BANGLADESH   4750 kHz exact fq, refurbished / repaired Thales/Ampegon
TX unit at Dhaka-BGD, heard with test tones at 12.15-12.22 UT, when
listened to Uwe's SDR unit in eastern Thailand location, today March 25.
S=9+30dB signal strength, and accompanied by 7 (seven) tone string peaks
either sideband symmetrically:
+/- strange 150, 250, 350, 450, 1000, 2000, and 3000 Hertz distance apart
[selected SDR options, span 12.5 kHz RBW 15.3 Hertz]
(wb  df5sx, wwdxc BC-DX TopNews March 25)

Hallo Wolfgang,
der Bangladesh Betar Sender hat seit ca. 2 Wochen seine Mucken.
Vor 5 Tagen ein breitbandiges Signal von fast 20 kHz, gleich optisch N-FM.
Jetzt starker Brummton ...
(Uwe Volk-THA, via wwdxc BC-DX TopNews March 25)
Yes, when tuned-in around 19.08 UT heard heavy BUZZ tone again of Betar
Shavar scheduled 0600-1715 UT.
Various BUZZ strings visible on Perseus screen display, as
50, low level 100 suppressed, 153, 254, 356, 458, 1000, 1262, 1363, 1572,
1673, 1775, 1880, 2000, 3030 Hertz distance apart either sideband.
Now at 19.14 UT the international program - mentioned in WRTH 2019 as
Bengali service 19.15 til 20.00 UT, on 13580 kHz shortwave in 22mb, but
heard on 4750 kHz today March 25 instead.
Time pips exact, last pip tone at 19.15:00 UT start, ID by female announcer,
flute/drums like AFG/Persia Dari sce incentral Asia.
S=9+30dB or -44dBm in eastern Thailand on Uwe's remote rx installation.
English scheduled ex13580 kHz, daily at 1715-1900 UT in WRTH 2019
international book section.
[selected SDR options, span 12.5 kHz RBW 15.3 Hertz]
(wb  df5sx, wwdxc BC-DX TopNews March 25)