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 DX 
  Split Operations - When and How?

What is DX?
  • Some people say the "D" in DX stands for Distance, and the "X" stands for the unknown, meaning hearing unidentified stations until identified. Others simply say the whole "DX" term means distance. FM DXing is the hobby of hearing distant stations on the FM band (88-108 MHz). It's not as difficult as you may think. All it requires is a little time and patience. .

    What is DXing?
  • It is a slang term for preforming DX, listening to DX (so if you were listening to a station via DX then you are DXing).

    What can DX cover?
  • DX can really cover the whole communications band, anything from police scanner frequencys to airplane control frequencys. But, DX is most common and most interesting in the FM, AM, and TV bands.

    What do I need to DX?
  • It is best to have a good recevier with great sensitivity and a great antenna (preferably on the roof or near a window). In other words, the better your equipment is, the better your reception and DX preformance is. You can though if you don't have a receiver or a roof antenna DX on a boombox or any portable (not-hooked-up-to-cable) television, using its telescoping antenna to search for distant stations.

    How do I DX?
  • Its simpler than you think. Before you even think of starting to DX, memorize or write down all of your local FM and TV stations, so you will recognize them when you hear them and you won't mistaken them for a distant station. All you do is turn on your radio or TV, and scan the FM, AM, and TV dials until a station that is not local shows up. You can watch/listen to the out of town station as long as you want, but it is wiser to continue to scan the dials to hear/see more distant stations. As you hear new stations, write them down in your log.

    When should I DX?
  • It depends on what method of signal propagation you want to DX using. For Tropospheric Ducting DXing, it is best to DX anytime from 8PM through 7AM, with the best times usually around 2AM through 6AM. For Sporadic E-Skip DXing, it could happen any time of any day of the week of the year, but it is wise to check the radio/tv dials from 5:30AM to 6PM. It is though not rare at all to have E-Skip reception come in at Midnight or 2AM! It is best to DX via Tropospheric Ducting in the warmer months (March-September) because troposperhic ducting is directly related to warmer weather. For E-Skip, it is basically the same, it works best in the warmer months, with peaks in June and July. In the colder months usually no DX at all happens, unless there is some unseasonly warm weather happenning.

    Where should I DX?
  • The best place to record airchecks is as high as possible, as close to a window as possible. You will definately get better reception from the top floor of your house (using a boombox or indoor antenna) or outside (with a roof antenna on your roof) versus recording in the basement or in a room in the middle of the house (using a boombox or indoor antenna). Now if you have a roof antenna with a cord running from it to any room in your house (like a basement, room in the middle of your house) then it is fine, because the reception is coming from the roof antenna instead of an antenna in the room of the radio receiver.

    You mentioned a log earlier, what is it, and why do I need a log?
  • I was referring to a DX Log, which you write all of your stations you get via DX into. It is not needed, but it is great to have to keep a record of what stations you get via DX.

    Why DX?
  • To those who don't do it, trying to listen through static and scanning the dials might sound sort of odd. Most DXers think its interesting hearing/seeing what different stations around the nation sounds like. I also like to compare those far-away stations to my local stations to find out which is better.

    What is grayline propagation ?
  • The grayline is a virtual line which divides the earth in the day and the night side. When 1 radiostation is in the dusk and the opposite station is in the dawn, there is a possibility for so called 'grayline propagation'. At sunrise the D-layer builds up slowly and at sunset it disappears slowly again. During this change, low frequencies are not absorbed but refracted by the D-layer and they will enter the F-layer with a much lower wave angle than normal. In this way longer distances can be used for propagation on the lower bands. Grayline propagation occurs in general on the 1.8, 3.5, 7 and 10 MHz bands and the paths will be in the dark.
    A graphical representation is given below.