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                      THE CGC COMMUNICATOR

                            CGC #304

                    Monday,  January 18, 1999

                 Robert F. Gonsett, W6VR, Editor

     Copyright 1999, Communications General Corporation (CGC)

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  DTV ARTIFACTS

  The touted capability of over-the-air HDTV is in trouble.
There are a lot of reasons why, and the broadcast community
will have to band together if it is going to get HDTV off
the ground.

  At the recent Consumer Electronics Show (CES) in Las Vegas,
there were a lot of manufacturers displaying their new DTV and
DTV-ready TV sets.  What was disturbing was that those receivers
picking up terrestrial DTV broadcasts of an HDTV image had many
objectionable artifacts.  SDTV didn't look too good either.

  If you compared a regular NTSC-type of receiver to the new
DTV receiver, you'd probably buy the older one.

  (Synopsis, selected remarks from Jim Mendrala, DTV Tech Note 24)

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  DTV RETAILING

  DTV retailers at the Consumer Electronics Show were a bit
worried.  They know that consumers who have trouble picking up
pictures or are dissatisfied with the quality of early broadcasts
are likely to return their sets for a full refund.

  Savvy retailers are employing DTV specialists to make sure
that consumers understand the vagaries of over-the-air reception,
and to ensure that the new sets are properly configured.

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  COMMISSIONER NESS ON DTV

  FCC Commissioner Susan Ness addressed the Consumer Electronics
Show on the issue of DTV.  Her complete speech, as prepared for
delivery, is available at:

http://www.fcc.gov/Daily_Releases/Daily_Business/1999/db990111/spsn901.txt 

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  DTV SIGNALS MAY CAUSE UHF-TV PREAMP OVERLOAD

  Is it possible that DTV signals will drive some existing
over-the-air receiving antenna preamps into saturation and
jeopardize NTSC reception?  This is the theory of Bob Layton,
a respected antenna installer in San Diego County, who notes
that many existing UHF-TV preamps are run with such high gain
that they will overload with the first hint of more RF.  This
would cause a host of internally-generated IM products and a
deterioration of NTSC reception.  It's an interesting theory,
and one to keep in mind as the DTV roll out continues.

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  KCOP-DT, LOS ANGELES, TESTING

  According to a Mt. Wilson engineer, KCOP-DT, Channel 66,
has been on the air with a solid state Harris transmitter.
The antenna is reportedly a side mounted affair.  KCOP
appears to be the fifth DTV station to light up in L.A.

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  NO-TOLERANCE POLICY ADOPTED FOR UNREGISTERED ANTENNA STRUCTURES

  All existing, unregistered antenna structures that require
FCC registration must be registered immediately, or their owners
may face possible monetary forfeitures or "other enforcement
action."  So states the FCC in the following public notice:

http://www.fcc.gov/Daily_Releases/Daily_Business/1999/db990113/pnwl9006.txt 

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  USE OF 107.9 MHZ DENIED FOR VERY LOW POWER APPLICATIONS

  The FCC has denied Joel Lawrence Efrein's Petition for
Rulemaking to reserve FM Channel 300 for unlicensed, Part 15,
very-low-power FM broadcast service.  Action by Chief, Policy
and Rules Division.

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                           JOB SHOPPE
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  ENGINEERING OPENING AT KCBS-FM

  With the move to television by Tom Patterson, KCBS-FM now
has a technical position available.  The job posting can be
found at:

  http://www2.cbsradio.com/ww1/jobs/cgi-bin/list_jobs.cgi 

  Rick Sietsema, KNX/KCBS-FM

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  MAINTENANCE ENGINEER WANTED AT KROQ-FM

  KROQ-FM is seeking a Maintenance Engineer.  Studio,
transmitter and computer background required.  Experience with
the BE Audio Vault will be very helpful.  See posting at:

  http://www2.cbsradio.com/ww1/jobs/cgi-bin/list_jobs.cgi 

  Scott Mason, KROQ-FM

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  CE OPENING IN PHOENIX

  Chancellor Media in Phoenix, AZ has an immediate opening
for a Chief Engineer.  The successful candidate will have at
least 5 years broadcast engineering experience, with 2 years or
more as a Chief Engineer.  Must adapt well to a multi-station
environment, and have all necessary skill sets to succeed.  SBE
Certification, FCC General License or equivalent is highly valued.
Chancellor Media is an Equal Opportunity Employer.  Please send
resumes to: Eric Schecter, Phoenix Engineering Manager.
Fax: (602) 230-2116; E-mail: eric@kmle108.com 

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           LETTERS TO THE EDITOR    (NINE LINE LIMIT)
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  SETTING TIME

  There is a Leitch SPG unit that can dial via internal
modem to the Naval Observatory in the early hours and update the
internal Leitch clock.  We used this in San Francisco to lock the
Louth,* EAS and cut to the network.  The Leitch unit had analog
time code, VITC and a visual display.  Twice a year we updated
for DST.  Hope this can be helpful to provide a means to
synchronize all the EAS switching.

  Alan Nichols, KADY

  P.S.  The Louth is the automation system that controlled
our HP video file server, which played all the commercials.

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  AUTO TIME SET FOR YOUR COMPUTER

  You can avoid modems and long distance calls to sync your
computer to the atomic clock in Boulder, Colorado.  Here is a
way to use the internet to accomplish this task.  Visit the
following web site at the National Institute of Standards and
Technology (NIST).....

  http://www.bldrdoc.gov/timefreq/javaclck.htm 

..... and download the Internet-based synchronization software
called "NISTIME."  Your computer clock will automatically be
kept within one second of the nation's time standard.

  (Synopsis of message forwarded by Mark G. van der Hoek)

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  EARLY PR&E EQUIPMENT WANTED

  As Pacific Research & Engineering gets ready to celebrate
our 30th anniversary this year, we're looking for historical
equipment from our early days to construct a historical exhibit.
Specifically, we'd like to find a System One or earlier console,
but would be interested in talking about any unusual or early
pieces of PR&E equipment.

  Please contact Clark Novak in the Marketing department at
760-438-3911.

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  PREVENTIVE MEDICINE IS WISE

  I just wanted to remark on how somewhat humorous it is
that some radio GMs can spend thousands of dollars on seemingly
useless things inside a station, but always go cheap on
engineering.  Not pointing out anyone in particular, but a
station recently spent over $5000 in a week with on-air giveaways,
then refused to provide an ice-shield for their already damaged
STL antenna!

  Management doesn't realize how important preventative measures
are until the station is off the air.

  Jeremy Preece

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                       DIRECT FROM THE FCC
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  FM TRANSLATOR APPLICATIONS FOR LICENSE OR LICENSE
  MODIFICATION ACCEPTED FOR FILING

  BLFT-981224TA     K218CP      CALVARY CHAPEL OF TWIN FALLS, INC.
                   91.5 MHZ              SANTA BARBARA, CA

  LIC TO COVER
  ____________________

  BLFT-981230TD     K210CH       LIVING WAY MINISTRIES, INC.
                   89.9 MHZ            OAK VIEW, CA

  LIC TO COVER

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  COMMERCIAL DIGITAL TELEVISION STATION APPLICATION
  ACCEPTED FOR FILING

  BPCDT-981224KE     KUSI-DT     CHANNEL 51 OF SAN DIEGO, INC.
                     CHAN-18            SAN DIEGO, CA

  CP FOR A NEW DIGITAL TELEVISION STATION FOR STATION KUSI-TV,
  SAN DIEGO, CA; ERP(AVG): 145 KW; HAAT: 580 METERS; ANTENNA
  LOCATION:  ATOP SAN MIGUEL MT, SAN DIEGO, CA; (32-41-50
  116-56-04); ANTENNA SYSTEM: DIELECTRIC COMMUNICATIONS;
  TFU-10GTH-R S180

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   A C T I O N   O F : January 6, 1999

  BMPH-981208JD      KCZN         LAZER BROADCASTING CORPORATION
                   96.7 MHZ               SANTA PAULA, CA

  APPLICATION GRANTED TO FM BROADCAST STATION
  EXTENSION OF CP (BPH-940928II)
  3RD REQUEST
  AUTHORIZATION CONTAINS WARNING RE. NEW RULES EFFECTIVE
  02/16/99.

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   A C T I O N S  O F : January 7, 1999

  BLTTL-981124JG      K50EW      COUNTY OF SAN BERNARDINO AREA 29
                     CHAN-50           LUCERNE VALLEY, CA

  APPLICATION GRANTED LICENSE OR LICENSE MODIFICATION
  FOR UHF TV TRANSLATOR LOW POWER BROADCAST
  LICENSE TO COVER (BPTTL-940415HG, AS MODIFIED) FOR A NEW
  STATION.
  ____________________

  BPH-981124JA        KWVE         CALVARY CHAPEL OF COSTA MESA
                   107.9 MHZ             SAN CLEMENTE, CA

  APPLICATION GRANTED TO FM BROADCAST STATION
  CP TO REPLACE EXPIRE (BPH-941205IB)
  4TH REQUEST
  AUTHORIZATION CONTAINS WARNING RE. NEW RULES EFFECTIVE
  02/16/99.

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  COMMERCIAL TV BROADCAST STATION APPLICATION ACCEPTED FOR FILING

  BMPCT-981228LA    KRPA    RANCHO PALOS VERDES BROADCASTERS,INC
                  CHAN-44          RANCHO PALOS VERDES, CA

  MP (BPCT-830325KG TO EXTEND COMPLETION DATE FOR CONSTRUCTION
  ORIG CP GRT:  7-22-85  CP EXPIRES:  1-24-99

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  A C T I O N   O F : January 8, 1999

  BPTTL-981117JC     K19DE       EDUARDO AND ROSA MARIA CABALLERO
                    CHAN-19             SANTA BARBARA, CA

  APPLICATION GRANTED TO UHF TV TRANSLATOR LOW POWER BROADCAST
  CONSTRUCTION PERMIT TO REPLACE EXPIRED PERMIT.
  (BPTTL-980403IB, AS REINSTATED, FOR A NEW STATION)

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                          MISCELLANEOUS
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  SIMPLEX REPEATER

  Make a hand held ham or business band radio into a simplex
repeater.

  Radio Shack sells a wonderful small package - about the
size of a pack of cigarettes - that digitally records incoming
messages, then keys a transmitter and plays them back, adding
a courtesy beep.  All you need is an extra hand held radio
placed at a high central location and 4 AAA batteries or an
AC/DC adapter.

  The simplex repeater is compatible with Radio Shack ham HTs
and many Icom, Motorola, Standard and Yaesu-brand transceivers
with industry-standard jacks for external mic and speaker.

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  NOTCH FILTERS

  During broadcast RF Proof of Performance measurements, it
is often necessary to notch a carrier frequency to avoid
overloading a spectrum analyzer's front end.  Notching allows
you to see very weak spurious signals as required by FCC Rules.
While two or more types of filters may be required for any
formal Proof, a simple notch filter is one of the most basic
devices you can own.

  Now, a company called Eagle is manufacturing a family of
notch filters that cover the 0.5 - 850 MHz range.  For more
information, contact them @ (520) 204-2597 and ask for
literature on their TNF-200 and especially their TNF-400
series filters.

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  DETUNING TOWERS

  When a large metal structure is built near an AM transmitter
site, distortion of the coverage pattern is likely.  This is
because some of the energy from the station is bounced off the
structure.  Articles on "detuning" methods to stop the unwanted
reradiation appear from time to time in the trade journals, and
one particularly well written article appeared in Radio World for
October 14, 1998, page 34.  The author, Ron Nott, may be reached
at (505) 327-5646, or via e-mail at <k5ynr@tjantenna.com>.

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  CATV LEAKAGE PICKED UP BY SATELLITE?

  The Fuji Oscar 29 ham satellite may be suffering cable
television leakage interference problems.  According to several
reports on the AMSAT BBS, some rather strange signals were heard
while the bird was making a South to North pass over California
and again over South America.  Those intercepting the satellites
transmissions say that what was being retransmitted sounded like
the audio from a television soap opera.  Certain CATV channels
operate in the same frequency range as the satellite transponder.

  AMSAT BBS, via Newsline

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  WORLD'S FIRST GPS WRISTWATCH

  Casio claims to have introduced the world's first wrist
watch with a built-in global positioning satellite (GPS) receiver.
It can take 600 position readings before the battery is history.
The full scoop - and color pictures - are available at:

  http://joe.mehaffey.com/casiogps.htm 

  Thanks, Nirmal Velayudhan

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  Y(1.9)K PROBLEM

  The Swiss government recently sent out a notification to
all five-year-old children that they had to report to their
local school to begin their education.  That's standard practice.
The only problem is that a gentleman 105 years of age got one
of the notices too.

  (Courtesy of Larry Bloomfield.)

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  THANK YOU

  It's great to receive your publication.  Something new and
interesting all the time.  Eric Schecter, Phoenix.....  Thanks
for allowing re-use of information..... You would be surprised
where some of it ends up.  Hal Williams, N6TZ, Salem Comm.

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