CGC #1137

by CGC on May 8, 2012



                        THE CGC COMMUNICATOR

                              CGC #1137

                        Tuesday, May 8, 2012


                  Robert F. Gonsett, W6VR,  Editor

   Copyright 2012, Communications General® Corporation (CGC)



 New Commissioners

 o  The Senate voted yesterday to confirm two new FCC nominees,
 Democrat Jessica Rosenworcel and Republican Ajit Pai, to fill
 the vacant seats on the five-member commission that has only
 had three members since the beginning of the year.  The
 nominees could be sworn in by the end of this week:


 o  FCC adopts rules permitting TV channel sharing by
 broadcasters and enacts first step towards acquiring spectrum
 under incentive auctions: (FCC Report & Order)

 o  FCC's TV channel sharing workshop is set for May 22,
 details available here:

 o  Good reasons why television broadcasters should hang onto
 their spectrum:

 o  TV public files will be moving to the Internet in stages;
 political files are the hot topic:


 o  Red Wolf (Connecticut) FM translator granted over
 full power station objections -- this is an interesting

 o  Ideas proposed as to what should constitute
 interference from FM translators and LPFMs to primary FM

 o  Media Bureau announces release of LPFM spectrum
 availability program and data files:


 o  Workshop agenda for collocating wireless antennas on
 communications towers and other structures:

 o  FCC launches a Mobility Fund to accelerate delivery
 of 3G/4G service to "tens of thousands of road miles that
 currently lack 3G or 4G service:"

                          RANDOM NOTES


 National broadcast preparedness expert Richard Rudman comes
to San Diego May 16 to update Chapter 36 members and guests on
the updates to the Emergency Alert System or "EAS."  What are the
new FCC rules and how were they derived?  What is the Common
Alerting Protocol (CAP)?  When and how will it be implemented
in the southern California region?  If you have questions
regarding the EAS, this is a good time to ask.

 Meeting:  Wednesday, May 16, at noon at TV Magic, 8112
Engineer Road in Kearny Mesa, San Diego.  Please RSVP to
rsvp (at) with a Subject of "May Meeting" to allow
an accurate headcount for the no-host lunch ($10 for a
sandwich and soft drink).



 o  NAB has withdrawn its lawsuit challenging the use of
 unlicensed devices in spectrum vacated by broadcasters:

 o  LG Electronics plans to launch Internet-enabled TV
 based on Google's platform during the week of May 21:



 o  Frank Foti's talk at the NAB Show on FM SSBSC (single
 sideband suppressed carrier transmission of the L-R channel)
 is available free on the Web.  It's a fascinating 32 minute
 video.  The sound starts when Mr. Foti begins speaking:

 o  The May issue of Crawford's "The Local Oscillator" is
 hot off the virtual press and ready for viewing.  Noteworthy
 are Cris Alexander's findings from the NAB Show and how he
 plans to implement new technology at his stations (page 1-3):

 o  On the still-sluggish HD Radio adoption rate:



 o  Harris to sell its broadcast business (the trade press
 is buzzing with stories -- these are the introductory ones):

 o  A new report has been released on the September 8, 2011
 San Diego electrical power blackout:

 o  Bo Donovan has passed away at age 67.  He had a rich
 history in southern California radio broadcasting and was
 recently the manager of the Ramona and Fallbrook airports
 in San Diego County:



 This continues our multi-part series on avian anti-perching
devices that are being mandated on communications sites located
on southern California Forest Service land.

 Two additional concerns with anti-perching spike strips have
been raised by a TV engineer regarding Mt. Wilson and similar
highly elevated sites.  The concerns are expressed here as
questions -- will the spikes significantly increase the ice
loading on towers by holding ice in place longer, and when the
ice eventually falls will it tend to fall in larger blocks doing
more damage to other antennas and structures below?

 An additional point is that deformation of the spikes will
inevitably occur when ice pulls away from the spikes or falls
on other spikes, leading to the formation of intermodulation
products when the spikes rub against each other in the presence
of high RF fields.  "We could spend a lot of money installing
those spikes now, just to find out that we've got big interference
headaches years downstream" the engineer commented.  By spikes we
mean metal spikes.  Insulated spikes are quickly destroyed in icy
environments according to one installer with years of experience.

 How much attention the Forest Service has paid to these issues
(if any) remains to be seen.

 If there are additional concerns with the Forest Service's
Appendix G anti-perching measures, please send your thoughts to
the editor of this newsletter.  Engineers from the SCFCC and CGC
would like to discuss the key issues with representatives from
the Forest Service in the not-too-distant future.

 Forest Service Appendix G:



 MIT President Susan Hockfield and Harvard University
President Drew Faust, accompanied by top officials from both
institutions, recently announced a new collaboration that will
unite the Cambridge-based universities in an ambitious new
partnership to deliver online education to learners anywhere
in the world.

                         HAM RADIO NOTES


 "I always enjoy it when it says Certified Mail, Federal
Communications Commission, Enforcement Bureau.  And here it's
a Warning Notice from the Commission that went to a slew of
southern California [ham radio] repeater operators who own 1.2
GHz repeaters and I haven't had my 1,200 MHz repeater on the
air for fifteen years, yet they say that I operate on the air
on 1.2 GHz and I'm interfering with the FAA radar."  - Remarks
from Gordon West, WB6NOA, as published in Amateur Radio
Newsline for May 4, 2012.

 Ham radio use is secondary in the 1.2 GHz band; there is
no argument on that point.  It's just that the FCC is starting
to sound inept in its actions.  Much better PR is needed.  The
FCC should tell us which frequencies are of concern, why, at
what power levels, and over which geographic areas.



 Randy Hall, K7AGE, has been working in the broadcast field
for years and has put together a popular ham radio video Website.
You might enjoy his "Tour Around NAB 2012..." at the first URL
below.  ARRL has their own video Website at the second URL.

                      LETTERS TO THE EDITOR


 The most recent Tech Letters postings include the following:

 o  The Broadcast Warning Working Group held an SECC plan
 writing workshop during the recent NAB Convention.  The goal
 was to come up with a sample state plan with elements that
 take revisions we know about so far to Part 11 into account.
 The plan, in Microsoft Word doc format, is posted for


 Letters to the Editor of the CGC Communicator should be
posted on the Tech Letters Website.  Here is the URL to see
the most recent postings and to make new postings (all letters
and comments are moderated and are posted after review):

 Please contact the moderator, Steve Blodgett, if you are
having trouble viewing or posting: sblodgett (at)


                           OFF TOPIC


 Green lasers are back in the news with eye injuries to two
San Diego police officers reported on Friday.

 As mentioned in CGC #1017 (August 2010), "Many green
lasers can be an eye hazard because of intense infrared radiation
"powerful enough to cause retinal damage to an individual...."
The final URL below explains the origin of the invisible

 The San Diego situation is serious and perhaps out of
character with what we have come to expect from someone randomly
waving a pen-type green laser around.  So we wonder if a somewhat
higher powered laser -- and/or an aiming telescope -- was
involved.  Unless the culprit is caught, we may never know.



 o  The horrible noise experiment.  Crank up the volume
 and keep it at the same level for this seven noise test:

 o  The Hindenburg disaster remembered 75 years later:

 o  A fascinating story on stolen audio archive recordings
 where the culprit was ultimately caught:



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