Goto Section: 73.755 | 73.757 | Table of Contents

FCC 73.756
Revised as of October 1, 2014
Goto Year:2013 | 2015
§ 73.756   System specifications for double-sideband (DBS) modulated
emissions in the HF broadcasting service.

   (a) Channel spacing. The nominal spacing for DSB shall be 10 kHz.
   However, the interleaved channels with a separation of 5 kHz may be
   used in accordance with the relative protection criteria, provided that
   the interleaved emission is not to the same geographical area as either
   of the emissions between which it is interleaved.

   (b) Emission characteristics--(1) Nominal carrier frequencies. Nominal
   carrier frequencies shall be integral multiples of 5 kHz.

   (2) Audio-frequency band. The upper limit of the audio-frequency band
   (at--3 dB) of the transmitter shall not exceed 4.5 kHz and the lower
   limit shall be 150 Hz, with lower frequencies attenuated at a slope of
   6 dB per octave.

   (3) Modulation processing. If audio-frequency signal processing is
   used, the dynamic range of the modulating signal shall be not less than
   20 dB.

   (4) Necessary bandwidth. The necessary bandwidth shall not exceed 9
   kHz.

   [ 70 FR 46677 , Aug. 10, 2005]

   return arrow Back to Top


Goto Section: 73.755 | 73.757

Goto Year: 2013 | 2015
CiteFind - See documents on FCC website that cite this rule

Want to support this service?
Thanks!

Report errors in this rule. Since these rules are converted to HTML by machine, it's possible errors have been made. Please help us improve these rules by clicking the Report FCC Rule Errors link to report an error.
hallikainen.com
Helping make public information public