Realistic HTX-100 Owner's Manual page 27

Using the SOOK Button
The [500K) button is handy if you need to get rapidly to the
other end of the band from where you are currently tuned.
Pressing [500K) causes the frequency to increase by .5
MHz (500 kHz).
USING THE RF GAIN CONTROL
When you have established a conversation, or if you are
monitoring a conversation, you can increase or decrease
the level of the signal received by your transceiver. If you
are monitoring a nearby high-power unit, the signal
strength could cause the signal to distort. Turn the RF GAIN
control counterclockwise to decrease the amount of RF
gain and make the signal more "readable." If you are moni-
toring a low-powered, distant unit, turn the RF GAIN control
clockwise to increase the amount of RF gain and boost the
incoming signal.
USING F.LOCK/OUT
When the F.LOCK/OUT switch is set to the F.LOCK posi-
tion, you cannot change the tuned frequency. Use this to
prevent accidentally changing the frequency when you
have tuned to an interesting or important broadcast. Set the
F.LOCK/OUT switch to OUT to allow you to change
frequencies.
USING THE NB/OUT SWITCH
The NB/OUT switch allows you to turn on and off the noise-
blanker circuit. The noise-blanker circuit greatly reduces or
eliminates noise generated by automotive ignition,
electrical motors, or other devices that might generate
spurious RF noise. Normally, leave the NB/OUT switch set
to NB.
USING THE RF POWER/SIGNAL LED INDICA-
TORS
Five LEOs function as an RF Power meter to indicate the
relative transmission output power in the transmission
mode, and as a signal strength meter to indicate the relative
strength of the received signal in the reception mode.
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