Disturbing news for HF

[Karl W4KRL]

Another threat to our bands?

*73 Karl W4KRL*


*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>*

*​Abstract​*

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.

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.

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.
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