Re: North Korea satellite: search elements

From: Robert Knight (theknightreport@gmail.com)
Date: Thu Apr 12 2012 - 18:36:51 UTC

  • Next message: David Tiller: "RE: North Korea satellite: search elements"

    In the United States, 470 MHz is part of the unlicensed “ISM” (Industrial,
    Scientific and Medical) band -- often used for such protocols as WiFi,
    Bluetooth, Z-Wave, *etc.*  It’s also referred to as a “TV white space,” or
    unused television broadcasting frequency.
    
    However, in the DPRK (“North Korea”), the 470 MHz frequency has been
    adopted by the Korea Communications Commission as a digital TV frequency,
    corresponding to DPRK’s digital channel 14, part of a new nationwide
    television service.
    
    
    
    Hence, Pyongyang’s announced plan to *“broadcast revolutionary songs at 470
    MHz,”* [thereby theoretically accessible to North Korean television
    consumers] is – on the face of it – *eminently plausible*, IMHO.
    
    *
    *
    *-Robert Knight
    Senior National Correspondent
    **
    **"Five  O'Clock  Shadow"
    *WBAI . 99.5FM . wbai.org
    *
    *
    
    On Thu, Apr 12, 2012 at 1:22 PM, <kd6nrp@earthlink.net> wrote:
    
    > Good Morning:
    >
    > I wonder if the 470 MHz region of the radio spectrum is heavily used in
    > South Korea, China, or Japan. If 470 MHz is heavily used in the region, it
    > would cast some doubt on North Korea's claim that they are launching a
    > satellite.
    >
    > After all, you would want to select a quiet portion of the spectrum for
    > the satellite downlink to make the signal easier to hear.
    >
    > If this is an ICBM test, it is logical to assume that the North Koreans
    > would want to collect engineering data (radar tracking information,
    > telemetry, and so on) during the entire flight in order to assess the
    > vehicle's performance.
    >
    > Have there been any reports of North Korean range support ships or
    > trawlers being seen downrange? A logical location for such a ship would be
    > near the third stage impact area or a potential payload splash point.
    >
    > Regards,
    >
    > Brian Webb
    >
    > -----Original Message-----
    > >From: Martyn Williams <martyn@gmail.com>
    > >Sent: Apr 12, 2012 9:00 AM
    > >To: Ted Molczan <ssl3molcz@rogers.com>
    > >Cc: seesat-l@satobs.org
    > >Subject: Re: North Korea satellite: search elements
    > >
    > >Ted,
    > >
    > >Subsequent to the original announcement, the North Koreans said the
    > >satellite will also broadcast revolutionary songs "at 470MHz."
    > >
    > >This is the same intention that was made last time. A more precise
    > >frequency wasn't mentioned.
    > >
    > >Martyn
    > >
    > >> The payload reportedly carries UHF and X-band transmitters. If anyone
    > has reliable information on its precise radio
    > >> transmission frequencies, or advice on the most likely frequency
    > ranges, please feel free to share via the list.
    > >
    > >
    > >--
    > >Martyn Williams
    > >2012 Knight Journalism Fellow
    > >Stanford University
    > >_______________________________________________
    > >Seesat-l mailing list
    > >http://mailman.satobs.org/mailman/listinfo/seesat-l
    >
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