[BC] Skywave dying

[r j carpenter]

> From: Mike McCarthy <Towers at mre.com>
> The sunset date for NTSC was done to facilitate the migration to more 
> spectrally efficient digital modes. Aural broadcasting doesn't gain 
> anything, and in fact is worse spectrally because of adjacent channel 
> occupancy which will impact/interact with analog operations of distant 
> stations on AM.  The problem isn't that bad on FM unless there is a 
> substantial 2nd adjacent short spacing which most urban Class A stations 
> possess.

You forget that here is the East there are a number of FM "Class B" 
FIRST adjacents in nearby cities.  I use quotes since some have rather 
severe DAs.  Some examples are:

WHFS 105.7 Catonsville, MD (Baltimore)
WJZW 105.9 Woodbridge, VA (xmtr at Washington Beltway and US29)
48 miles

WHFS 105.7 to WQXA 105.7 York, PA
47 miles  (cochannel, both Class B with severe DA)

WMMX 106.5 Baltimore
WJFK 106.7 Manassas, VA (xmtr at Washington Beltway and US29)
44 miles

WFSI 107.9 Annapolis
WTWP 107.7 Warrenton, VA
66 miles

WFSI 107.9 Annapolis
WGTY 107.7 Gettysburg, PA
62 miles

WTOP 103.5 Washington
WXCY 103.7 Havre de Graqce, MD
68 miles

There are so many close second-adjacents that they are not worth listing.

bob carpenter