[BC] Loss of signal beyond the 1 mv/m 50:50 contour

[Mark Humphrey]

On the FM band, the problem is not quite as bad as I had expected.
The degree of interference beyond the FCC F 50,50 contour depends
greatly on local terrain; obviously flat areas will be affected much
differently than hilly regions.

There are plenty of short-spaced co-channel and first-adjacent pairs
in my area, so I've made some interesting observations while driving
around.

On AM, the lawyers are already getting involved.  I found these while
searching ECFS under Docket 99-325:

WRKL's complaints against WCBS:
http://gullfoss2.fcc.gov/prod/ecfs/retrieve.cgi?native_or_pdf=pdf&id_document=6518808409
http://gullfoss2.fcc.gov/prod/ecfs/retrieve.cgi?native_or_pdf=pdf&id_document=6518912523
http://gullfoss2.fcc.gov/prod/ecfs/retrieve.cgi?native_or_pdf=pdf&id_document=6518913456

WCBS response:
http://gullfoss2.fcc.gov/prod/ecfs/retrieve.cgi?native_or_pdf=pdf&id_document=6518919218

Mark



On 4/9/07, Xmitters at aol.com <Xmitters at aol.com> wrote:
>
> Hello:
>
> When HD first came up in conversation early on, there was mention that, as
> stations on your co, and first adjacent FM frequencies lit up with IBOC, that
> the interference due to the OFDM carriers will virtually wipe out the coverage
> you had beyond your 1 mv/m 50:50 contour. Do we have enough stations on the air
>
> at this time to know if this coverage loss is real, or is it strictly
> theoretical at this time?
>
>
> Jeff Glass
> Northern Illinois University
>
>