[BC] DTV out of band emissions

Ron Youvan ka4inm at tampabay.rr.com
Fri Jun 26 18:17:51 CDT 2009


> Does anyone have a link to FCC rules that concern HDTV emissions outside
> their assigned channel?  We have a channel 2 DTV station that is just wiping
> out the six meter band.  You would think they would be better able to
> suppress trash that is almost 4 MHz below the lower edge of their channel.
> Some of those affected are planning to do some spectrum analyzer
> measurements.  

   Right next to the edge of the "haystack" just into the next channel the signal should be 47 dB 
down from the top of the haystack.  (not counting the pilot pip)

   the rules seem to be at:  http://www.fcc.gov/mb/audio/bickel/amfmrule.html#TV

   73.624 	Digital television broadcast stations. page 207
which sends you to:

    (d) Digital broadcast television transmission standard. Effective May 29, 2008
transmission of digital broadcast television (DTV) signals shall comply with the standards for such 
transmissions set forth in ATSC A/52: ``ATSC Standard Digital Audio Compression (AC­3)''
(incorporated by reference, see § 73.8000), ATSC A/53, Parts 1­6: 2007 ``ATSC Digital Television 
Standard,''
(January 3, 2007), except for section 6.1.2    (``Compression Format Constraints'') of A/53 Part 4: 
2007 (``MPEG 2 Video Systems Characteristics'') and the phrase ``see Table 6.2'' in section 6.1.1 
Table 6.1 and section 6.1.3 Table 6.3 (incorporated by reference, see § 73.8000), and ATSC A/65C: 
``ATSC Program and System Information Protocol for Terrestrial Broadcast and Cable, Revision C With 
Amendment No. 1 dated May 9, 2006,'' (January 2, 2006)
(incorporated by reference, see § 73.8000). Although not incorporated by reference, licensees may 
also consult ATSC A/54A: ``Recommended Practice:
Guide to Use of the ATSC Digital Television Standard, including Corrigendum No. 1,'' (December 4, 
2003, Corrigendum No. 1 dated December 20, 2006, and ATSC A/69: ``Recommended Practice PSIP 
Implementation Guidelines for Broadcasters,'' (June 25, 2002) (Secs. 4, 5, 303, 48 Stat., as 
amended, 1066, 1068, 1082 (47 U.S.C. 154, 155, 303)).  ATSC A/54A and ATSC A/69 are avail-
able from Advanced Television Systems Committee (ATSC), 1750 K Street, NW., Suite 1200, Washington, 
DC 20006, or at the ATSC Web site: http://www.atsc.org/standards.html.
(Secs. 4, 5, 303, 48 Stat., as amended, 1066, 1068, 1082 (47 U.S.C. 154, 155, 303))
[28 FR 13660, Dec. 14, 1963]
   EDITORIAL NOTE: For FEDERAL REGISTER citations affecting § 73.682, see the List of CFR Sections 
Affected, which appears in the Finding Aids section of the printed volume and on GPO Access.

-- 
Ron KA4INM



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