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                      THE CGC COMMUNICATOR

                            CGC #374

                    Monday, February 21, 2000

                 Robert F. Gonsett, W6VR, Editor

     Copyright 2000, Communications General Corporation (CGC)

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  TOPO MAPS FOR THE ENTIRE U.S. NOW ON-LINE

  Free topographic maps are said to be available on-line
for the "entire United States" courtesy, in part, of the U.S.
Geological Survey:

  http://www.topozone.com/ 

  CGC's experience indicates that the site lacks some maps
or portions of maps, but is impressive overall.

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  THE LPFM CONGRESSIONAL HEARING

  On Thursday, February 17, 2000, at 10:00am, the House
Commerce Committee held a hearing on the FCC's LPFM service.
For transcripts see:

  http://www.house.gov/commerce 

  Click on the February 17 item entitled, "A Review of the
FCC's Spectrum Management Responsibilities in addition to
H.R. 3439, the Radio Broadcasting Preservation Act:"

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  COFDM  VS. 8-VSB

  NBC Vice President of Technical Planning and Engineering
Pete Smith said he was disappointed by the FCC's quick decision
to turn its back on COFDM as an alternate DTV transmission scheme.
NBC recently tested a COFDM system in Philadelphia which Smith
said performed very well.

  With respect to 8-VSB, NBC conducted reception tests in
Philadelphia, Washington, Los Angeles and Dallas using consumer
receivers and said it confirmed Sinclair's earlier findings.
While 8-VSB reception in rural areas was possible, there were
"lots of problems" with reception in indoor & outdoor environments
in urban areas close to the transmitter.  Even with an outdoor
antenna, Smith said, only 50% of current NTSC viewers would be
able to see DTV.

  (Broadcasting & Cable magazine, 2/14/00, p. 19)

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  90.7 MHZ - TIJUANA'S NEWEST FM STATION

  XLNC(FM), 90.7 MHz, Class A, Tijuana, began broadcasting on
2/13/00.  It is second adjacent to both Z-90 (90.3 MHz) and
XETRA-FM (91.1 MHz), plays the most popular classical music
passages and is, for the moment, virtually commercial free.

  The coverage of the new station is limited because it is
co-channel to superpower KPFK in Los Angeles.  However,
temperature inversion layer ducting will greatly enhance
propagation at times.  The station's frequency has been
approved by the FCC.

  XLNC may also be heard on the web at:  http://www.xlnc1.org/
and attracts listeners worldwide, even patients and doctors at
a Melbourne, Australia mental hospital!

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                           JOB SHOPPE
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  KEYT-TV CHIEF NEEDED

  KETY-TV, Channel 3, Santa Barbara, a small market network
affiliate, is looking for a "highly motivated hands on" Chief
Engineer.  For further information, see p. 76 of Broadcasting
& Cable magazine for February 14.

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  KMIR-TV MAINTENANCE ENGINEER NEEDED

  Employee-owned Journal Broadcast Group needs a Maintenance
Engineer at KMIR-TV, Palm Springs.  Please send resumes to:

  Greg Green, Operations Manager, KMIR-TV,
  72920 Parkview Drive, Palm Desert, CA 92260.

  (Journal is also looking for a Chief Engineer for KTNV-TV,
  Las Vegas.)

  Learn more about Journal's openings and employee ownership
opportunities at:

  http://www.journalbroadcastgroup.com 

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           LETTERS TO THE EDITOR    (NINE LINE LIMIT)
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  ANTI-AIRCRAFT GUNS AT KHJ - 1940s

  "I remember the early days of the KHJ present transmitter
site..... the fields near the towers (with) trailer mounted search
lights, trailer mounted anti-aircraft guns and trailer mounted
"big ear" listening devices...."  For the whole story, see:

  http://www.bext.com/cgc/ 
  Click on 'Additional Postings'
  Click on 'ANTI-AIRCRAFT GUNS....'

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  RE THE KMPC TRANSMITTER PHOTOS

  Completely enjoyed the KMPC photos last week.  I have an
old RCA BTA-10F in El Salvador that is no longer in use.  It
used 892Rs in the high level modulator and PA, four in all.

  I agree with the comments on some of the photos.  The RCA
is layed out like a schematic diagram.  It was a wonderful
sounding transmitter when it was on the air.  Unfortunately,
age, neglect and dirt got to it as well as some very bad power
which took out one of the filament transformers.

  Eric Kruzel, EKruze01@sprintspectrum.com 

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  SELECTING A TV RECEIVING ANTENNA

  There is a very interesting web site that determines what
antenna (outdoor) is best for your receiver whether it is analog
or digital and is based on several factors which can be
programmed through a series of prompts.  It can be found at:

  http://www.antennaweb.org/antennaweb/ 

  ....compliments of the Consumer Electronics Association.

  Dave Hill, dhill@larcan.com, LeBLANC Broadcast Inc.

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  THE USELESS FCC RADIO ENGINEERING DATABASES

  The FCC database change has affected us....  The new
database(s) are kind of useless....  I really need the
directional 73.215 flag and the comments.... Unfortunately
it looks like they lost much more than they gained, and in
many cases it may be very difficult to purge out the wrong
or duplicated data....

  Carl Gluck, Salem Communications

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  RE WHAT'S ON CHANNEL 24?

  In reply to Chuck Felts' letter in the last CGC Communicator,
the FCC database shows Channel 24 as a TV translator in Oxnard
that might be in the process of moving to Channel 25.  See Below:

  K24DM OXNARD CA US Channel 24.... License
CAPITAL BROADCASTING CORP. N Lat 34 19 52 W Lon 119 1 20
ERP: 2.940 kW  HAAT: 0.0 m  RCAMSL: 718.0 m....

  K24DM OXNARD CA US Channel 25.... Application
CAPITAL BROADCASTING CORP. N Lat 34 19 52 W Lon 119 1 20
ERP: 10.000 kW  HAAT: 0.0 m  RCAMSL: 718.0 m....
FROM CH. 24

  Carl Gluck, CarlG@salem.cc

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  RE THE INVENTION OF SPREAD SPECTRUM

  Just a follow-up on your item on the invention of spread
spectrum by actress Hedy Lamarr and classical music composer
George Antheil.  The concept of spread spectrum for radio
transmissions came from the  interest Heady and George had in
player pianos.  They reasoned if the punched holes in the player
piano roll could change the tone (frequency) sound of a struck
piano string, a similar technique could be used to change the
frequency of radio transmissions in a random-appearing pattern.
A synchronized sequence at the receiving end could tune the
receiver.

  Although they took their concept of frequency hopping directly
to the Navy and the War Departments in Washington, it appears that
the government made little use of their ideas until many years
later.

  (From a FCC staff member)

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  THANKS FOR HELPING

  As I prepare to return to work this Monday (2-14-00) after
a medical leave of absence, I want to thank everyone for their
prayers, communications of support, concern, and well wishes.
I am truly a very blessed and fortunate man to have such friends.

  Special thanks to Mark Pallock and Fred Holub for filling-in
during my absence.  Words cannot express my gratitude for all
their help and support as they stepped-in and kept things rolling
at Power 106.

  Thanks again,

  Tom Koza, Chief Engineer, KPWR(FM), Los Angeles

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                          MISCELLANEOUS
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  SBE'S BROADCAST NETWORKING TECHNOLOGIST CERTIFICATE

  SBE has rolled out a new certification program designed to
respond to the convergence of the broadcast and information
technology fields.  Topics covered by the exams will include the
basics of broadcast local area network installation, recognizing
what a hub is, knowing what the different wire categories do and
understanding the basic layers of network protocol common to
all systems.

  http://www.sbe36.org/2000/0208_cert.html 

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  POWER LINE RFI

  After prodding by the FCC, Pacific Gas & Electric Company
says it's making headway in mitigating long-standing power-line
noise complaints from several Northern California amateur radio
operators.  Not all complaints have been resolved, however, and
several new ones have sprung up in the interim.

  The FCC's Part 15 rules obligate utilities and others that
fall under their provisions to not cause harmful interference to
licensed services and to cease operating a device that's causing
harmful interference upon FCC notification.  For more, see:

  http://www.arrl.org/arrlletter/00/0218/ 

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  A FRACTAL PARADISE FOR YOUR VIEWING PLEASURE

  http://sprott.physics.wisc.edu/fractals.htm 

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  THE CALIFORNIA EARTHQUAKE SIMULATOR

  http://world.std.com/~howie/calif.html 

  (This is a delightful site that "shakes" your whole browser if
Java is enabled.  Caution, virii can be spread by Java.   -Ed.)

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           LOCAL ITEMS FROM THE FCC    (FCC TYPOS TOO)
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  CALL SIGN CHANGES

  KACE(FM), Inglewood, to KRCD effective 02/08/2000
  KRTO(FM), West Covina, to KRCV effective 02/09/2000

  (FCC Report No. 374)

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  FM TRANSLATOR APPLICATION FOR ORIGINAL CONSTRUCTION PERMIT
  ACCEPTED FOR FILING

  BNPFT-20000128AAP  NEW   122346   FAITH PLEASES GOD CHURCH CORP.
                   89.9 MHZ               MISSION VIEJO, CA

  CP New Stn.

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  FM STATION APPLICATION FOR MINOR MODIFICATION
  TO A LICENSED FACILTY ACCEPTED FOR FILING

  BPH-20000114ABO   KRCD    1025     COX RADIO, INC.
                  103.9 MHZ           INGLEWOOD, CA

  Minor change in licensed facilities

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  FM BOOSTER APPLICATION FOR ORIGINAL CONSTRUCTION PERMIT
  DISMISSED

  BPFTB-19990609TE  990609TE  93671   RM BROADCASTING L.L.C.
                    106.1 MHZ         SAN JACINTO/HEMET, CA

  CP NEW STN:  PRIMARY STATION KPLM

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  AM STATION APPLICATION FOR MAJOR MODIFICATION
  TO A LICENSED FACILTY....

  BP-19910429AG     KPLS  50516     CRN LICENSES, LLC
                      830 KHZ           ORANGE, CA

  CP TO CHNG CITY OF LICENSE TO ORANGE-HUNTINGTON BEACH,
  CA, INCRSE PWR TO 23KW/50KW AND MAKE CHNGS IN ANT SYSTEM
  PET FOR RECON FILED BY (NEVADA BROADCASTERS, INC.) IS HEREBY
  DENIED PURSUANT TO LETTER DATED 09/30/96
  PURSUANT TO STREAMLINING R & O, FCC 98-281,
  CP EXPIRES 10/3/1999.
  PET FOR RECON FILED 10/01/99
  *WITHDRAWAL OF PETITION FOR RECONSIDERATION FLD ON: 01/27/2000

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