TS-590SG
24
Ref. No.
Use / Function
Operation / Condition / Compatibility
Q321~324 RX mixer
Receiving 1st mixer
(HF
→
73.095MHz)
Q351,352 Amplifi er
RX LO1 amplifi er (RX 1st IF of
73.095MHz is selected)
Q391
Amplifi er
RX 1st IF amplifi er (RX 1st IF of
73.095MHz is selected)
Q421
Switching
Gain correction between 1st
IF (ON when TX or RX 1st IF of
73.095MHz are selected)
Q431
Amplifi er
LO2 amplifi er (ON when TX or RX
1st IF of 73.095MHz are selected)
Q451
Amplifi er
RX 2nd IF amplifi er 1
(10.695MHz/ 11.374MHz)
Q453
Switching
Gain correction between bands
(ON when receiving 21.5~30MHz
and PRE ”H” are selected)
Q454
Switching
Gain correction between bands
(ON when receiving 30~60MHz
and PRE “H” are selected)
Q455,456 Switching
ON when BLNK signal is “H”
Q471~477 Switching
IF fi lter selection
Q521,522 Amplifi er
RX 2nd IF amplifi er 3
(10.695MHz/ 11.374MHz)
Q541
Amplifi er
RX 2nd IF amplifi er 2
(10.695MHz/ 11.374MHz)
Q571
Amplifi er
LO3 amplifi er (ON when RX AM/
SSB/ CW/ FSK mode is selected)
Q631
Switching
Receiver output, FM (AF) and
SSB/ AM/ CW (IF) changeover
multiplexer (IC631) control
Q641
Buffer
Noise blanker input buffer
Q651
Amplifi er
Noise blanker IF amplifi er 1
(10.695M/ 11.374MHz)
Q642,643 Switching
Power supply control of NB UNIT
(ON when NB1 function is selected)
Q652,653 Amplifi er
Noise blanker IF amplifi er 2
(10.695MHz/ 11.374MHz)
Gain is controlled according to
the NB voltage
Q654
Switching
ON when Noise Blanker IF of
10.695MHz is selected
Q663,664 Amplifi er
Noise blanker IF amplifi er 3
(10.695M/ 11.374MHz)
Gain is controlled according to
the NB voltage
Q665
Switching
ON when Noise blanker IF of
10.695MHz is selected
Q666
Amplifi er
Noise blanker IF amplifi er 4
(10.695M/ 11.374MHz)
Gain is controlled according to
the NB voltage
Q667
Amplifi er
Noise blanker AGC control ampli-
fi er
Q668
Switching
ON when noise blanker IF of
10.695MHz is selected
Ref. No.
Use / Function
Operation / Condition / Compatibility
Q669
Switching
Audio mute signal generation
Q670
Buffer
Noise Blanker IF buffer
Q671
Switching
Audio mute signal generation
Q702
Buffer
TX IF buffer (10.695MHz)
Q721
Amplifi er
TX IF amplifi er (10.695MHz)
Gain is controlled according to
the ALC voltage
Q741
Switching
Transmission IF mute control
(Mute when ON)
Q742
Amplifi er
TX IF amplifi er (73.095MHz)
Q781
Switching
ON when drive output is selected
Q782
Switching
ON when ANT connector output
is selected
Q783
Amplifi er
TX drive output amplifi er
Q784
Switching
Power supply control of TXB to Fi-
nal unit (X45 A/2) (ON when ANT
connector output is selected)
Q785
Switching
ATT changeover relay (K102) control
(ON when DRV or ANTOUT is ON)
Q802
Switching
On in AM mode, makes it an
average value type ALC
Q803,804 Amplifi er
ALC amplifi er
Q861,862 Switching
Cancels the time constant for
VSF and VSR voltage lines during
antenna tuning
Q903~905 Switching
Power supply control of TXB
(ON during transmission)
Q906,907 Switching
Power supply control of RXB
(ON during reception)
Q908
Switching
Power supply control of RX 1st
IF circuit (ON when RX 1st IF of
11.374MHz is selected)
Q909
Switching
Power supply control of RX 1st
IF circuit (ON when RX 1st IF of
73.095MHz is selected)
Q910
Switching
Power supply control of RX 1st
IF circuit (ON when RX 1st IF of
11.374MHz is selected)
Q911
Switching
Power supply control of RX 1st
IF circuit (ON when RX 1st IF of
73.095MHz is selected)
Q914,915 Switching
Power supply control of FM
circuit (ON when RX FM mode is
selected)
Q916
Switching
Power supply control of 3rd IF cir-
cuit (ON when RX AM/ SSB/ CW/
FSK mode is selected)
Q917,918 Switching
Power supply control of FM
circuit (ON when TX FM mode is
selected)
Q919
Switching
Power supply control of 3rd IF circuit
(ON when RX SSB, AM and CW
mode are selected)
COMPONENTS DESCRIPTION
Содержание TS-590SG
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