QR0TDD and QR0BHP(those are zeroes not 'O's) have appeared a few times on 20M as copied here in FN85ga. The events only were copied today 2016 08 24 at around 1800 UTC and again a week or two ago. The targets are about 400 miles due east of Nova Scotia.

Could these be corruptions of calls and locators?

TNX

Bill VE1YY