Utility Planet

Utility Planet is the official blog for the column of the same name in The Spectrum Monitor. It replaces Utility World in the discontinued Monitoring Times magazine. Utilities are all VLF/LF/MF/HF (and sometimes low-band VHF) radio communications except broadcasting, CB, and non-emergency amateur. If you understood the last sentence, you know enough to read this blog.

Thursday, August 31, 2017

USCG, etc., on COTHEN (and air tracking) #4

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4-number calls were detected by a listener on Mode-S or ADS-B; I forget which.  The rest were heard on COTHEN. All are strongly believed to ...
Tuesday, August 29, 2017

USCG Harvey activity on COTHEN #3

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All heard on the air Tuesday 003                  USCG HC-130J #2003, Elizabeth City 503                  USCG C-130 #1503, Clear...
Monday, August 28, 2017

USCG Activity on COTHEN #2

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The following Coast Guard assets, as heard on COTHEN, are known to be working Harvey: J01    USCG MH-60T #6001 ATC Mobile J09    USCG MH-...

USCG Harvey activity on COTHEN

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Listeners in the area are hearing extensive Coast Guard rescue activity on the COTHEN net. The lower ALE frequencies seem most active, but t...
Sunday, August 27, 2017

Basic Harvey Frequency List #1

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This extract from my rather dated 2013 Hurricane Frequency List contains the ones that are known to be still used for the activities listed....
Friday, August 04, 2017

Shortwave Radiogram 5-6 August: Read the Blog

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The announcement of this week's Shortwave Radiogram is too good for me to hack up here.  It contains some important illustrations and ma...
Friday, July 28, 2017

SW Radiogram for 29-30 July

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From Kim Andrew Elliott: Hello friends, More broadcasters are making use of the 9400 kHz frequency from Space Line in Bulgaria. I...
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