Reception - Kenwood TS-530S Instruction Manual

(2) RF G A l N CONTROL
RF GAlN
IS
controlled by changing the AGC threshold
voltage. Adjust the RF GAlN so the S-meter does not
deflect excessively. This also reduces nolse d u r ~ n g
reception. For normal operation, this control should be turn-
ed fully clockwise for maximum sensitivity.
Max~mum " S m e t e r readmg
of an incoming signaL
R F GAlN
*:
J
Full
S~gnals weaker Po~nter deflect~on with
than this level
RF gain control adjusted
are attenuated.
Countercl o ckwi s e.
clockwise
position
\
1
R F GAIN
e8
0 I0
Turn
t
counter-
Fig. 4-3 RF GAlN
Control Operation
clockwise
(3) AGC (AUTOMATIC G A l N CONTROL)
Set the AGC switch to the appropriate position: Generally
for SSB. SLOW, for CW FAST. and for very weak signals, the
AGC may be turned OFF.
Simultaneous Use of the RF G A l N CONTROL and AGC
Switch
If a strong signal (such as a local station) appears in the vici-
nity of the intended receive signal. the S meter may show
unusual deflection due to the AGC voltage developed from
the strong disturbing signal. If this occurs, turn the RF GAlN
down so the meter pointer remains at about the or~ginal
deflection peak and turn the AGC switch OFF. This w ~ l l
eliminate the unwanted AGC voltage and permit clear
reception.
First set the RIT/XIT control to center, and turn the RIT
switch ON.
The RIT/XIT control allows shifting the receive frequency by
approximately + 2 kHz without changing the transmit
frequency.
With the RIT switch ON, the receive frequency can be
adjusted by uslng the RIT control.
With both the RIT and XIT switches ON, both the transmit
and receive frequencies can be shifted.
For XIT switch operation, refer to Section 4.4 "Transmission
(11)".
NOTE:
When the RIT is ON. transmit frequency is different from the
receive frequency. For normal operation, leave the RIT
switch OFF. It should be turned ON only when needed.
(5) IF SHlFT
The IF SHlFT control is used to shift the passband of the IF
fdter without changmg receive frequency. By turning this
control in either direction, the IF passband is shifted as
shown in Fig. 4-3.
The IF SHlFT is effective in eliminating interference when
the receive signal is superimposed on nearby signals during
operation in both SSB or CW mode.
Turned ~n
0
d ~ r e c l ~ o n
Turned ~n @ d ~ r e c t ~ o n
I F f ~ l t e r passband
character~stlc
I
IF SHIFT IF SHIFT IF SHIFT
Turn In d~rectlon to
elmmate
mterference
from s~gnal B
Turn
In
@ direct~on to
el~m~nate ~nterference
from s~gnal A.
Fig. 4-3 IF SHlFT CONTROL
(a) USB MODE (10 MHz and above)
Adjust the IF SHIFT control in the (
+ )
direction and lower
frequencies are cut. Adjust the control in the ( - ) direction
and high frequencies are cut.
(b) LSB MODE (7 M H z and below)
Adjust the control in the
(
+
)
direction and higher
frequencies are cut. Adjust the control in the
( - )
direction
and low frequencies are cut.
(C) CW MODE
By using the IF SHIFT in conjunction with the RIT, tone
quality can be adjusted.