Short Range Wrist Communicator
Standard issue to almost all ship crews. Range is limited to about 800 metrics (500 miles) Transmission is omni directional and can be scrambled. The unit is capable of voice only.

Command Head Sets
Used by senior Bridge officers and senior officers and techs in critical areas of the ship. Variations of this type of communicator are used on both military and civilian ships. The helmet communicator found in vacuum suits and in pilot helmets are identical in features. It is similar to the wrist communicator, Range is limited to about 800 metrics (500 miles) Transmission is omni directional and can be scrambled. The unit is capable of voice only.

Medium Range Communicator
Rugged, armored case, standard issue to Viper pilots, shuttle crews and anyone else that are likely to go planet side. Range is about 8,000 metrics (5,000 miles.) Transmission is omni directional and can be scrambled and compressed for burst transmission. The unit transmits and receives voice and data streams, but is not equipped for video images.

Medium Range Image Communicator
Range is about 8,000 metrics (5,000 miles.) Transmission is omni directional and can be scrambled and compressed for burst transmission. The unit transmits and receives voice, video and data streams. Larger in size and not as robust as the standard Medium Range Communicator.
https://space.missiledine.com/wp-content/uploads/2020/07/VueComm.jpg

Long Range (sub light) tCommunicator
Large, heavy, found in emergency equipment lockers. Range is about 800,000 metrics (500,000 miles.) Transmission is omni directional and can be scrambled and compressed for burst transmission. The unit transmits and receives voice and data streams, but is not equipped for video images. NOTE: This is a standard radio, it is not a Neutrino Transmitter and is not capable of sending, or receiving, Faster Then Light signals or Secure (narrow beam) signals.