Topband: FCC HF actions

wb6tza at wb6tza at
Wed Mar 5 15:39:09 EST 2003

That bothered me, too, until I looked down the far right column, shows part 
97 and part 90 for 1900-2000.  its typical - totally obscure!

bottom line is the three left columns - the international allocations - 
region 1 does not have use of 1800-1810, and is limited to 1810-1850, this 
is the significant limitation on the band - at least the table says that 
amateurs are the sole occupant of 1810-1850 - (and if you believe that, 
send me the check for the bridge!)

Region 2 amateurs are primary in 1800-1850 with no co users, primary in 
1850-2000 with many additional users

Region 3 amateurs appear to be primary with many additional users for all 
of 1800-2000

The right half is what the FCC did with it
1800-1900 amateur appears to be primary and the sole occupant
1900-2000 Radiolocation is primary and part 90 is secondary and amateurs 
are third

this is interpreted by the order of the entries, not from the detail of the 
rules, and it is consistent with my understanding all along



At 11:58 3/5/2003, Jon Zaimes AA1K wrote:
>Looks like we will be seeing more radionavigation signals in the 1900-2000 
>kHz segment:
>"20. In order to protect the technical integrity of the AM Expanded Band, 
>we are deleting from the U.S. Table the U.S. Government and non-U.S. 
>Government secondary radiolocation allocation in the band 1605-1705 
>kHz.  We find that these radiolocation operations can be relocated to the 
>band 1900-2000 kHz without significant impact to current 
>operations.  Consistent with this action, we are removing the band 
>1605-1705 kHz from the Radiolocation Service Frequency Table in Section 
>90.103 of our Rules and deleting unneeded assignment limitations."
>Also, in the table at the end, it only lists the amateur segment in the 
>U.S. as 1800-1900. No mention (or footnote) of secondary use of 1900-2000 
>kHz. Is this a change or is there a footnote somewhere else that covers 
>73/Jon AA1K
>At 04:59 AM 3/4/03, you wrote:
> >While this docket deals primarily with HF broadcasting matters, it does 
> comment on several areas of interest, and it contains the latest table of 
> HF allocations.
> >
> >
> >
> >its somewhat lengthy, but makes interesting reading
> >
> >Interesting definition of both Interference and Harmful Interference - 
> Footnote 7 beginning on Page 2
> >
> >robin critchell, WA6CDR
> >
> >_______________________________________________
> >Topband mailing list
> >Topband at
> >

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