Long Wave   Home Page

Updated 16 Mar, 2018

LW Message Board LWCA Library About the LWCA LW Lobby
Low/Med/HiFER Solar-Terrestrial Site Search Privacy/©/TOS
Many links at this site open in new tabs or windows. If they don't work, please set your pop-up blocker to allow lwca.org to open windows, or else right-click the link.

    The LOWDOWN This Month
In the March 2018 issue of the club publication:
  • "DX Downstairs" Kevin Carey presents members' LF and VLF loggings.
  • "On The Air" Experimenters operating on the 160-190kHz and lower bands... and...
  • "The Top End" MedFER and HiFER beacon lists, and..
  • "The LF Notebook" Conducted by John Davis. News from, for and about LWCA members. This month, honoring two contemporary LF enthusiasts who've made valuable contributions to science and technology.
  • "News From the Old World" Alan Gale keeps us informed of latest LF news from the "other side of the pond."
  • "Natural Radio" by Rick Ferranti. Practical considerations for a Natural Radio expedition.
  • "600 Meter Snapshot" More excerpts from the latest quarterly report by Fritz Raab.

Interested in subscribing? Click here for address, rates, and remittance information (including PayPal).

   MRHS Coastal Heritage Station Ends Drought
KPH, KFS and K6KPH Return To The Air on Saturday 17 March

      Chief Operator Richard Dillman announced on Friday 16 March that the famed California coastal stations had been off the air for an extended time, but would be returning this weekend (at least on HF). "On-air operations were suspended some months ago due to antenna maintenance issues. Some of those issues have now been resolved with the result that a partial return to operation is now possible."
      KPH, KFS and K6KPH are now capable of operating on these Morse frequencies: KPH 8642.0, 12808.5, 17016.8; KFS 12695.5; K6KPH 14050 kHz.
      Dillman says, "We expect continued operation on these frequencies each Saturday with more to be added as additional antenna problems are resolved." There is no word at this time about 500 kHz and lower frequencies.

   Sub-Radio Amateur Record Set
First known East-West transatlantic crossing below 8.3 kHz.

      On the night of February 18-19, Jay Rusgrove W1VD in Connecticut copied the 8270.100 Hz signal of Stefan Schaefer DK7FC from Germany, the first known successful E>W Atlantic crossing in what is sometimes called the Dreamers Band. The message consisted of a single character sent in a BPSK-based format known as EbNaut. With a symbol length of 30 seconds, GPS-locked frequency stability and timing is required at both the sending and receiving ends, and the "message" may have to accumulate across many repetitions to start to be decoded. The single character in this message was decoded in a single night; longer messages can require files recorded over multiple nights to be "stacked" (overlaid in processing).
      To prove the first copy was not a fluke, Stefan switched to a two-character message which, after several difficulties at both ends of the path, was decoded by Jay on the morning of February 25. This time, it required stacking three nights' reception files to decode both characters.
      Previously, EbNaut signals from VO1NA in Newfoundland had been copied in Europe over a somewhat shorter W>E path, and on Dec 26-27, 2017, a three-character message from W4DEX was received in Italy by Renato Romero IK1QFK on 8269.9 Hz, a new record distance for decoding at 4,447 miles (Renato had previously detected an unmodulated singal from Dexter over the same path). More on the mode can be found at www.abelian.org.

   LF-MF Ham Rules in Effect
Many amateurs have received operating approval.

      The Federal Communications Commission rules for the 630 and 2200 meter ham bands, are outlined in the FCC's recent Report & Order, were published in the Federal Register in June, and finally took effect on September 15, 2017, after procedures were worked out for the required PLC frequency coordination with Utilities Telecom Council. Details can be found in this post by W1TAG. Most of the new activity, as expected, has been at 630 meters, but more stations are gradually showing up on 2200 m.
      In addition to these two new WRC bands, the Docket 15-99 changes will relieve HiFER hobbyists of CODAR interference in a few years, elevate the status of amateur operation between 1800 and 2000 kHz, and impact experimentation below 9 kHz as well, because radio spectrum is now formally allocated down to 8.3 kHz.

LW Resources & Additional Topics

   Related Longwave Sites

      •William Hepburn's DX Information Centre has probably the best online list of aero and marine beacons based on official license information, plus lists of time signals and numerous resources for other types of DXing as well.
      •The searchable RNA database of LF beacons...not compiled from official sources, but a digest of signal reports from experienced listeners in North and Central America. It's a great tool for identifying those unknown signals. It won't always be up-to-date regarding decommissioned beacons, of course. This might somewhat limit its usefulness in targeting specific beacons to listen for, but it's still helpful if you pay attention to the most recent reported date for a given beacon.
      •Gunter Lorenz' VLF/LF Station List. More recently updated than some other VLF military/utility station lists; but as with any amateur band, take the listings around 137 kHz with a grain of salt.
      •LF/MF Amateur Radio Sites. Now that the 2200 and 630 meter bands are finally available in the US to amateurs, not just Part 5 licensees, there's even more interest in websites about ham operation. We'll be adding more links soon, but for now we'll begin with:
            - John Langridge's Site including 630 m QSO List
            - www.500kc.com Ralph M. Hartwell W5JGV documents (mainly the history of) the WD2XSH Part 5 license and its participants.
      If you know of more ham sites that should be included, or find broken links, please advise us at mb@lwca.org ASAP.
      •Radio Waves Below 22 kHz Renato Romero's eclectic collection of topics pertaining to both manmade and natural radio signals from near DC to the upper end of audibility. Includes the VLF Open Lab, and articles by many contributors...some fairly orthodox, and some not. Visit: www.vlf.it
      Not viewable online but a resource which can be ordered there...Michael Oexner's North American and European NDB Handbooks, now updated for 2018 (click link for info in PDF form). In addition to the two regional versions, Michael now offers a combined Global edition (CD & download only).

   QRSS and WOLF Software

      Rik Strobbe's QRSS software (for transmitting extremely slow CW) and Rik's other useful software at the ON7YD download page.
      Continuing Development of Argo. Alberto di Bene posts the latest version of Argo, a receiving tool for displaying slow CW, that performs FFT spectral analysis and displays it in ways optimized for QRSS. Many of the transoceanic LF amateur records were set using Argo at the receiving end. Argo has somewhat similar performance to Spectran, but interacts better with the user's soundcard and is customized for QRSS modes.
      WOLF. Stewart Nelson devised this unique mode, a variant of BPSK. See his announcement of the MS-DOS version for more details. Now, a GUI-based version by Wolf Büscher continues to increase the mode's popularity. Find the new software at the DL4YHF site.
      Spectrum Lab, at that same link, is another of Wolf's creations. In conjunction with your computer's sound card, not only is it an especially advanced spectrum analyzer, but it's also a filtering and sound processing tool, and can serve as the demodulator part of a software defined receiver.
      Slow CW for Linux. Claudio Girardi (IN3OTD) has released Slow CW software for users of the Linux operating system, currently v 0.42. The program (called glfer) contains both transmit and receive capability, the latter including an FFT-based spectrum analyzer somewhat similar to those found in popular Windows Slow CW programs. As with much open-source software in the X-world, you have to compile the C source code yourself. Users will also need additional code libraries. Links to those, plus downloadable source code, can be found at Claudio's glfer page.

Visits since last reset, 1 Jan 2018: 50620