User's Manual

This manual is divided into two sections. The first is a description of the system hardware. The
second covers the recommended operating and maintenance procedure.
1.0 HARDWARE DESCRIPTION.
The model RFLS-1XT Two Channel Digital UHF Transmitter is a low power two
channel, safety locking, hand-held remote control transmitter with a guaranteed range of
60 yards (line of sight operation) when used with the Holatron model RFLS-1RC
receiver. A range of 100 yards is typical. The two channels are digitally encoded and
amplitude modulated on a single carrier frequency of 418MHz. This frequency is
controlled by a SAW (surface acoustic wave) device for exceptional stability. No
alignment or tuning procedures are ever required to maintain optimum performance.
The modulated RF output occurs continuously while one of the two momentary transmit
buttons is depressed. Receiver output is continuous while this signal is being
transmitted. A digital code amplitude modulates the carrier to indicate to the receiver
which of the transmit buttons is depressed. The user has access to the following
components:
1.1 THE ANTENNA.
The RF signal is radiated by a quarter-wave flexible whip antenna which screws
onto the top end of the transmitter box.
The transmitter should never be
operated without this antenna in place, as damage to the RF components
could result.
Such operation will void the warranty.
Be careful not to overtighten the antenna when screwing it on, as this could
cause its mating connector to rotate and break its internal connection.
Overtightening could also cause the connector to rotate, with the same result,
when subsequent removal of the antenna is attempted. The recommended way
to install the antenna is to grasp it by its small diameter upper part and rotate
gently in a clockwise direction until increased resistance is felt. It need not be
tight to achieve a good electrical connection. When removing the antenna for
storage, observe the base of the mating connector to ensure that it is not
rotating. If the antenna is so tight that rotation is occurring, grasp the hex base of
the mating connector with long nose pliers, and then unscrew the antenna.