KBS World Radio (Japanese) interval signal - 7275kHz (27 Nov 2015) 

Date : 27 Nov 2015 (08.00 GMT)
Spot : Seoul, Korea
Receiver : Tecsun PL-380 (4kHz filter mode)
Recorder : Sony ICD-SX734 (Digital PCM)
Frequency : 7275kHz
This is an interval signal of KBS World Radio. The signal tone goes back to what I heard in 2004, which makes me happy as that tone reminds me of my high school days. (at that time KBS World Radio was Radio Korea International); the tone used from 2005 to 2014 did not satisfied me.
There is a slight jamming but the broadcast signals were of high strength. (about 80dBu)