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Star Trek - The Next Gene…ractive Technical Manual
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Star Trek The Next Generation Interactive Technical Manual.iso
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1033000.txt
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1994-08-08
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PERSONAL COMMUNICATOR
The current Starfleet-issue communicator represents the latest
improvement in small subspace radio devices. Its primary role is to maintain
voice contact among crew members aboard ship and during away missions,
and to provide a lock-on contact for transporter operations. Voice contact
with other devices, such as the ship╒s main computers, is also within the
communicator╒s capabilities.
The communicator casing is micromilled duranium overlayered with
gold and silver alloys in a diffusion-bonding process. The metal alloys serve
to complement the aesthetic design of the device, which has been fashioned
into the Starfleet emblem.
SUBSPACE TRANSCEIVER ASSEMBLY
The heart of the internal electronics is the subspace transceiver
assembly (STA). This circuit incorporates an analog-to-digital voice encoder
and low-power subspace field emitter. It is also the same circuit used in
devices such as the personal access display device (PADD) and tricorder,
and shares the efficient data transmission protocols.
Voice inputs are received by a monofilm pickup diffusion-bonded to
the inner casing and routed to the STA. While the standard STA possesses
input channels for other data, these are not active in the communicator. As
all Starfleet communications are normally encrypted, the voice signal pulses
are converted by a series of encryption algorithms. These algorithms are
changed on a random schedule by Starfleet Command for galaxywide
subspace transmissions, and individual starship codes may be substituted
during local away missions.
Battery power is provided by a sarium krellide crystal rated for two
weeks in normal use. When close to depletion, the crystal will produce a
faintly audible oscillation; it can be returned to full power by induction
recharging.
COMMUNICATOR CONTROL
Control of the personal communicator while aboard a Starfleet vessel
is a matter of preference and habit. To initiate a voice call, it is simply a
matter of tapping the front of the badge to confirm to the STA that the
message is meant to go out. This may seem redundant, as the intraship
comm system is constantly monitoring and routing voice transmissions, but it
is a good practice to learn. During away team operations, the tap is essential
to preserving internal battery power. The tap activates a dermal sensor to
relay a power up command to the STA.
The range of the communicator is severely limited, mainly due to the
small size of the STA emitter and power supply. In transmissions between
two stand-alone communicators, clear voice signals will propagate only 500
kilometers. This is a tiny fraction of the 40,000 km required to contact an
orbiting spacecraft, so it is the spacecraft that must become the active
partner in orbit to receive the communicator╒s lower-power signals, and
transmit correspondingly high-power signals to the communicator╒s
receiver.
The communicator is a line-of-sight device during away missions. Its
planetside range may be improved if the magnetic field value is below 0.9
gauss, or mean geologic density is less than 5.56 g/cc.
Various EM factors will affect voice and transporter lock. Most
remedies to comm interference will take place on the spacecraft side, as
there are few user-adjustable controls within the communicator. In the event
of loss of transporter lock, other ship sensors can be brought into play to
locate Starfleet crew members, though the process can take longer to
complete.
USER ID SECURITY
For security purposes, the communicator is a personalized Starfleet
device that can be programmed to respond to the individual crew member╒s
bioelectrical field and temperature profiles using the built-in dermal sensor.
If an attempt is made to operate an appropriately programmed device by
another crew member without security override authority, the communicator
will fail to activate. During benign situations, security codes are changed
every five days. During emergency situations, or when Away Team members
are involved in planetside operations, codes are changed on a random
schedule at least once every twenty-four hours. ╞