hear a military signal. Later I found out, that All India Radio was transmitting on 7410 kHz and producing strong spurious emissions on 6860 – 7040 and 7800 - 7880 kHz. (80 kHz spread!) Together with Mr. E.G. from the German PTT (BNetzA) I took measurements and bearings. The German PTT filed an official complaint to the Indian authority. Grateful words to HB9CET, DJ9KR, PA2GR, VK4TJ for observations and to VU2GMN for actions. Thanks to the German PTT (BNetzA) for the fast support. A Perseus SDR is an excellent gear, if you want to observe broadband emissions! On Dec. 24th the signals disappeared. A nice Christmas present! I was rather astonished, that I did not get any complaint or request by radio amateurs for more than 3 weeks of disturbations.

    Season´s Greetings from DK2OM!

    Via IARU - Read the full Article