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Old 06-02-2016, 01:54 PM   #27
Shrew
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City: Westerly, RI
Vessel Name: N/A
Vessel Model: 1999 Mainship 350 Trawler
Join Date: Jan 2014
Posts: 4,162
A few points to consider.

Monaural (headset): One earpiece

Binaural (headset): Two earpieces

Full-Duplex:
Communication can be Sent AND Received simultaneously. Communication in both directions simultaneously. Think standard telephone (i.e. two-way bridge in traffic)

Half-Duplex:
Communication can be Sent OR Received but not simultaneously. Communication can occur in both directions, but not simultaneously. Think UHF (i.e. One-lane bridge in traffic).

VOX: Voice Activated. Can be either Half-Duplex or Full Duplex.

example: Telephone= Full Duplex
Speakerphone = Half-Duplex (ever wonder why sometimes two people on a speaker phones are talking over each other all the time?)

PTT:
Push To Talk/Press-To-Transmit: These are Half-Duplex communication devices which will stop receiving signal and begin broadcasting when the button is pushed. VHF, CB, SSB are good examples of Half-Duplex/PTT devices.
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