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Sign On/Sign Off Station Identification (AKA: Sounder/Stinger)
Explanation: identification - Wikipedia, the free encyclopedia
"Sign off" and "sign on" ID's generally have more information, such as the name
of the station's owner, the location of its transmitter, and its operating ...
en.wikipedia.org/wiki/Station_identification - 48k - Similar pages
Robert Copeland United States Local time: 19:52 Native speaker of: English, Spanish PRO pts in category: 40
18 mins confidence: peer agreement (net): +4
opening / closing sequences OR shots
Explanation: too little context to be sure, but it is something like that!