Kenwood TS-130S Service Manual page 4

TS-A30SV
CIRCUIT DESCRIPTION
SPEECH PROCESSOR CIRCUIT (X54-1550-00)
RX.TX MIX(1);}MIX(1)] _..
Band Frequency VCO Input | Output Divider}; DC BA
The AGC-type speech processor is composed of Q2:yuPC1158H2, 35 35 12.33 | 14.33 20 1/4 1100
Q3:2SC1815(Y) and D3:1N60. ~40 ~12.83 | ~14.83
_ The audio signal amplified by Q18 on the AF-GEN unit goes
. , 7 7.0 15.83 | 14.33
through diode switche D1: 1S1555 to the MIC control when the pro- ; 1.5 1/3 1101
cessor switch is OFF. When the processor switch is ON the audio 5 16.33 | ~14.83
signal,which is compressed and gains talk-power by the speech 10 10.0 18.83 | 14.33 45 19 10111
processor circuit, goes through D2:1S1555 to the MIC control. ~10.5 | ~19.33 | ~14.83
Q1i(V type) or Q1i1 (S type):2SK30A on the filter unit is cut off 14 14.0 22.83 | 24.33] , 5 1/3 1101
when the processor switch is ON to shorten the ALC time constant ~145 ~23.33 | ~24.83
to increase the average RF output power. 18
18 0 26.83 | 24.33 2.5 1/5 1011
~18.5 ~27 33 | ~24.83
TS-130 FREQUENCY SYSTEM 210 7983 | 34.33
21 ° 4.5 1/9 0111
The TS-130 employs single conversion with a unique PLL circuit, ~21.5 ~30.33 | ~34.83
as shown in Fig. 1. 245 24.5 33.33 | 34.33 1 1/2 1110
The frequency system is basically that of the TS-820 with the ex- ~25.0 | ~33.83 | ~34.83
ception of the PLL circuit. 28 28.0 36.83 | 34.33 25 1/5 1011
~28.5 ~37.33 | ~34.83
PLL CIRCUIT ,
28.5 8.5 37.33 | 34.33 3.0 1/6 1010
~29.0 ~37.83 | ~34.83 |
Fig. 2 shows PLL circuit construction and Table 4 shows the fre- 290 37.8 34.33
quency in each circuit. 29 83 3 3.5 1/7 1001
Referring to Fig.1. MIX (3) combines CAR and VFO signals and ~29.5 ~38.33 | ~34.83
is operated straight through to mixer (1) on 3.5, 7 and 10 MHz. 295 29.5 38.33 | 34.33 40 8 11000
MIX (2) operates at 14 MHz and above with the output of MIX (3) ~30.0 ~38.83 | ~34.83
i i ; h i n Table 4. MIX (1 tout ij to provide mixer (1) input, as shown in (1) ou pu is Table 4. The frequency chart
filtered, amplified, shaped and divided by the programmable divider
to obtain 500kHz output.
FROM RF AMP CREO" ~ XTAL
M 1X(RX) 8.83MHz | FILTER m1 IF AMP —] DET FP AF
, y
PLL UNIT eee
7 === 7 7
| vco ei MIX(1) pat ¥ BPF2 | |
|
| y
1.0~ 10MHz
\ |
| USB 8.8315MHz
| 4. SMHz (14,18) 2 | LSB 8.8285MHz
| or 20MHz in 1} cwiR) — 8.8315MHz
te} Po BPF1 | 28)-—by MIX(2) | Jes |} cw(t) — 8.8307MHz
|
: 5 tH |
| 500KHz
;
3 14.33~14.83
|
x1
Q (8.8315)
ae AMP | BPF 3 MIX(3) feat CAR OSC or
| | —O- (8.8285)
: | ) : X2
Lt a ee Leo IF SHIFT
_—@
1O0MH
- y 5.5~6.0MHz
500KHz COUNTER With STBY/REC VFO
switch to SEND,
UNIT VFO frequency Oo
y goes up 800Hz. gon '
BPF
<j mixx) IF AMP ft otter BM }<—— MIC AMP
'\ Common to RX and TX S/S
Fig. 1 TS-130 Frequency configuration