[IRCA] KMPH 840 has IBOC

["Albert Lehr" <aelehr@xxxxxxxxxxxxxxxx>]

840 KMPH CA, Modesto heard using IBOC at 1714 PDT 10/20.
Frequency measured as a steady 840.00000 kHz.  At 1830 they 
shut off the IBOC and cut their carrier momentarily for their pattern 
change.  They came back with a stronger signal and no IBOC on 
the frequency of 839.99939 kHz.

Albert Lehr - Livermore, CA 

Allied A-2515 receiver
Homebrew external sync detector 
Frequency measurement system, phase-locked to WWVB
Two 8x35x8 ft. Ewe antennas at 218 and 293 degrees
6 ft. outdoor loop


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