Subspace transceivers were components of any type of subspace radio. Several starships were equipped with a subspace transceiver array.
Subspace transceivers formed an integral part of the Borg Collective, as they were responsible for linking the trillions of drones into the collective consciousness.
The Enterprise was equipped with a subspace transceiver array. In 2151, Ensign Hoshi Sato had to run a diagnostic of the array. (ENT: "Silent Enemy")
In 2154, subspace transceivers were used by the Romulan Star Empire on the exterior of the Romulan drone-ship. (ENT: "Babel One")
In 2370, Jake Sisko built a subspace transceiver as a science project. (DS9: "Whispers")
Dukat's Bird-of-Prey had a modified subspace transceiver array to create an image of a freighter having refined dilithium crystals aboard instead of his true image. (DS9: "Return to Grace")
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.