Announcement

Collapse
No announcement yet.

Question about MS and "double station" effect

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Question about MS and "double station" effect

    As a newbie, I'd like to throw out a question regarding Meteor Scatter reception and the "double station" effect. I have logged about 75 Ms bursts these past three days and have noticed that a fraction of them are different.

    What I get is an initial station burst lasting half a second to 5 seconds following up to 5 seconds later by a second station where the high end is essentially removed from the audio leaving a low frequency response.

    Has anyone experienced this? Am I getting one station off the particle burn and a second station off the burn trail?

    FYI, the Sony F1 on a quiet channel is great for Ms. The burst can easily be seen in WavePad high above the soft muting.

    Here is an example.
    K3PHL - Steve W
    Milford Square, PA (near Allentown) (FN20)


    Sony XDR-F1HD, Sony XDR-S3HD, Denon TU-1500RD, Sangean HDT-1, Tecsun PL-310
    APS-9B @ 33'
    http://home.comcast.net/~k3phl

  • #2
    Question about MS and "double station" effect

    The plot thickens. Attached here is a burst from just two hours ago. The 95.3 frequency was quiet for minutes. Then right after the burst, I received my nearest local on 95.3 WKDB @ 113 miles for a few seconds.
    K3PHL - Steve W
    Milford Square, PA (near Allentown) (FN20)


    Sony XDR-F1HD, Sony XDR-S3HD, Denon TU-1500RD, Sangean HDT-1, Tecsun PL-310
    APS-9B @ 33'
    http://home.comcast.net/~k3phl

    Comment


    • #3
      Steve, you will find that many bigger meteor bursts will be a mix of stations, often garbled.
      I'm speculating, and others may correct me when I say that as a meteor streaks through the upper atmosphere at 30,000 mph+ and creates an ionized trail, it has to be midpoint between you and the station, just like an E cloud. Multiple stations may come into view and if can be ID'ed often you will find the stations are near each other and in a line. Still.. sometimes completely different directions come in on the same burst. The only logical explanation I have for that is there are mutiple rocks in different areas at the same time. This seems to be fairly common, and "meteor storm" conditions may happen when it almost sounds like continuous Es.
      Distances I've heard "burst" signals have been as short as 170 miles, which is probably via airplane scatter, to as far as 1324 which might be "double hop Ms" during a meteor storm.
      Typical meteor scatter distances are 500-1000 miles for me. Ms distances drop off dramaticly under and over that range.
      The Sony XDR-F1HD does indeed produce well defined peaks in Wavepad but the "muted" audio on weak signals has proven difficult to catch ID's on most Ms signals here and is only a fraction of the complete signal. My most effective Ms DXing setup is using the Denon TU1500RD and just a dipole outdoors. It catches many more signals than the yagi. Today I had a 2+ minute reception of 93.9 KIAI Mason City, IA at 947 miles. The signal sounds like Es but I logged it as Ms as there was no reported Es even on 6 meters at this time across this area.

      It's fun to see what you can catch but as Russ once remarked, you will find that most of the time it's just the same stations, generally the highest powered ones, in the 500-1000 mile range.
      It's a great way to log the ones too long for usual tropo or too short for usual Es.

      Her'es the 2 minute + KIAI reception and some examples of other recent Ms ID's
      Randy KW4RZ Goldfield, Nevada DM17

      Comment


      • #4
        Here's some more examples of what to expect. A lot of luck, time recording and patience is involved with Ms DXing.


        http://members.aol.com/kw4rz/mp3/101...E_Ms_Dec13.mp3
        Meteor "swarm" mutiple pings in a burst with mutiple stations & 2 ID's, both in Indiana
        101.7

        http://members.aol.com/kw4rz/mp3/93-...s_Oct23_06.mp3
        typical choppy sounding burst, longer lasting and more solid than most. WKTG Kentucky 490 miles


        http://members.aol.com/kw4rz/mp3/99-...s_Dec12_06.mp3
        One of the weird ones with 2 ID's short and long "Bob FM" in Mississippi only 307 miles and "Fox 99" in Wisconsin 1083 miles


        http://members.aol.com/kw4rz/mp3/101...s_May07_06.mp3
        long "trailing streaker" picking up 3 stations with "The Rocket" in Missouri at 650 miles in the middle. The other two fit the formats of Missouri and Kansas stations on either side of KHST


        http://members.aol.com/kw4rz/mp3/93-...s_Oct04_07.mp3
        A nice no-nonsense ID. These don't come too often (KZRD Dodge City, KS 935 miles)

        And here's a few examples that will make you want to give it all up!

        Have fun and good luck
        Randy KW4RZ Goldfield, Nevada DM17

        Comment


        • #5
          Question about MS and "double station" effect

          Thanks for all the info and clips Randy. That is some awesome stuff. I just confirmed my first three Ms this week. I got WMGE in Miami that Nick helped me ID. Also got WRKX (Delilah and local ID). And just tonight got KGGO, Des Moines at 19:29 local.

          For those of you in urban areas, Ms is possible.

          Bring on the Ms storms cuz Es is dead on the east coast this week.
          K3PHL - Steve W
          Milford Square, PA (near Allentown) (FN20)


          Sony XDR-F1HD, Sony XDR-S3HD, Denon TU-1500RD, Sangean HDT-1, Tecsun PL-310
          APS-9B @ 33'
          http://home.comcast.net/~k3phl

          Comment

          Working...
          X