the RHC transmitter on 6000 kHz has been on several nights with a strong signal near Chicago around 0000-0200 UTC with no or very low modulation. also in the mornings 1500-1700 UTC on 15230 kHz with a good signal also with no or little modulation. can barely hear anything on my radios with the volume turned all the way up.
doesn't the RHC "engineers" listen on a radio to hear what their signal sounds like? pretty stupid to have a 100,000 or 250,000 watt transmitter running if can't be modulated sufficiently!
might as well turn the transmitter off and save the electricity. RHC should call their Chinese buddies to fix their modulation problems, however, the Chinese company likely won't fix it for free... "no dinero, no fix!" things really fell apart after Arnie Coro passed (one of the founders of RHC)
on the other hand, Radio Rebelde sounds good on 5025 kHz in the evenings 0100-0300 UTC, modulation strength nearly as good as Radio Exterior España on 9690 kHz