🚀 go-pugleaf

In article <1087@unccvax.UUCP> dya@unccvax.UUCP (York David Anthony @ W06BF-TV, Concord, NC) writes:
>	                       The FCC has (or is imminently about to)
>repeal the "turn off the burst during monochrome programs" rule, 
>because it is a pain in the ass.  The reason that killing the burst
>is such a pain is ...
>
>York David Anthony
>DataSpan, Inc

The bad side of leaving the burst on is that the black and white picture
tends to take on various random weak colors that don't belong there.
On the other hand, I have a problem with my Sony XBR (and other Sony sets)
and WGBH's mono broadcasts.  WGBH turns off the burst, but they leave
the 3.58 MHz components ON in the vertical interval test signals.
(I checked the rules and this is apparently legal.)  The XBR color
killer thinks it is getting just enough 3.58 to open, but since there is
no burst, the local 3.58 oscillator puts out total junk.  This results
in intense random color snow during the mono broadcasts.  I couldn't
find any adjustment in the service manual that would help.

Further, the same thing happens on Sony VCRs so that you get the
color snow in the color-under chroma frequencies on the tape!

Sony sure makes wonderful sets and VCRs when given reasonable NTSC
sources.  But start bending the specs in the source and the Sony stuff
hates it.  (Most obvious example is severe vertical jitter when the
sync pulses aren't really clean, as they aren't out of most cable
descramblers.)

/Rcc
clements@bbn.com