Kenwood SP 230 Service Manual

Page 1

$KENWDDD ' 515

SERVICE MANUAL

TS-53OS/SP/D* 121132?qu

SP-230, VFO-240, [IT-230, PK-3*

HF TRANSCEIVER

For Service ManuaIs Contact
MAURITRON TECHNICAL SERVICES
8 Cherry Tree Rd, Chinnor
Oxon OX9 40!

Tel:- 01544-351694 Fax:- ()1va
Emaila enmities©craurilromom

SP-230 TS-SBOS VFD-240 AT~230
CO NTE NTS
SPECIFICATION .......................... 2 COUNTER UNIT (X54-1540-OO) ............ 19
CIRCUIT DESCRIPTION .................... 3 PARTS LIST ............................ 20
AC VOLTAGE CONVERSION ................. 9 PACKING .............................. 27
INSIDE VIEWS .......................... 10 DISASSEMBLY .......................... 28
PC BOARD VIEWS/CIRCUIT DIAGRAMS ADJUSTMENTS ......................... 33
RECTIFIER UNlT IX431370-02) ............ 11 LEVEL DIAGRAM ........................ 45
ANT RELAY BOARD (J253015~04) .......... 11 VFO<24O .............................. 46
SWITCH BOARD (J25-3016-O3) ............. 11 AT<230 ................................ 48
FINAL UNIT (X56-1380-00I ............... 11 SCHEMATIC ABBREVIATION ............... 51
VFO UNIT (X40-1170-00) ............... 12,13 SCHEMATIC DIAGRAM (8 TYPE) ............. 53
AF UNIT (X49-1150-00) ................ 12,13 SCHEMATIC DIAGRAM (SP/D TYPE) ........ 53,54
IF UNIT (WIS-131000) ................ 14,15 BLOCK DIAGRAM ....................... 54
PLL UNIT (X50~1680~01) ............... 16,17 SP-230 ........................ BACK COVER
RF UNIT (X44-1360~01) .................. 18 PK-3 ......................... BACK COVER

Page 2

firs-530$

SPECIFICATIONS

[GENERAL]

Frequency Range.

160 m Band 1.8 ~ 2.0 MHz
80 m Band 35 ~ 4.0 MHz
40 m Band 7.0 ~ 7.3 MHz
30 m Band 101 ~ 10.15 MHz
(10.0 MHz WWV)
20 m Band 14.0 ~ 14.35 MHz
17 m Band 18.068 ~ 18.168 MHz
15 m Band21.0 ~ 21.45 MHz
* 12 m Band 24.89 ~ 24.99 MHz
10 m Band 280 ~ 29.7 MHZ
SSE/CW
Within 1 kHz during the first hour after 1 minute of warmup.
Within 100 Hz during any 30 minute period thereafter.
1 10VAC/120VAC/24OVAC, 50/60 Hz
Transmit: 295 watts
Receive: 27 watts (with heaters off)
333 (13.3) x 133 (5.3) x 333 (13.3) mm(inch)

Modes ....................
Frequency Stability ..

Power Requirement....
Power Consumption

Dimensions.

Weight......... 12.8 kg (28.2 lbs)

[TRANSMITTER] TS-53OS/SP TS-SSOD
" Final Power Input .................................... 220W PEP for $53 operation 160W PEP for SSE operation
180W DC for CW operation 130W DC for CW operation

Audio Input impedance .. 500!) ~ 50 k9

RF Output Impedance. 50.0 ~ 7552

Carrier Suppression . Better than 40 dB

Sideband Suppression Better than 50 dB

Spurious Radiation ...... Better than 60 dB

Harmonic Radiation Better than 40 dB

Audio Freq. Response. 400 to 2,600 Hz, within «6 dB

ALC Input -10V DC Max

- For Service Manuals Contact

Linear Amp Relay Contact Ratlng 100V DC 1 A MAgRlTHON TECHNICAL SER

[RECEIVER] °"%"!£Ei§2§¢'"°

lel:- 01844351694 Fax:- 01844352554

Receiver Sensitivity . Email:- enmirles®mauritromoom

0.25 #Vat 10dBS+N/N

Image Ratio. Better than 60 dB
IF Rejection .. Better than 70 dB
Receiver Selectivity
SSE/CW ................................................ 2.4 kHz (-6 dB), 4.2 kHz (-60 dB)
CW Optional Filter
YK-88C 500 Hz (-6 dB), 1 .5 kHz (-60 d8)
YK<88CN 270 Hz (-6 dB), 1.1 kHz (-60 dB)
SSB Optional Filter
YK-BBSN 1.8 kHz (-6 dB). 33 kHz (-60 dB)
Notch-filter Attenuation Better than 20 dB(1.5 kHz)
Audio Output Impedance .. 8 ~ 169
Audio Output ................... 1.5W (8.0)
NOTE: The circuit and ratings may be changed without notice due to developments in
technology.

NOTE: For the TS-53OSP shipped to the USA, and for the TS»5300.

" Will transmit on the 17 and 12 meter bands,
Diodes installed for preventing accidental transmission before government Amateur
authorization.

Page 9

CIRCUIT DESCRIPTION/AC VOLTAGE CONVERSION

3. Speech processor [Part of IF unit (X48-131D-00I]

This is an audio compression speech processor. When the
processor switch is OFF, the audio signal amplified by 011
(on the IF unit) passes through buffer amplifier 012
(25C1815Y) and is then applied to the MIC pot via diode
switch 024 (151555).

When the processor switch is ON, the audio signal amplified
by C112 is applied to the AGC sisting of Q13 lpPCliBSHZl, 014 l2SCI815Y) and 026
(IN60). The speech processor effectively increases the
"talk power" of the audio signal and feeds it to MIC pot via
diode switch 025 (1 Si 555).

When the processor is ON. the ALC time constant is short-
ened by turning 030 (ZSKSOA) in the AF unit OFF to
heighten processor effect.

4. RIT/XIT operation

Conventional RlT function is provided by the RlT/XIT
control. By also turning the XIT switch ON, the trans-
mission frequency is shifted to the same frequency as
received under FilT control.

For Service Manuals Contact
IMURITHON TECHNICAL SERVICES
8 Cherry Tree Rd, Chinnor
Oxon OX9 4QY
Teli- DIEM-351694 Fax:- 01844452554
Email:- enquirimmiaurilmnmuk

CENTER 8.53MN1

TS~530(K) AC VOLTAGE CONVERSION

To operate the TS-SBOS (K) on 240V AC. the power
transformer split primaries must be rewired from parallel to
series connection.

1 Unplug the AC power cable.

2 Remove the bottom cover.

3. Remove the jumper Wires between the two to terminals
and two 120 terminals on the bottom of the power
transformer

4. Connect the adjacent l20 and 4: terminals at the middle
of the transformer This will provide 240V AC operation.
For 220V AC operation, Change the Wires from 120 to
100 Winding

5. Change the AC fuse from GA to 4A. Tag the power cord
at the back of the radio to indicate that the transformer is
strapped for 240V AC. and the power fuse should be 4A.
and not 6A

6 Replace the bottom cover and reconnect power to verify
your work

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VFO frequency goes 1 GMT) we only during reception in the USB,

800 Hz up at CW transmit.

CW (R) or LSB mode.

Fig. 8 IF SHIFT Block diagram

15-5305 I

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