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PDF TS-590S Data sheet ( Hoja de datos )
| Número de pieza | TS-590S | |
| Descripción | HF / 50MHz ALL MODE TRANSCEIVER SERVICE MANUAL | |
| Fabricantes | Kenwood | |
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TS-590SHF / 50MHz ALL MODE TRANSCEIVER
SERVICE MANUAL
© 2010-9 PRINTED IN JAPAN
B51-8941-00 (N) 283
Phone jack (9P)
(E11-0705-15)
Key top (8key)
(K29-9466-02)
Panel
(A62-1176-02)
Front glass
(B10-2799-02)
Key top (5key)
(K29-9469-02)
Knob (RIT)
(K29-9471-03)
Knob (MULTI)
(K29-9456-23)
Foot (Front)
Key top (25key)
(J02-0442-04)x2 (K29-9467-02)
Knob (Main knob) Key top (20key) Knob (Inside/HI)
(K21-1107-13)
(K29-9468-02) (K29-9477-03)
Knob (Outside/SQL,RF)
(K29-9391-13)x2
RF coaxial receptacle (Round)
(E06-0858-25)
Foot (Front)
(J02-0440-04)
Knob (Outside/LO) Knob (Inside/NOTCH,AF)
(K29-9478-03)
(K29-9390-03)x2
RF coaxial receptacle (M)
(E04-0167-15)x2
Lead wire with connector (EXT.AT) Lead wire with terminal
(E37-0891-25)
(E37-1480-05)
Sub socket (D)
(E58-0529-05)
3.5D phone
jack (3P)
(E11-0414-15)
DIN socket
(E06-0752-15)
Phone jack (9P)
(E11-0705-15)
Foot (Back)
(J02-0475-05)x2
Rectangular receptacle DIN socket
3.5D phone jack (3P) Pin jack
(E58-0537-05)
(E56-0408-15) (E11-0455-05)
(E13-0166-25)x2
This product complies with the RoHS directive for the European market.
This product uses Lead Free solder.
1 page  
CIRCUIT DESCRIPTION
TS-590S
Frequency Configuration
Figure 1 shows the frequency configuration of this trans-
ceiver.
While transmitting, FM mode operates in a double con-
version and other modes (AM, SSB, CW, FSK) operate in a
triple conversion.
While receiving, the first IF operates in 73.095MHz triple
conversion. In modes other than FM, the third IF is 24kHz,
and the IF signal is converted by an A/D converter and input
into DSP. The FM mode is detected in the FM IC, and the
audio signal is converted by an A/D converter and input into
the DSP. Under the following conditions, the first IF oper-
ates its reception in 11.374MHz double conversion.
1) Modes other than AM or FM
2) Amateur band within the 1.8/3.5/7/14/21MHz bands
3) DSP filter’s bandwidth is 2.7kHz or lower
RX-1
ANT
RX MIX 11.374MHz
IFB 1st IF
RX MIX
RX-2
TX MIX
73.095MHz
1st IF
IFA
TX/RX
MIX
PLL
AD4111
455kHz
3rd IF
10.695MHz
2nd IF
FM
FM IC AF
NJM2591
TX
MIX
except RX MIX
FM
24kHz
24kHz
ADC
DAC
x2
VCO
x2
FM MOD
DSP
DAC AF OUT
ADC MIC IN
DDS
AD9951
DDS
AD9835
x2
X502
15.6MHz
Fig. 1 Frequency configuration
Reference Signal Generator
The reference frequency (fstd), which is used to control
the individual LO frequencies, oscillates at 15.6MHz in a
crystal oscillation circuit (X502, Q501). This 15.6MHz signal
passes through a buffer (Q502) and is doubled in a multiplier
(Q503) to generate a 31.2MHz signal. The 31.2MHz signal is
used as a reference signal for LO3 (the third local oscillator)
DDS (IC601). The 31.2MHz signal is doubled in multipliers
(Q504, Q505) to generate a 62.4MHz signal. The 62.4MHz
signal is used as a reference signal for LO1 (the first local
oscillator) PLL (IC801).
The SO-3 (TCXO unit: 15.6MHz) is configured as an op-
tion in this transceiver, so that you can replace the crystal
oscillation circuit (X502, Q501) with the SO-3. When using
the SO-3, remove the CN903 and CN904 short jumper wires
in order to stop the operation of the crystal oscillation circuit
(X502, Q501).
LO1/ LO2/ LO3
■ LO1 (the first local oscillator)
The VCO (Q806) oscillates at 196.8MHz. Only the double
frequency component, 393.6MHz, of this VCO’s oscilla-
tion output is extracted and input into PLL (IC801) pin 6.
This input signal is divided into 1/N within the PLL. Also,
the 62.4MHz signal (15.6MHz reference frequency x 4) is
input into PLL pin 8 and divided into 1/R within the PLL. By
a phase comparator in the PLL, the frequency divided into
1/N and the frequency divided into 1/R are compared, and
then the frequency is locked. The comparison frequency (fø)
at this time is 120kHz when transmitting FM, and 2.4MHz
otherwise.
393.6MHz signal locked by PLL (IC801) would be used
as reference by DDS (IC803). The output signal from DDS
(IC803) is 12.495MHz to 32.195MHz when RX-1 path is
selected, amplified at the broad band amplifier (IC804),
5
5 Page 
CIRCUIT DESCRIPTION
TS-590S
from Pre Amp
(Q236)
RX-1
LP+F
11.374M
NOTCH
Q263~Q266
1st Mixer
XF301
11.374MHz
MCF
RX-2
LPF
~60MHz
Q281,Q282
LO1 Amp1
Q321~Q324
1st Mixer
XF371
73.095MHz
MCF
TX
Q351,Q352
LO1 Amp2
13.174~32.195MHz
LO1
73.125~133.095MHz
Q391
1st IF Amp
TX
11.374MHz
D422,D423
2nd Mixer 10.695MHz
TX
Q431
LO2 Amp
LO2
62.4MHz
to 2nd IF Amp1
(Q451)
IF input D443
(10.695M)
D461~D464
Blanking
D471
IF input D441
(11.374M)
Q451
2nd IF Amp1
XF472
10.695M 15k
D474 XF471 D475
D522~D524
D476
ATT
Q521,Q522 D525
2nd IF Amp3 ATT
Q541
2nd IF Amp2
AGCV
IFGC
IF output
(10.695M/11.374M)
10.695M 6k
D472 XF473 D477
10.695M 2.7k
D472 XF474 D477
11.374M 2.7k
D473 XF475 D478
11.374M 500
Fig. 4 From the preamplifier (Q236) to the second IF frequency (10.695MHz/11.374MHz)
■ From the second IF to the AF output
The signal that passed through D525 then goes through
D526 and enters the FM wave detecting IC (IC591) in FM
mode, and the AM/SSB/CW/FSK wave detecting mixer
(D551, D552) in other modes.
The FM mode signal is mixed with LO3 (10.240MHz) in
the FM detecting IC (IC591), and converted into the third
IF (455kHz). The third IF signal passes through the ceramic
filter (CF591), demodulated into audio signals, and is then
amplified by the FM AF amplifier (IC592).
Signals of modes other than FM are mixed with LO3 (RX-1
path: 11.398MHz, RX-2 path: 10.719MHz) in the AM/SSB/
CW/FSK wave detecting mixer (D551, D552), are converted
into the third IF (24kHz), and are then amplified by the third
IF amplifier (Q551).
Signals of FM mode and modes other than FM are sent
from the TX-RX unit (X57-785 A/2) RIF connector (CN600) to
the Control unit (X53-446 A/3)’s CN61.
The signal input into the Control unit (X53-446 A/3) is am-
plified in the operation amplifier (IC64, IC65), A/D conversion
is carried out by the A/D converter (IC66), and then the DSP
(IC301) filtering, volume control, subtone decoding, etc. are
carried out. The output signal from the DSP is converted by
the D/A converter (IC72), amplified as an audio signal in the
AF power amplifier (IC67), and is then sent from the Control
unit (X53-446 A/3) AF connector (CN65) to the TX-RX unit
(X57-785 A/2) CN3, and output to the PHONES jack (J951)
(first priority), EXT.SP jack (J1) (second priority), or internal
speaker (third priority).
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TS-590S.PDF ] | |
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