Operation; Reception; Reception (I) - Kenwood TS-930S Instruction Manual

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5.1 Reception (I)
The numbers in parenthesis refer to switch and control
assignments as listed in the preceding chapter.
NOTE: _——————_ —___ ic" qx"—
Set the MIC and CAR controls to minimum to prevent accidental
transmission before tune-up. The TS-930S must be operated into
a-50-ohm antenna or dummy foad with an SWR less than 2:1.
Random length wire antennas or light-bulb dummy loads should
not be used. Conventional half-wave dipoles and beam antennas
should be used only at or near their resonant frequency. Ex-
ceeding an SWR of 1.5:1 can damage the output stage of the
transceiver.
(1) Basic Procedures for Receive Operation
The TS-930S has many advanced features such as CW,
VBT, SSB slope tuning, NOTCH, etc. to assure enhanced
receive operation. For the use of these specialized controls
and switches, refer to Section 5.2 ''Reception (I)''.
With a suitable antenna and microphone or key connected
to the transceiver, set the controls as described.
[INITIAL SETTING]
POWER switch OFF
VOX switch OFF
MONI switch OFF
STAND-BY switch REC
SSB reception SLOW
CW reception FAST
MODE Selected reception mode
MEMO switch VFO
FUNCTION A
RF ATT 0 dB
RIT OFF
NOTCH OFF
AF TUNE OFF
D. LOCK OFF
AF control Turn fully counterclockwise
RF control Turn fully clockwise
_ | SSB siope tune High
@
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irs
Turn fully
clockwise
Low Turn fully
RX ANT switch OFF
Table 5-1
counterclockwise
a. Turn the POWER switch (42) on. The meter and
frequency display group will light , indicating the
TS-930S is operating.
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SECTION 5. OPERATION
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b. Select a band with the BAND switch (7) or 1 MHz step
switches (8).
c. Advance the AF gain control (53) clockwise until some
receiver noise or signal is heard from the speaker.
d. Adjust the main tuning within the frequency range of
the selected Amateur band until a signal is heard. Tune
the signal for clearest reception.
(2) WWV Reception
Set the band switch to ''10'' and turn the tuning con-
trol to 10.0 MHz.
5.2 RECEPTION (I)
This section covers operation of controls and switches to
provide maximum performance from the TS-930S.
1 RF ATT switch .
A strong adjacent signal may conceal a desired weak
signal, or the S meter may deflect off-scale when the
receiver is tuned to a local strong signal. The input to the
RF amplifier may be attenuated by 10, 20 or 30 dB using
the RF ATT switch. This will reduce or eliminate in-
terference and distortion from excessively strong signals.
2 RF GAIN CONTROL
RF GAIN is controlled by changing the AGC threshold
voltage. Adjust the RF GAIN so the S-meter does not
deflect excessively. This also reduces noise during recep-
tion. For normal operation, this control should be turned
fully clockwise for maximum sensitivity.
Maximum ''S'' meter reading of
an incoming signal.
AF RF
GAIN~®~ GAIN
6
as)
Full
clockwise
position
AF RF
GAIN—® GaN
6
counter
clockwise
Fig. 5-1 RF GAIN Contro! Operation
: Pointer deflection with RF
Signals weaker gain control adjusted
than this level counterclockwise.
are attenuated. 7] +
3 AGC {AUTOMATIC GAIN CONTROL)
Set the AGC switch to the appropriate position: Generally
for SSB and AM, SLOW, for CW and FSK FAST, and for
very weak signals, the AGC may be turned OFF.
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