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Thread: DX: What's Possible? Primer for new DXers

  1. #21
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    <Here are some very basic *general* laws.

    Es occurs 9am to 9pm. Tropo 9pm to 9am. >

    I have to dispute this. It simply isn't supportable. I have at many times and in many locations observed DX via these modes at almost any time of the day, and I've seen numerous reports from others as well.

    One might be able to say that Es occurs more frequently within the hours noted above, but one could not say the same for tropo events, as I can vividly recall tropo events over the years where the tropo persisted 24/7 for 2 or 3 days.
    Russ Edmunds
    15 mi NW Philadelphia, PA
    WB2BJH -- Grid FN20id
    Yamaha T-80 & Conrad RDS Manager;
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  2. #22
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    I've DX'ed FM at least somewhat seriously in NJ, EPA, NE ME, Central GA, and SE VA, so I know that there are substantial variations. What Gulf Coast DX'ers experience in
    terms of tropo is quite different from what DX'ers elsewhere experience. But my point was that in something intended to instruct beginners, I think we are better served to
    provide info in simple terms, but not to mislead. Generalizations ( and I forget which famous person once said "All generalizations are false, including this one" ) can be misleading, and I believe that to be true in this case - it's too easy for a beginner to draw erroneous conclusions.
    Russ Edmunds
    15 mi NW Philadelphia, PA
    WB2BJH -- Grid FN20id
    Yamaha T-80 & Conrad RDS Manager;
    Yamaha T-85 & Conrad RDS Manager;
    Onkyo T450RDS; 4) Tecsun PL-310;
    Sony XDR-S3; Sony ICF2010; all w/ APS-9B @ 15';
    Sony ICF2010 barefoot w/ whip


  3. #23
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    South Louisiana
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    Danny I wouldn't delete any posts, nor would I apologize for any statements made. I believe every member here understood what you meant. Of course there are exceptions to that rule. As far as newbies go...there is a learning curve that goes with any hobby. It wouldn't take a newbie long to realize there isn't really a switch that turns propagation on at 9am then off at 9pm. It's hard to imagine that the omission of one little word "most", could cause such a stir from a member. I think his response to what you said was a little too direct, and could have been worded in a more respectful manner. I think you deserve that much. After all...you sir, have made enormous contributions to the forum, and the hobby.
    mike
    TVDXing since 7/27/09

  4. #24
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    Many thanks, Mike.
    Danny
    Shreveport, LA
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  5. #25
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    One thing to remember is that we're writing in generalizations. There are exceptions to everything said in these posts, of course, but we're making generalizations here. To cover all bases, let's just say that your mileage may vary.
    Mike B.
    Enfield, CT
    -72 30' W/41 59' N
    FN31RX

    Online since 1999 and still going at
    mikesdx.com

    Archives: The Original Mike's TV/FM Page with Tuner Mods and Lots of Old Stuff

  6. #26
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    Reading articles about propagation, watching videos, and listening to audio clips are very useful for DXers.

    However, my feeling is that all of the talk, articles, videos, and audios in the world won't replace actual DXing experience
    in understanding the differences in propagation modes.

    As far as generalizations and exceptions go, a newcomer will understand that Es and tropo events can occur at any time
    if he/she reads Doug's original post.
    Danny
    Shreveport, LA
    Mexico/Latin America TV DX ID Tips http://www.tvdxtips.com
    Submit and read DTV Stats http://www.tvdxexpo.com/dtvdxrecords.html
    TV and DTV DX Photographs http://www.tvdxexpo.com
    My Photographs of 100 Mexico TV DX Local IDs http://www.tvdxexpo.com/100mexicotvids.html
    More than 1,100 TV logs since 1994

  7. #27
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    In doing a little bit of research, I've come to this conclusion: While 9am to 9pm tropo is not common in
    some regions, afternoon tropo (especially on FM) is indeed more common in other regions.

    However, it appears that the number of *daytime* tropo events in one year is not as plentful as the number
    of *daytime* E-skip events during a one-year period.

    Nevertheless, my words about 9 - 9 are *not* correct for every region.
    Last edited by Danny; 12-24-2013 at 05:36 PM.
    Danny
    Shreveport, LA
    Mexico/Latin America TV DX ID Tips http://www.tvdxtips.com
    Submit and read DTV Stats http://www.tvdxexpo.com/dtvdxrecords.html
    TV and DTV DX Photographs http://www.tvdxexpo.com
    My Photographs of 100 Mexico TV DX Local IDs http://www.tvdxexpo.com/100mexicotvids.html
    More than 1,100 TV logs since 1994

  8. #28
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    Often during trans-gulf tropo conditions during the day propagation over land will dissipate but continue over water allowing coastal Texas and Mexican FM stations to be received easier. I made this FM Es graph some time ago based on all signals logged from 2005-2009. A lack of targets beyond 1500 miles due to endpoint being in rural Rocky Mountain regions or over water certainly lowers the higher numbers.Click image for larger version. 

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    Randy KW4RZ Fort Walton Beach, Florida panhandle EM60

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