The LOWDOWN This Month|
In the December 2013 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 136kHz bands... and...
- "The Top End" MedFER and HiFER beacon lists... and ...
- "The LF Notebook" Conducted by John Davis. This month, some personal holiday reminiscences, plus myriad unexpected connections between the VLF alternator at SAQ and other surprising areas of technology.
- "News From the Old World" Alan Gale keeps us informed of LF experimentation on the "other side of the pond."
- "Natural Radio" Conducted by Mark Karney.
- "On the Longwave Trail: China" Kriss Larson KR6ISS explores LF radio in another fascinating part of the world.
- "600 Meter Groundwave Propagation" Report by Fritz Raab with more details on last summer's experiment.
In Coming Issues... an antenna distribution amplifier project for feeding multiple receivers, thoughts on balanced transmission lines for receiving, and significant anniversaries galore!
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| ||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 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, which limits 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.
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
| ||QRSS and WOLF Software
Rik Strobbe's QRSS software (for transmitting extremely slow CW) is usually available from our file library, but while it is temporarily out of service, you can obtain QRSS and Rik's other useful software at the ON7YD download page.
Continuing Development of Argo. Alberto di Bene regularly 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 Buscher continues to increase the mode's popularity. Find the new software at the DL4YHF site.
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.
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