CGC #1126

by CGC on March 19, 2012

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                        THE CGC COMMUNICATOR

                              CGC #1126

                       Monday, March 19, 2012

                             ________

                  Robert F. Gonsett, W6VR,  Editor
                  

    Copyright 2012, Communications General® Corporation (CGC)

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  BREAKING THE LPFM AND FM TRANSLATOR LOGJAMS

  Watch for the FCC to address key LPFM and FM translator issues at 
Wednesday's Open Meeting.  We could see the application logjam thaw.

  http://tinyurl.com/LPFMs-vs-FM-Xlators

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  COMMUNICATION TOWERS ACCOUNT FOR RELATIVELY FEW BIRD KILLS

  A new exhaustive report confirms what we've heard many times from 
knowledgeable people in our industry:  The percentage of birds killed 
by communication towers is insignificant.  It is particularly 
insignificant compared to the percentage of kills made by cats and via 
bird collisions with buildings and windows.

  http://tinyurl.com/AvianMortality-RW  (Radio World synopsis)
  http://tinyurl.com/MigratoryBirds-FinalPEA  (FCC press release)
  http://tinyurl.com/The-Final-PEA  (The full-blown FCC release)

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  MORE LIGHTSQUARED

  Coming before the FCC (again) is LightSquared with a modified 
technical proposal.  And if that fails, LS has hired premiere 
litigators Theodore Olson and Eugene Scalia to launch a legal 
battle with U.S. regulators.

  http://tinyurl.com/LightSquaredBackForMore
  http://tinyurl.com/LightLitigators

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  A POSSIBLE BENEFIT OF LIGHTSQUARED

  It could be that the FCC is considering mandating receiver 
performance standards as a way of reducing interference and 
improving spectral efficiency.  Perhaps it took someone with 
the political clout of LightSquared to bring the issue of 
receiver selectivity front and center.  The issue is long 
overdue for serious consideration.

  Of course, improving receiver selectivity comes with a cost to 
end users.  Better filtration costs money.  So that is a delicate 
issue that is probably at the heart of this discussion.

  http://tinyurl.com/RX-Standards

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  FCC ENFORCEMENT WATCH -- SOUTHERN CALIFORNIA

  o  The FCC has entered into a Consent Decree with Uniradio
  Corp. concerning unauthorized cross-border program transmissions
  to XERCN, 1470 kHz, Tijuana, Mexico:
  http://tinyurl.com/XERCN-Consent-Decree

  o  Pacific Spanish Network has been fined $6,000 for
  transmitting on an unauthorized microwave frequency and at
  an unauthorized beam heading:
  http://transition.fcc.gov/eb/Orders/2012/DA-12-416A1.html

  o  Jeff Dineen, Fullerton, has been issued a Notice of
  Unlicensed Operation for transmissions on 1680 kHz:
  http://transition.fcc.gov/eb/FieldNotices/2003/DOC-312911A1.html

  o  Adelman Broadcasting (KRAJ, Johannesburg) was issued a
  Notice of Violation ("NOV") for EAS rule violations:
  http://transition.fcc.gov/eb/FieldNotices/2003/DOC-312908A1.html

  o  Fisher Wireless (La Cresenta) has been issued an NOV for
  transmitting non-stop pulses on 461.875 MHz which caused
  interference, and for transmitting the wrong call sign in
  Morse code:
  http://transition.fcc.gov/eb/FieldNotices/2003/DOC-312907A1.html

  o  KPAL-LP, Palmdale, was issued an Order to Show Cause
  why its Class A authorization should not be downgraded to
  low power television.  Similar Show Cause orders have been
  issued to others:
  http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-12-386A1.doc


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                           RANDOM NOTES
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  FREE DETAILED COVERAGE MAPPER FOR FM AND TV STATIONS

  A free on-line coverage mapping system has been developed for 
FM radio, HD Radio, TV and Mobile TV courtesy of NPR Labs.
This looks like a major undertaking on the part of NPR.

  http://tinyurl.com/NPR-Coverage-Mapper  (Story)
  http://secure.nprlabs.org/radioTVmapping/  (The NPR mapper)

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  GENERAL NOTES OF INTEREST

  o  A first look at Engineering Sessions slated for the
  NAB Show in Las Vegas:
  http://radioworld.com/default.aspx?tabid=75&entryid=753

  o  408-foot tower to be added to One World Trade Center:
  http://tinyurl.com/TradeCenterTower

  o  John F.X. Browne passes away at age 75:
  http://tinyurl.com/JohnFXBrownPasses

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  KFI SLIPS OUT OF HD MODE

  KFI, 640 kHz, Los Angeles is one of the nation's best known AM 
stations.  When that station hiccups, people notice.  Such was the 
case just over a week ago when a report reached our office 
indicating that KFI had slipped out of HD mode.

  On Tuesday, March 13, we took a spectrographic photo of KFI and, 
sure enough, their HD sidebands were nowhere in sight.
The following spectrogram documents the situation and explains what 
caused the anomaly.  Another interesting feature shown in the 
spectrogram is the highly asymmetrical HD sideband operation at KBRT.

  http://earthsignals.com/add_CGC/2012-03_KFI_HD.pdf

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  SPEAKING OF KFI

  Let's take a look at this venerable station's newly installed 
transmitter plant in 1931.  The following write up, from RCA 
Victor Company's "Broadcast News" newsletter of October 1931, 
takes us right inside the transmitter room.  By the way, the 
same "handsome two story building of brick, steel and concrete" 
(minus a little wear and tear) is still used as KFI's transmitter 
plant today.

  The first URL takes you to the KFI story in Broadcast News issue 
#1 (October 1931).  For more Broadcast News newsletters, visit the 
second URL.

  http://tinyurl.com/KFI-TX-in-1931
  http://tinyurl.com/RadioHistoryIndex

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  SPEAKING OF KBRT

  Here are the FCC "history cards" for KBRT, 740 kHz, Avalon.
This is how the FCC kept track of major events before the advent 
of computers.

  http://tinyurl.com/KBRT-History-Cards

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  MILITARY LANDING PRACTICE IN THE SANTA ANA MOUNTAINS

  The USDA Forest Service is proposing to allow the Marine Corps. 
to continue rotary wing aircraft landings and takeoffs -- practice 
exercises -- at up to ten established sites in the Santa Ana 
Mountains.  Written comments must be postmarked on or before April 
15, 2012.

  See the full proposal along with a map of the Landing Zones:

  http://earthsignals.com/add_CGC/USMC_Air.pdf


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                       THE MT. WILSON REPORT
******************************************************************

  THE MT. WILSON REPORT BY DENNIS DOTY

  The predicted 'biggest storm of the year' turned out to be a bust 
on Mt. Wilson (the worst should be over by now).
In fact, I do not think a "storm" ever really happened.
We got an inch or two of snow at best.

  Dennis Doty
  dennisd (at) ladigitalnetworks.com
  March 18, 2012 @ 10:16 AM

  http://tinyurl.com/StormWarningCanceled


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                          HAM RADIO NOTES
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  SOLAR FLARES -- NOTHING NEW FOR AMATEUR RADIO OPERATORS

  People tend to get excited when solar flares are reported, but 
flares are a natural part of the 11-year sunspot cycle and are very 
familiar to Amateur Radio operators because flares affect 
propagation.  The number of sunspots is increasing right now, so 
expect more flares and more excited reports.

  Here is a video of a nice Northern Lights display caused by the 
flare about a week ago.  The video starts with a black screen.

  
****************************************************************** LETTERS TO THE EDITOR ****************************************************************** TECH LETTERS Concerning the CGC Communicator story entitled "More on Omnia's Improved FM Stereo Transmission System" (CGC #1125), Mike Worrall says, "Something seems odd to me when listening to/viewing the two samples of audio in the demonstration...." Mike's comments are posted and ready for viewing at: http://tinyurl.com/Mike-on-Omnia-FM-Stereo ______ Letters to the Editor of the CGC Communicator should be posted on the Tech Letters Website. Here is the URL to make new postings (all letters and comments are moderated and are posted after review): http://www.earthsignals.com/press/ Please contact the moderator, Steve Blodgett, if you are having trouble viewing or posting: sblodgett (at) earthsignals.com Thanks! ****************************************************************** OFF TOPIC ****************************************************************** HIGH STANDARD OFF TOPIC MATERIAL o How differential gears work (video, advance to 1:50 to skip unnecessary material): http://tinyurl.com/DifferentialGears o A little tower climbing activity, hang on (back by popular demand): http://tinyurl.com/TowerClimbingActivity o About half way through this stage performance a small bird lands on the lead singer's guitar. Guaranteed to generate a smile: __________________________________________________________________ ------------------------------------------------------------------ The CGC Communicator is published for broadcast engineering professionals in so. California by Communications General® Corporation (CGC), consulting radio engineers, Fallbrook, CA. For subscriptions to the CGC Communicator, or to cancel subscriptions, or to change your e-dress already on file, send mail to . Manually edit the address so it reads, "cgc@cgc333...." CGC Communicator articles may be reproduced in any form by non-commercial publications provided the articles are unaltered and credit is given to the CGC Communicator. Past issues may be viewed and searched at http://www.bext.com/_CGC/ courtesy of Bext Corporation. Letters to the Editor are not being accepted by the CGC Communicator at this time but may be sent to the companion publication Tech Letters. See CGC #999 (fourth story) for instructions on how to access Tech Letters. To go directly to CGC #999: . Typographical errors originating in FCC material are reproduced in our newsletter without speculative corrections. The views expressed in our newsletters do not necessarily reflect those of Communications General® Corporation, Bext, or the newsletter editor. ------------------------------------------------------------------ _________________________ End _______________________________

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