If anyone wants to look at the antennas, the exact addresses of all the FCC HF DF sites are in this document: transition.fcc.gov/omd/contracts/pre-award/RFQ11000024.pdf Type the address, city, and state of the FCC site you want to examine into Google Maps and zoom in.
There is much more information in the Google search I suggested. 73, Mike www.w0btu.com On Sun, Feb 8, 2015 at 2:11 PM, Mike Waters <[email protected]> wrote: > I didn't see the ARRL article, but I have researched this on the Web. Type > these words into Google: > > fcc hf df > > The first hit is a map of where they all are. Most are unmanned. They are > all linked to a single manned command center. > > I'm not certain what type of antennas they use. I studied the satellite > images, but all I could make out were the antenna support structures. It > looked like V-beams to me, but I'm not sure. > > 73, Mike > www.w0btu.com > > On Sun, Feb 8, 2015 at 1:18 PM, <[email protected]> wrote: > >> IIRC, quite some years ago, QST had a photo & description of a FCC >> "signal locator" (for lack of a better description) consisting of several >> remote receivers that were linked together. >> >> Anyway, these could instantly locate the origin of a skywave signal with >> a resolution of a city block(!!) using a precise timing equipment/technique. >> > > _________________ Topband Reflector Archives - http://www.contesting.com/_topband
