Chambers coil
The chambers coil was a component of a starship's comm system.

In 2285, Khan Noonien Singh, who had taken over the starship , ordered a message sent to the approaching , claiming that their chambers coil was overloading their comm system, as an excuse as to why they could not engage visual communications. This ruse was discovered by Captain Spock, however, who was able to determine that the Reliants coil emissions were normal. ()

In 2370, while attempting to escape from the Kellerun on the surface of T'Lani III, Julian Bashir attempted to repair a comm system to reach the T'Lani, under instruction from Chief O'Brien. Part of this process included resetting the actuators on the chambers coil to switch to a higher carrier frequency. ()

Communications technology