<div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(0,0,0)">Another threat to our bands?</div><div><div class="gmail_signature"><div dir="ltr"><font face="courier new, monospace" color="#0000ff"><b><br></b></font></div><div dir="ltr"><font face="courier new, monospace" color="#0000ff"><b>73 Karl W4KRL</b></font></div><div dir="ltr"><font face="courier new, monospace" color="#0000ff"><b><br></b></font></div><div dir="ltr"><font face="courier new, monospace" color="#0000ff"><b><a href="http://www.tvtechnology.com/distribution/0099/list-of-experimental-licenses-reveals-interesting-hf-data-comm-experiments/274152">http://www.tvtechnology.com/distribution/0099/list-of-experimental-licenses-reveals-interesting-hf-data-comm-experiments/274152</a><br></b></font></div><div dir="ltr"><font face="courier new, monospace" color="#0000ff"><br></font></div><div dir="ltr"><font color="#000000"><div dir="ltr" style="font-family:'courier new',monospace"><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(0,0,0)"><b><u>Abstract</u></b></div><br></div><div dir="ltr"><font face="arial, helvetica, sans-serif">Ham radio operators have been using the shortwave (“high-frequency” or HF) bands for data communications for over 50 years, but the data rates are much less than those available with dial-up modems. HF communications have the advantage that they don't depend on vulnerable satellites, don't require line-of-sight, and can cover huge distances under the right conditions.</font></div><div dir="ltr"><font face="arial, helvetica, sans-serif"><br></font></div><div dir="ltr"><font face="arial, helvetica, sans-serif">The FCC recently granted two companies experimental licenses to use HF bands for data communications at far greater bandwidths and data rates than have been used by amateur radio operators. While these communication systems are being developed for the military, it’s possible some of the techniques developed could be used for digital broadcasting in the AM band, or more likely for shortwave broadcasting where sky wave propagation is important.</font></div><div dir="ltr"><font face="arial, helvetica, sans-serif"><br></font></div><div dir="ltr"><font face="arial, helvetica, sans-serif">According to the commission’s Office of Engineering and Technology Experimental Licensing Branch's list of experimental applications between 10/1/14 to 10/31/14, license WH2XCI was granted to The MITRE Corporation to operate in the 2505.00 - 4100.00, 4210.00 - 4995.00, 5005.00 - 6210.00, 6320.0 - 8250.00, 8450.00 - 9995.00, 10005.00 - 12200.00, 13500.00 - 14990.00 and 15010.00 – 16000.00 kHz bands to test HF communications at fixed locations in Bedford and Worcester in Massachusetts and Oneida and Rome in New York.</font></div><div dir="ltr" style="font-family:'courier new',monospace"><br></div></font></div></div></div>
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