I have sent this message to DW's frequency manager via their website:

Dear Sirs:

Your choice of 3995 kHz to conduct DRM tests is a disaster for the
amateur
radio service. American hams have learned to live with broadcasters and
utilities in this part of the band, but demolishing a solid 10 kHz of
bandwidth is totally inexcusable. Please consider ceasing these
transmissions or retiming them so that they will not propagate to North
America.

Destroying a major portion of a busy band is no way to win fans for DRM
or
for Deutsche Welle.

Sincerely,

Al Quaglieri
Amateur radio NN2U and shortwave listener
NY
(via HardCoreDX)
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dxAce