The MRC/SS circuit provides three functions in one package.
First, an efficient (low power drain) remote control allows the recorders to be started and stopped
by computer logic, relay contacts, or a simple switch. In remote control stand-by the MRC/SS
draws about 150 µAmps, less power than the self-discharge of most batteries (about ten years) and
in operation imposes a burden of less than one percent of normal battery life. A standard Marantz
PMD-201 in remote stand-by will drain a fresh set of batteries in less than one day and a PMD-430
has no remote control facility at all.
The second function is a "Silent Stop" at the end of tape. A standard Marantz recorder has
a solenoid which makes noise when it disengages the "Play" and "Record" keys at the end of a tape.
In the event that the recorder is located near the subject of an investigation this noise could be
heard.
Finally, the MRC/SS provides power to the type of electret microphones which are widely
used by law enforcement agencies. It is especially useful with model LV-7
microphones when used in motor vehicles, aircraft, or boats.
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