Subspace transceivers are components of any type of subspace radio.
In 2154, subspace transceivers were used by the Romulan Star Empire on the exterior of the Romulan drone-ship. (ENT: "Babel One")
Later, subspace transceivers were used by the Borg to link drones in a collective consciousness.
In 2370, Jake Sisko built a subspace transceiver as a science project. (DS9: "Whispers")
In 2372, the Cardassians removed Empok Nor's subspace transceiver when they abandoned the space station. (DS9: "Empok Nor")
In 2374, Grand Nagus Zek brought three Ferengi subspace transceivers to Deep Space 9 aboard his shuttle. (DS9: "Profit and Lace")
- The spikes on the Romulan drone-ship were subspace transceivers. By extension, the spikes at either end of the Earth Spacedock were probably also subspace transceivers.