Voice of Vietnam 4, transmitting from Dak Lak, (formerly in South Vietnam) was heard on 20 June 2012. A Vietnamese language broadcast of tradition music was monitored from 22.00 to 23.00 UTC (broadcast time 22.00 to 15.30 UTC). Frequency used was 6.020 kHz. Reception (SINPO): 45444 -- good signal strength, slight interference and minor atmospheric noise, otherwise clear and audible speech. At 22.23 UTC audio feed disappeared, but transmitter was audible; audio resumed at 22.24 UTC.
The following source states the transmission location is Dak Lak and operating power is 20 kW: http://www.short-wave.info/?station=Voice%20of%20Vietnam%204
A sound file of VoV4 in Dak Lak, recorded on 24 April 2013 at 11.00 UTC, may be heard HERE. Signal continues to received well in West Malaysia.