The ATR833 product family comprises of VHF transceivers with the new channel separation of 8.33 kHz. The channel spacing can be switched between 25kHz and 8,33kHz. The built-in vox controlled intercom operates up to 4 microphones (2 standard, 2 dynamic). In many cases no extra intercom is required. This saves cost and weight. All headsets are separately adjustable. Using similar headsets a 4-place intercom can be built-up.In addition to the standard functions there are 2 memories available. The user can define often used frequencies to build up an own database. In addition the last 10 frequencies used can be recalled.