CGC #1119

by CGC on February 6, 2012



                      THE CGC COMMUNICATOR

                            CGC #1119

                    Monday, February 6, 2012


                Robert F. Gonsett, W6VR,  Editor

    Copyright 2012, Communications General® Corporation (CGC)



  o  FCC: On ensuring that every K-12 student has a "digital
  textbook" within five years:

  o  International Bureau establishes pleading cycle for
  Lightsquared's Petition for Declaratory Ruling.  Comment
  date is 2/27; Reply Comment date is 3/13:

  o  There have been no recent changes in broadcast call signs
  in our area per FCC list #539 dated 2/3/12:



  o  Cerritos Ford has been fined $4,000 for operating on
  a frequency (467.675 MHz) not authorized by the Commission:

                           RANDOM NOTES


  Studer will have their state of the art demo truck at TV Magic 
February 14-16th.  Feb 14th will be an open house, 15th will be the 
SBE meeting, and the 16th will be registration-only factory 
certified training classes from Studer.  You can register online 
for free.  See the URL below.

  Studer buys lunch for SBE members and guests for the meeting
 Wednesday, February 15, at noon at TV Magic.  Rob Lewis, Director
 of Studer USA, will give the presentation following lunch.



  o  KBRT(AM), 740 kHz, has just been granted an FCC CP for
  their new transmitter site in the Santa Ana Mountains.  The
  details are on page 1 of their company's monthly engineering

  o  A copy of KBRT's Construction Permit follows.  Note
  the unusual final paragraph that mandates highly asymmetrical
  HD power levels:

  o  Fire damaged a KSON-FM radio station box truck Wednesday
  afternoon.  The driver escaped unharmed:

  o  Gulf-California acquires Desert Television's KESQ Palm
  Springs assets.  ABC and CBS affiliates KESQ and KPSP merge:

  o  A state regulator has rejected San Diego Gas & Electric's
  proposed 'network use charge' for homeowners who use solar:



  o  NAB wants to become a tech leader again (it was
  a leader decades ago thanks to serious lab work):

  o  Crawford is saving money with MDCL:

  o  Consider DRM as a possible AM modulation replacement:

  o  The president/CEO of World Christian Broadcasting makes
  a case for expanding shortwave radio transmissions -- something
  many people tend to gloss over in the Internet Age:



  KPFK, 90.7 MHz, Los Angeles, operates an FM translator
(K229BO) on Mt. Woodson to relay KPFK's signal to Rancho Bernardo 
and vicinity.  The translator is licensed, outputs on 93.7 MHz, 
beams west and uses vertical polarization.
So far, so good.

  On January 31, 2012, a blogger claimed that since late December 
2011, the translator input has at times been captured by the 90.7 
MHz station in Tijuana -- "La Mejor" as it is known.
On February 5, 2012, CGC's monitoring lab in Fallbrook checked the 
translator output at 2PM and again at 6PM and found that on both 
occasions La Mejor was being relayed with no sign of KPFK.

  (The ironic part is that KPFK installed the translator because 
co-channel La Mejor drowned out KPFK in San Diego and vicinity; 
now, KPFK's own translator is relaying the unwanted

  Informed sources indicate tbat the last few months of hot weather 
has led to temperature inversion layer ducting that, in turn, has 
allowed La Mejor to capture the translator input, especially during 
the day.  At night sometimes conditions change enough so that KPFK 
is the dominant input signal.

  La Mejor has been on the air for many months.  Nevertheless, it 
is curious that FCC's FM Query page does not recognize it as an 
operating station in Tijuana.  The FCC database simply says, 
"Petition for Rulemaking to Add/Change an Allotment" and only as 
a Class B1 allotment at that.

  The reference coordinates for the Tijuana facility are given as 
32-28-28, 116-53-56 (degrees-minutes-seconds N. Latitude and W. 
Longitude respectively, NAD27).  There is some indication that La 
Mejor's call sign is XHTIM.

  Needless to say, KPFK is very concerned about the inter- ference 
and plans to tackle the problem pronto.

                       LETTERS TO THE EDITOR


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the Tech Letters Website.  Here is the URL to see the most recent 
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                            OFF TOPIC


  o  Miniature quad-copters flying in various formations:



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