[Swprograms] OT BPL: US NTIA Supports Protection of SW Broadcasting

[Joe Buch <joseph.buch@xxxxxxx>]

The NTIA has released their report on BPL.  They support the NASWA position that FCC must protect international broadcasting. NTIA says, "Protecting other administrations' broadcasting is critical because of reciprocity."  Yahoo!  Here is what they say in Appendix C of their report some of which will be quoted in the NASWA filing to be submitted next Monday:

C.2.6 	Broadcasting Service

	In the Federal Government, HF broadcasting from the U.S. is conducted by the Broadcasting Board of Governors (BBG).  The BBG has the mission to promote understanding abroad of the United States, its policies, its people, and its culture.  HF radio is a very practical means of communicating directly with the people of other nations because of the extensive availability of inexpensive broadcast receivers.  The BBG's global radio network, the Voice of America (VOA), consists primarily of two powerful HF transmitter sites (located in California and Virginia).

	The power levels for equipment at VOA installation can be as high as 500 kW.  The modulation designator typically is 10K00A3E.  This accommodates a 10 kHz bandwidth signal, amplitude modulation, and audio communication.  A multi-band, curtain-array antenna is a representative type of antenna for VOA broadcast installation.

	While the intended receivers of the VOA's transmissions generally are abroad there are numerous broadcasting receivers owned and operated by foreign citizens and government personnel in the United States that could be susceptible to BPL interference because of proximity to power lines.  Protecting other administrations' broadcasting is critical because of reciprocity.  The current ITU-R B-03, Seasonal Broadcasting Schedule, shows multiple administrations broadcasting to the United States for every timeframe within a 24- hour period. 

	The 18 bands allocated to the Federal Government for broadcasting service in the HF portion of the spectrum are listed in Table C-11.  Because of frequency reuse capabilities inherent in HF broadcasting, one should expect that broadcast receivers located in the United States are tuned within these bands.

Table C-11: Frequency Bands Allocated to the Federal Government for 
Broadcasting Service in the 1.7-80 MHz Band
Frequency (kHz)	BW (kHz)	Frequency (kHz)	BW (kHz)	Frequency (kHz)	BW (kHz)
5900-5950		50		11650-12050		400		15600-15800		200
5950-6200		250		12050-12100		50		17480-17550		70
7300-7350		50		13570-13600		30		17550-17900		350
9400-9500		100		13600-13800		200		18900-19020		120
9500-9900		400		13800-13870		70		21450-21850		400
11600-11650		50		15100-15600		500		25670-26100		430

Total Bandwidth (BW) = 3,720 kHz

You can use this link to get the entire report:

<http://www.ntia.doc.gov/ntiahome/fccfilings/2004/bpl/index.html>


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Joe Buch
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