King Daniel Into Darkness wrote:
The Wormhole wrote:
It would make no sense if Klingons have cloaking devices given in the Prime Universe they got them from the Romulans in the technology trade that resulted in the Romulans using D-7s.
The Romulans got D7's from the Klingons, but that the Klingons got cloaking devices in exchange is pure fanon. Like the Klingon Bird of Prey being a Romulan design (fanon stemming from an early STIII script where it was the case), the idea that Klingons got their cloaks from the Romulans is obsolete.
Maybe they got them from the Xyrillians, along with their holographic tech.
Still, there is no indication in TOS that Klingon ships could cloak. The first time we see Klingons cloak is in Trek III, so it's not that much of a stretch to assume they couldn't prior to that movie.
Besides, the Klingons must have gotten something impressive in return for their starships, otherwise I can't see them giving top-rate ships of the line to a rival power. Cloaking technology fits that theory.