CGC #1147

by CGC on June 12, 2012



                     THE CGC COMMUNICATOR

                           CGC #1147

                    Tuesday, June 12, 2012


               Robert F. Gonsett, W6VR,  Editor

   Copyright 2012, Communications General® Corporation (CGC)



 Probably the most popular radio station in the United
States is WWVB on 60 kHz.  Almost all atomic clocks and self-
setting wristwatches are tuned to that station to obtain
the correct time of day.

 On paper at least, WWVB could improve its signal penetration
by 14 dB if it added phase modulation (PM) to its existing
amplitude modulated (AM) carrier.  Because AM would be
maintained when PM is added, almost all existing clocks and
wristwatches should continue to work well.  However, new
receivers designed to decode the PM signal should work much
better - as if WWVB had increased its power by 14 dB.

 WWVB has already conducted about five experiments where PM
has been added for brief periods of time.  The first PM injection
was in about March of this year.  The latest PM injection began at
11AM PDST on Thursday, June 7, 2012 and concluded 24 hours later.
The next experiment is planned to start on June 14 and will run
for 15 consecutive days, ending June 29 prior to the June 30 Leap
Second addition.  Field data will be gathered on the east coast
to better determine how much of the calculated 14 dB improvement
is realized in practice.

 Again, almost all existing WWVB receivers should operate
properly regardless of whether PM is turned on or off.  However,
certain old fashioned time and frequency receivers using phase-
locked-loops (PLLs) will be confused by the PM signal and will not
operate properly, notably old PLL-equipped Spectracom and Tracor
receivers.  Fortunately, WWVB plans to shut off PM for one hour
on each of the work week days during the 14 day test window in
order to allow those old receivers to resync.

 Assuming the 14 day test is successful, WWVB plans to
permanently add PM in August or September.  So, if you happen to
have one of the old fashioned affected receivers, you should have
plenty of time to replace or upgrade it, or switch to a GPS
reference standard.

 Questions or comments should be directed to WWVB broadcast
manager John Lowe at 303-497-5453, or by writing to john.lowe
(at)  Watch the following Website for updated



 Senior officials of the United States-Mexico High Level
Consultative Commission on Telecommunications (HLCC) on June 8
signed major amendments to two existing bilateral agreements
between the U.S. and Mexico to allow for the elimination of
interference to the communications of first responders and to
enable compatible operations for Sprint's deployment of high-
speed wireless broadband service in the U.S.-Mexico common
border area.

 The amendment for eliminating interference to first
responders and public safety organizations reconfigures the
channeling in a key radio band (800 MHz) to separate public
safety channels from commercial channels.  The amendment
involving Sprint adds two sub-bands (near 2 GHz) to the 1995
U.S.-Mexico Agreement for Personal Communications Services in
which Sprint holds FCC licenses nationwide and may now deploy
networks compatibly under those licenses along the common
border area.

 FCC news release:

 State Department press release:

 The four signed documents (all dated 06/08/12):



 As many of you know, for years Bext Corporation USA has
graciously archived past on-line CGC Communicator newsletters
as a public service.  Not only has Bext donated the necessary
Web space, they have also provided considerable software support
and the people necessary to post each and every newsletter.

 Now Bext has provided us with a new and improved Web page
and a great new search engine.  Do check out their latest
offering by visiting the URL below.  And the next time you have
equipment needs, we hope you will give Bext every possible
consideration.  They can be reached at (888) 239-8462 and
their home page is .  (Archived CGC Newsletters)



 o  Notice of Unlicensed Operation issued to Steve Steinberg
 for a pirate station on 106.9 MHz located at an unidentified
 "place of business" in San Marcos:

 o  KUSF(FM)-to-KUSC(FM) sale finalized. "Under a consent
 decree worked out between the stations and the commission,
 both universities make a voluntary contribution of $50,000 to
 the U.S. Treasury and the FCC's investigation ends."  This
 is a very disappointing decision:

                          RANDOM NOTES


 SBE Chapter 47: "Past EAS tests have shown flaws in the system.
These need to be corrected.  Now, we have an approaching deadline
of June 30 to have our EAS systems in order.

 "In a timely move, we have been able to engage both Richard
Rudman, well known for his involvement in EAS, and Lark Hadley,
local LECC chair, to address our stellar group on this subject.

 "Broadcasters do have the responsibility to be the source of
information to their communities in the event of an emergency.
Your participation is strongly advised."

 This will be a dinner meeting starting at 6:30 PM on
Tuesday, June 12.  Please see the following Web page for
costs, directions, ramp closure info and RSVP instructions.
This will be a most important event.  Hopefully the June 30
Leap Second will not overtax your shiny new equipment.   :)



 o  SBE Operator Handbooks now available in digital format:

 o  U.S. regulators may restrict how drivers use in-dashboard
 infotainment systems and may draft guidelines for mobile devices
 and voice-activated controls in vehicles:

 o  What does the June 30 deadline for stations to have
 CAP-compliant EAS encoders/decoders mean for stations in
 a practical way?  Leslie Stimson explains:

 o  A petition filed by the American Cable Association asks
 the FCC to reconsider June 30 EAS deadline waivers for select
 cable operators.  Broadcasters have some of the same questions
 as well:

 o  June 6, 2012: Did you notice anything odd with your
 Internet connection that day?  Probably not, but the Internet
 started changing in a big way with Websites and Internet
 Service Providers (ISPs) turning on a new technology to
 transmit data:

 o  The GTRM 100, one approach toward copper theft detection:

 o  "Using a Market to Obtain the Efficient Allocation of
 Interference Rights."  This is one of a series of study papers
 published by FCC staff to explore alternate spectrum allocation



 o  The successor to Mission Abstract Data, Digimedia,
 has sent out another batch of letters to stations urging
 them to sign licensing agreements for specific automation
 technology.  An attorney firm says:  If you've ignored MAD's
 letters so far, don't ignore them now and seek legal help:

 o  On May 24, 2012, a storm reportedly hit Eau Claire,
 WI taking out the microwave tower behind the Clear Channel
 studios.  In so doing so, seven stations were taken off
 the air simultaneously:

 o  FCC's Peter Doyle, Chief of the Media Bureau's Audio
 Division, notes that a radio station license, unlike a station's
 physical assets, is not subject to a mortgage, security interest,
 attachment or similar property right.  What's more, licenses are
 subject to FCC's consent before any transfer:

 o  More on including (or not) activated FM chips in
 mobile devices:

 o  Congressional support for mandating FM receivers in
 mobile devices:



 o  Netflix builds its own delivery network:

                      LETTERS TO THE EDITOR


 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


 o  One way to determine the structure of an ant hive is
 to fill it with cement, let the cement cure, then dig out
 the surrounding soil to see what's left behind (namely the
 3-D geometry of the hive).  This is interesting:

 o  After spending four hours in makeup to look old, 2012
 NBA Rookie of the Year Kyrie Irving heads to the courts of
 New Jersey to devour some young bloods in a pick-up game:

 o  The Ross Sisters performing in 1944:  The video starts
 with singing, then something very unusual happens -- all
 part of the great American spirit of the time.  Enjoy!



 The CGC Communicator is published for broadcast engineering
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