[AMRadio] AM IARU Region 2 Bandplan


Bob Macklin macklinbob at msn.com
Wed Mar 10 23:20:02 EST 2010


Since I got my ticket in 1957 DSB AM was defined as 6KC B/W.

Title 47, Part 2.202 does define the bandwidth for DSB AM as 6KHz.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
----- Original Message ----- 
From: "Paul Christensen" <w9ac at arrl.net>
To: "Discussion of AM Radio in the Amateur Service" 
<amradio at mailman.qth.net>
Sent: Wednesday, March 10, 2010 7:47 PM
Subject: Re: [AMRadio] AM IARU Region 2 Bandplan


>> "No place in Part 97 is the bandwidth for eater SSB or AM defined."
>
> Section 97.307(a) is the closest regulation we have pertaining occupied
> bandwidth in the American amateur service.  However, some folks have 
> argued
> that Sections 2.201 and 2.202 apply to the Part 97 service since Section
> 97.307(a) states:
>
> "No amateur station transmission shall occupy more bandwidth than 
> necessary
> for the information rate and emission type being transmitted, in 
> accordance
> with good amateur practice."
>
> Then, Section 2.202 defines "necessary bandwidth" and "occupied bandwidth"
> based on class of service.
>
> http://edocket.access.gpo.gov/cfr_2008/octqtr/47cfr2.201.htm
>
> http://edocket.access.gpo.gov/cfr_2008/octqtr/47cfr2.202.htm
>
> Reading Sections 2.201-2.202 together, the FCC has already incorporated 
> much
> of the ITU's bandwidth and emission designators from Appendix 1 of its
> bandwidth recommendations.
>
> http://life.itu.ch/radioclub/rr/ap01.htm
>
> To the best of my knowledge, the FCC has never formally relied upon 
> Sections
> 2.201-2.202 when addressing bandwidth concerns in the Part 97 service.
>
> Paul, W9AC
>
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