Just because a few people get it wrong on the net, doesn't make it
right. I've seen DSBAM used for AM, DSBSC used for DSB. Check out this
college text:

i agree: version 2 will use "DSBc". why the logic fallacy? if you can
find errors in my analysis e-mail me. ~phil PS my name -is- in the
paper and 999/1001 Hz tones sound the -same-.