Kenwood TS-440S Service Manual page 93

• RX A D J U STM E N T
Item
Condition
1 . IF AMP FREQ : 1 4. 1 750MHz
(common)
MODE : USB
RF GAIN Control : MAX
Use the minimum SSG input
possible during alignment.
2 . 2 n d M I X
FREQ : 1 4. 1 7 50M Hz
balance MODE : USS
Connect the S S G t o A N T termina l .
3. 1 st M IX
FREQ : . 1 00.0 ( 1 00kHz)
balance
MODE : USS
4. IF TRAP FREQ : 29MHz Band
SSG : 45.05MHz
OUT : 80 d Bµ
5. RX D ET 1 ) FREQ : 1 4. 1 7 50 MHz
Balance MODE : USB
RF G A I N : MIN
IF S H IFT : C ENTER
RF GAIN : MAX after
adjustment
6. IF AMP FREQ : 1 4. 1 7 50MHz
(SSB) SSG : 1 4. 1 760 MHz
OUT : 0 dBµ
MODE : USS
7. IF AMP FREQ : 1 4. 1 750MHz
(FM) SSG 1 4. 1 750 MHz
MOD : 1 kHz, DEV: 3kHz
OUTPUT : 30dBµ
MODE : FM
8. S-METER FREQ : 29.0000MHz
(FM) MODE : FM
SSG : MOD OFF
OUTPUT : 30dBµ
9 . S-METER 1 ) No signal
(SSS) (SSG output: OFF)
2) FREQ : 1 4. 1 7 50 MHz
MODE : USB
SSG output :
3) SSG output : 40dbµ
1 0. Squelch 1 ) MODE : CW
S ELECTIVITY : WIDE
threshold
SOL control : 1 2 o ' clock
1 ) FREQ : 1 4. 1 750 MHz
1 1 . Noise
Blanker NB SW : ON
SSG output : 1 4. 1 75MHz
First adjust 20dB input, then
use the minimum input as
possible.
2) Noise Gen. : Low level
1 ) AF GAIN Control : 1 2 o ' clock
A
1 2. Beeper
Depressing
the same time
2) POWER SW : ON
3) Set to MEMORY CH 1 7 when
turning VFO.
ADJUSTMENT
Measurement
Test
e q u i pm e n t U n it
SSG Rear
AF V . M Panel
Oscilloscope
AF dummy-
load (80)
SSG
AF V . M
Oscilloscope
RF V.M IF
or
Oscilloscope
SSG Rear
AF V . M panel
Oscilloscope
S-meter
Rear
SSG
S-meter panel
SdBµ
S peaker
SSG Rear
DC V . M panel
Oscilloscope
Noise Gen.
SP
AF V.M
�
and key at Oscilloscope
AF dummy
load
Adjustment
Term i n a l
U n it Part
ANT RF T4, 5,3 MAX
EXT.SP
T7,8, 1 5 Repeat 2 - 3 times
9, 1 2, i n case of T4, 5,3, 1 2,
1 0, 1 1 1 0, 1 1
RF VR2 MAX AF Noise level.
VR 1
RF MIN A F noise level .
RF T1 Internal spurius beat
TC 1 M I N .
Q9 IF TC 1 M I N
(emitter)
(R77)
IF L 1 , 2,3 MAX AF output
4, 1 8, 5 Use the minimum
SSG input possible
during alignment.
IF L6 MAX AF output
ANT IF VR3 Ful l scale
Set to starting point.
IF VR2
(Meter zero)
ANT IF L3 S 1
Adjust counter clock-
wise from peak .
(turn s l u g out)
V R3 S 9
Adjust VR slowly and 1 2 o' clock
EXT. IF VR4
stop at threshold .
SP
RF T26 MIN
ANT
R 1 46 27
EXT
SP ( 1 0k!J)
MIN noise level
T26
27
EXT. IF VRIO 1 20mV/80
SP
S pe c ificatio n/R ema rks
Method
S/N 1 0 dB or more at - 6dB
input. l V or more/80 at
AF GAIN control MAX .
Repeat 2 - 3 times 70dB or more
60
T'
40dB ± 6dB
± 1 0mV
TS-440S
30dB ± 1 0dB
9 3