Here's an interesting post found on WRTH Facebook group regarding the UNID 1542 kHz station in China
Acc. to Zhengheng Kang, the station is heard far & wide inside China, but lack of #KiwiSDR's within the country makes it very tough if not impossible to get any meaningful results of TDoA multilateration.
And if that's not enough of a mystery behind it... they're apparently selling medicines!
BTW sorry for russian test on FB buttons; that's how Google indexed it :v #mediumwave #mwdx #1542kHz