I spent part of the last night on HF and found many of the bans in poor shape to closed so I went down below the AM Broadcast bands to see what I could hear. I was surprised today to see that CQ magazine had a really nice article on LF Beacons. The article was written with the perspective of the possible upcoming of a new Amateur LF Band.
This web site has a great listing of LF Beacons:
Low Frequency Beacon Listing.
In addition this web site has a lot of information on many different utility communications. Be sure to have a look around at the info!
Last nights Logging at approximately 10 PM EDT.
346 Khz. YXL Sioux Lookout Ont, Ca
366 Khz YMW Manawiki, QB, Ca.
382 Khz YPL Pickle Lake, Ont
379 Khz IVV Lebanon - White River, New Hampshire
408 Khz SN St Catheriens, Ont.
516 Khz YWA Petawawa, Ont
From Wikipedia
Non-directional beacon
From Wikipedia, the free encyclopedia
Radio Tower of NKR Leimen-Ochsenbach, Germany
This symbol denotes an NDB on an
aeronautical chart. A hollow square superimposed on this symbol indicates a collocated
DME installation.
A
non-directional (radio) beacon (
NDB) is a
radio transmitter at a known location, used as an aviation or marine
navigational aid. As the name implies, the signal transmitted does not include
inherent directional information, in contrast to other navigational aids such as
low frequency radio range,
VHF omnidirectional range (VOR) and
TACAN. NDB signals
follow the curvature of the Earth,
so they can be received at much greater distances at lower altitudes, a
major advantage over VOR. However, NDB signals are also affected more
by atmospheric conditions, mountainous terrain, coastal refraction and
electrical storms, particularly at long range.
Wikipedia NDB entry