Chapter 4 Operating Basics; Switching Power On/Off; Adjusting Volume; Radio Frequency (Rf) Gain - Kenwood TS-870S Instruction Manual

OPERATING BASICS
SWITCHING POWER ON/OFF
Switch ON the DC power supply, then press and hald
down [POWER] until "HELLO" appears on the Display.
Release [POWER] when you see "HELLO".
+ After the "HELLO" message, the frequency and
other indicators light. Pressing [POWER] too long,
switches the power OFF. If the TS-870S has not
been used for an extended period, "HELLO" may not
appear immediately.
To switch OFF the transceiver, press [POWER].
+ After the transceiver has been switched ON, it can
then be switched OFF or ON by using only the
power switch on the DC power supply.
ADJUSTING VOLUME
AUDIO FREQUENCY (AF) GAIN
Turn the AF gain contro! clockwise to increase the audio
level and counterclockwise to decrease the level.
Note: The position of the AF gain contro! does not affect the valume
of "beeps" caused by pressing butions nor the CW transmit sidetone.
Alsa, the audio level for Packet operation is independent of the AF
gain control setting.
RADIO FREQUENCY (RF) GAIN
Usually, set the RF gain control maximum clockwise. If
you are having trouble hearing the desired signal due to
excessive atmospheric noise or interference from other
stations, it may help to reduce the RF gain.
To do this, take note af the peak S-meter reading of the
desired signal, then turn the RF gain contro!
counterclockwise to match this peak reading with the
illuminated S-meter segments. Signais that are weaker
than the level set with the RF gain control will be
attenuated. Reception of the station is easier.
Furthermore, using a faster AGC setting {page 44} will
help eliminate the blocking affect of the large AGC
voltage that is developed due to a strang adjacent
station.
Depending on the type and gain of your antenna, and
the condition of the band, you may prefer leaving the
RF gain control turned counterclockwise by some
amount instead of turning it fully clockwise.
ADJUSTING SQUELCH
The purpose of squelch is to silence audio output from
the speaker when no signals are present. Setting the
squelch threshold too high causes the squelch to
remain closed while a weak signal is present. Setting
the threshold too !ow allows noise to be heard between
transmissions from other stations. Many operators
prefer leaving the squeich control fully counterclockwise
unless operating full-carrier modes such as FM or AM.
Turn the SQL control to just eliminate the background
noise when no signal is present, or set and forget at full
counterclockwise rotation.
DUAL DIGITAL VFOs
The A and B VFOs function independently so that
different or the same frequencies can be selected by
each VFO. The fallowing sections explain how to select
a VFO and how to copy frequency data from one VFO
to the other.
SELECTING VFOs ([RX Al, [RX B])
Press [RX A] to select VFO A. Press [RX B] to select
VFO B.
4 Assume that you are presently using VFO A.
2 Press [RX B].
- VFO Bis selected and the frequency currently
selected by VFO B is displayed.
3 Press [RX A] to select VFO A again.
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