Computer: Search the most recent subspace transmission from mission command.

He didn't want to risk a subspace transmission, even encoded.

It looked like an indicator for a subspace transmission, but when she did a sensor sweep, nothing was there.

"According to this, there's a subspace transmission coming in, but I can't tell where it's coming from."

It was as though Kirk's words had been delayed by subspace transmission.

Hal, you should know the energy cost for subspace transmission.

"I already registered my findings via subspace transmission from the ship last night."

Kirk could see the doctor wasn't comfortable with the idea of patients he had certified dead turning up in a subspace transmission.

"And if subspace transmission wasn't possible, you wouldn't have to do the report right away?"

"They just sent a tight-beam subspace transmission," the communications officer reported.