Mast-Mount Amplifier  (150-1108)      Operation        Faxback Doc. # 7231

FM Trap

If the TV picture contains wavy or herringbone patterned dark lines, move
the FM trap switch to IN to reduce or eliminate this interference.

If you have the amplifier connected to an FM set and a TV, set the switch
to OUT when you listen to FM.

Gain Control

Adjust the gain control to provide the maximum signal amplification
without overload.  If your TV receives too strong a signal, the picture
tears and becomes unstable.  FM sound can become distorted.

    Turn the gain control toward the MAX setting for weak or distant
    stations.

    Rotate the control towards MIN for nearby or strong stations.

AUTOMATIC PROTECTION CIRCUIT

The amplifier contains circuitry to guard against damage caused by a short
anywhere in the cable from the antenna to the TV set.  A short between the
antenna unit and the house unit causes the amplifier to shut down
automatically, extinguishing the power indicator.  If you locate a short,
follow these steps to correct it.

1.  Unplug the power cord and disconnect the suspected shorted coaxial
    cable.

2.  Wait 10 minutes for the unit to reset.  During this time, repair or
    replace the cable.

3.  With the cable disconnected, plug in the house unit.

4.  If the power indicator lights, unplug the unit, re-connect the cable,
    and plug in the power cord again.

If none of the above steps correct the situation, take the unit to your
local Radio Shack for service.

(br/all-7/19/94)