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SP-400 Series User’s Guide
47 CTCSS tones and 104 DCS codes programmable per
channel.
5 2-tone decode – your radio may be programmed to
respond only when paged with a two-tone sequence.
Two sequences selectable per channel and up to 15
different sequences programmable per radio.
5 VOX (voice operated transmit) – allows hands-free
operation using an optional headset/microphone.
5 Voice inversion scrambler – for secure
communications. Radio communications are encoded
and decoded, when activated, to make the conversation
unintelligible to third parties listening on your frequency.
5 2-tone or sequential tone selective call – for more
advanced radio network management. Allows individual
or group calls to users in a radio network.
5 Emergency selective call – can be sent to alert other
users of an emergency situation with an activation
protected against accidental switching.
5 Busy channel lockout – prevents transmission when
the channel is busy. Programmable override function will
allow transmission during repeater hangtime.
5 Transmit time-out timer – ensures continuous
transmissions are limited to the programmed time. A
penalty timer is also programmable.
5 Battery save mode – may be programmed to extend
battery life.
5 Wide range of optional accessories – provide
additional flexibility of use.
These transceivers are compliant with ETS 300 086, IEC529
level IP54 and MIL STD 810E.
8 © 2005, Midland Radio Corporation