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THE EXTERNAL PLUG-IN ANTENNA
In order to counteract the shielding effect of the metal body of an
automobile in which the Attache Phone is used, a plug-in quarter-wave
antenna and cable assembly is supplied.
This antenna can be clipped
to the gutter of the car roof and the cable run in through the window.
Transmitter power, which
is
normally connected to the Attache Phone
antenna in the case cover, is automatically switched to the external
antenna when the plug is inserted.
A longer, 5/8 wavelength automobile antenna which
will
give greater
range or a stronger signal may alternately
be
used if its cable end
has the proper plug (Type Switchcraft 440 or equivalent).
For this
alternative, check your dealer or service agency.
THE BATTERY CHARGER
This accessory plugs into the usual wall socket and transforms the
AC 115 volts to a lower D.C. Voltage for charging the battery.
The
charging current
is
limited by a series ballast lamp (type GE-82) to
protect the battery.
Do not
energi~e
the transmitter while this battery
charger is in use.
The time required for a full charge at the rate recommended by the
battery manufacturer is 14 hours.
It is perfectly safe to leave the
charger on for a longer period.
THE CIGARETTE-LIGHTER POWER ACCESSORY
The Attache Phone may be powered from the automobile 12 volt power system
and its battery recharged by the use of this accessory.
Noise and voltage
transients on the auto power line are removed by regulatory circuits to
protect the Attache Phone and a second ballast lamp (type GE-64) limits
the battery charge current.
Use of this accessory whenever the Attache
Phone is in the automobile is recommended both for charging the battery
and making or receiving a call.
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