Wednesday 25 March 2020

Hunting For NDBs In CLE254




Once again it's a CLE weekend.

During these stressful times, the CLE might hopefully provide some peaceful relief for you.






'CLE's are 'Co-ordinated Listening Events, and NDB DXers around the world focus their listening time on one small slice of the NDB spectrum.

This time the hunting ground is the 20 slice from 400.0 - 419.9 kHz. kHz

A good target for this one is MOG (404kHz) in Montague, California, up near the border with Oregon. It gets out very well and has been logged from Finland to Hawaii. Its been on-and-off of late so maybe you can catch it while it's on again!

Listen for MOG's upper sideband on 405.027kHz with your receiver in the CW mode.

From CLE coordinator Brian Keyte (G3SIA), comes the following CLE info:

Hello all,

Our 254th Coordinated Listening Event starts on Friday.
This frequency range is not packed with signals for any of us, but if conditions are OK there should be some nice surprises.

Do join in, whether you have days to spare, or only an hour or so over the weekend.  Staying at home seems to be essential advice for most of us at present - this could be a great way of spending time there!

    Days:    Friday 27 March - Monday 30 March 2020
    Times:   Start and end at midday your LOCAL time
             (Many of us will be changing our home clocks this weekend -
               however UTC time continues unaffected)
    Range:   400 - 419.9 kHz

Please log all the NDBs that you can identify with nominal (listed) frequencies in the range - it includes 400 kHz, but not 420 kHz - plus any UNIDs that you come across there.

Send your final log to the List (no attachments please and ideally in a plain text email) with ‘FINAL CLE254’ in its title.

Show on each line:
    #   The Date (e.g.  '2020-03-27', etc.,  or just '27' )
    #   The Time in UTC (the day changes at 00:00 UTC).
    #   kHz  - the nominal published frequency, if known.
    #   The Call Ident.

Please show those main items FIRST.  Other optional details such as Location and Distance go LATER in the same line.
As always, of course, tell us your own location and brief details of the equipment that you were using during the Event.

We will send the usual 'Any More Logs?' email at about 19:00 UTC on Tuesday so that you can check that your log has been found OK.
Do make sure that your log has arrived on the List by 08:00 UTC on Wednesday 1 April at the very latest.
We hope to complete making the combined results within a day or two.

You can find full details about current and past CLEs from the CLE page http://www.ndblist.info/cle.htm   It includes access to CLE254 seeklists for your part of the World, prepared from the previous loggings in Rxx.  (Thanks, Martin and Alan, for your help with that)

Good listening
 - enjoy the CLE and do take care of yourself and your family.
      Brian and Joachim
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From:      Brian Keyte G3SIA      ndbcle'at'gmail.com
Location:  Surrey,  SE England     (CLE coordinator)
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  (If you would like to listen remotely  you could use any one remote
  receiver for your loggings, stating its location and owner and with their
  permission if required.  A remote listener may NOT also use another
  receiver, local or remote, to make further loggings for the same CLE)

These listening events serve several purposes. They:
  • determine, worldwide, which beacons are actually in service and on-the-air so the online database can be kept up-to-date
  • determine, worldwide, which beacons are out-of-service or have gone silent since the last CLE covering this range
  • will indicate the state of propagation conditions at the various participant locations
  • will give you an indication of how well your LF/MF receiving system is working
  • give participants a fun yet challenging activity to keep their listening skills honed
Final details can be found at the NDB List website, and worldwide results, for every participant, will be posted there a few days after the event.


The NDB List Group is a great place to learn more about the 'Art of NDB DXing' or to meet other listeners in your region. There is a lot of good information available there and new members are always very welcome. As well, you can follow the results of other CLE participants from night to night as propagation is always an active topic of discussion.

You need not be an NDB List member to participate in the CLEs and all reports, no matter how small, are of much value to the organizers. 

Remember - 'First-time' logs are always VERY welcome!

Reports may be sent to the NDB List Group or e-mailed to CLE co-ordinator, Brian Keyte (G3SIA), whose address appears above. If you are a member of the group, all final results will also be e-mailed and posted there.

Please ... give the CLE a try ... then let us know what NDB's can be heard from your location! Your report can then be added to the worldwide database to help keep it up-to-date.

Have fun and good hunting!


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