Section 4. Operation; Rf Gain Control; Wwv Reception - Kenwood TS-120S Operating Manual

vette enunb -cnnne cannes etntba sun -at
easeants
Turn fully
clockwise.
Turn fully
counterclockwise.
Set to desired
mode CW, USB
or LSB.
Set to
Transmit-
receive
selector
switch
desired band
SECTION 4. OPERATION
!
!
1
!
'
1
!
|
!
1
1
!
|
!
!
!
I
'
|
I
l
|
!
!
sO unt ent Et ARLE UHH -enn nt ABREU AUN
oo AEEDU OULU aunts cette scannas canta
Settings for transmission
Turn CAR and
MIC fully counter
clockwise.
p Set to
@z 4 desired band
Set to desired mode.
en
=
oe
Microphone
Fig. 4-1 Control and Switch Settings
4.1 RECEPTION
First connect the antenna, microphone and key. Then, set
the controls and switches referring to Fig. 4-1. For SSB
operation the MODE switch should be set to comply with
common operating practice; that is, it should be set to LSB
for the 3.5 and 7 MHz bands and to USB for the bands
above 14 MHz.
Ascertain that the TS-120S(V) is ready for operation, then
turn, the POWER switch ON. The meter, dial scale and
digital display will illuminate, indicating the transceiver is in
operation. The transceiver is fully solid-state, allowing
reception as soon as the POWER switch is turned ON.
Advance the AF GAIN control clockwise until some receiver
noise is heard from the speaker. Turn the main tuning knob
so the desired signal can be heard clearly.
While turning the main tuning knob, the frequency (MHz
digits) reading on the digital display will change at the edge
of each band (for example, from [28.999.9] to [29.000.0]
MHz). When tuning above or below a band edge, the 1 MHz
and 10 MHz digits are blanked, as shown below.
3.999.9 7.000.0_][14.000.0 21.000.0 }| 28.000.0 || 29.999.9
| 4 | 4 | 4
000.0 999.9 999.9 999.9 999.9 000.0
4.1.1. WWV RECEPTION
To receive WWV at 15 MHz, set the BAND switch to
JJY/WWYV and turn the main tuning knob until the subdial
reads "500". The digital display indicates ''.000.0" instead
of 15.000.0.
10
4.1.2. NB SWITCH
The TS-120S(V) has a sophisticated noise blanker designed
to reduce ignition-type pulse noise. The noise blanker is par-
ticularly important for mobile operation. When necessary,
activate the noise-blanker by depressing the NB switch ON.
4.1.3. RF GAIN CONTROL (Fig. 4-2)
For normal operation, this control should be turned fully
clockwise for maximum sensitivity. Receive sensitivity is
reduced by turning the control counterclockwise.
Adjust the RF GAIN so the S-meter does not show ex-
cessive deflection. This minimizes noise during reception
and allows the S-meter to indicates signal peak (or a little
below that point), noise is markedly reduced when the signal
is absent.
S-meter peak point
AF GAIN —@)— RF GAIN
6
8
0
Full
Clockwise
position
S-meter reading
at full counter-
clockwise position
of RF GAIN control
Signals below
this level are
attenuated
AF GAIN —@)— RF GAIN
6
84 Turn
counter
to clockwise.
Fig. 4-2 RF GAIN Control Operation