Kenwood VS-1, PS-50, SP-430, PS-430, MB-430, AT-440, YK-88C, YK-88SN Circuit Descriptio N, Ipll

Page 5

TS-440S

CIRCUIT DESCRIPTIO N

ANT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30 K

 

2nd MIX

 

 

3rd MI X

 

 

 

 

 

 

DET

 

 

 

 

30MHz

1st MIX

 

 

 

 

 

 

 

 

D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AF OU T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

/

 

\ I

D

 

5 KHZ

I

 

 

 

 

 

 

 

 

 

 

6 .22MHZ

P

120KHZI

1= 1800 1=450 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J=72441=1811 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CA R

 

 

 

 

 

 

 

 

 

 

 

FM MOD I

 

 

I / 1

I I F M

AMR,FM R

 

 

 

 

 

 

 

 

 

 

 

 

: 455 KH z

 

 

 

 

 

 

 

 

 

 

 

 

1/1 0

AMT, FMT

 

 

 

 

 

 

 

IPLL 51

 

 

 

USB, CW

 

: 456. 5

 

 

 

 

 

 

HI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LSB, FSK

: 453 . 5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MIX 5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4 .55MH

 

 

 

 

 

 

 

 

 

IX 4

 

 

 

 

 

 

1/2 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IPLL31

 

9.9—10 4MH

 

 

 

 

 

 

58.25-u

 

 

 

 

 

 

I/1 0

1/ 5

 

 

 

 

 

 

53.25MHz

 

 

 

 

 

 

 

 

91 MH z

AM,FM

: 91 MH z

 

 

 

 

 

 

BP F

64.78 =

 

 

 

 

I .98^-2.08MHz /'—1

USB,CW

: 91 .3 MH z

 

 

 

 

 

 

59 .88MHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LSB,FSK

: 90 .7MHz

 

 

 

 

r

 

 

 

 

 

 

99=104MH z

 

 

 

 

 

 

 

 

 

 

 

(98_6 =103.6MHZ)

 

 

 

 

 

IPLL11

I /P o rI

 

 

 

 

 

 

 

—

 

IPLL4I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 /P-

1

 

 

 

 

P.D

 

 

 

 

 

 

 

 

 

I p,D

I/ M

M=323 9

 

5KHZ

P .D

5KH z

I

AM,FM

: K=18200

 

F

 

 

} 20KH Z

 

299 4

 

 

 

 

)Cw R

 

 

 

 

STEP 5

 

 

 

 

 

 

 

USB, CW

K=1826 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P D

I/N,I/A--L

1/450

 

 

 

Y I/L

 

11/1800

I/K

1/180 0

 

LSB,FSK

K=1814 0

 

 

L=19800

 

 

 

 

SOOKHZ

INT=13-.73

 

T _ MN614 7

`_

MN614 7

—

 

—

 

 

 

 

 

 

L—

1

—

 

 

 

 

 

 

 

 

 

 

 

MKR —

I/1 8

NT=PN-A I

 

I

20799

4

 

 

 

 

 

 

 

 

--- -

 

 

 

 

 

(=13720_ .20719)

11

 

 

 

 

 

 

 

 

7006 J

 

 

 

 

 

RIT, XI T

 

 

 

 

 

 

Fig . 2 PLL frequency configuratio n

As shown in figure 2, all received frequencies excluding th e local oscillator frequency fLo are generated in the PLL circuit . The frequencies generated in these loops are expressed a s follows:

VCO5 :

fvcos

4 fsTD

 

 

41

 

2

 

I

fvcos

=

fSTD

J

 

VC04:

fK04

4

-fsTD

. fvco4 = 7200 fSTD . . .

3

800 •

 

 

 

 

 

 

 

 

VCO3 : fvLos =

4 .fsTD

 

 

L

 

4

 

 

 

 

 

 

800

fvcos = 7200 fSTD . . . .

 

 

 

 

 

 

 

 

 

fvcoz + fvco3 + fvco4

1

'fsTD

 

VCO2 :

 

50

20

4

 

 

 

M

 

450

 

 

 

 

 

 

 

 

 

 

 

M

fsTD

fvco

_s

fvco4

5

 

fvcoz = 1800

 

50

 

20

 

 

 

 

 

 

 

 

 

fvcos — fLo — fSTD + fvcoz

1

fsTD

 

 

4

 

VC01 :

 

 

 

10

 

 

 

 

N

 

 

 

1 8

 

 

 

 

 

 

 

 

:. fvcos = 72 fSTD + fLo + fSTD f102 . . 6

Based on these formulas, the frequencies fvcor fHET, and fCAR are expressed as follows :

fvco = fvcor =

/

N

M

L

(

72

1800 + 3600000

 

 

K

 

7

 

+ 1440000 + 1) fsTD + fLo

 

J

fSTD

 

8

fHET = fVCO5 = 41

 

fcAR

fvco4

K

fSTD

9

200

1440000

 

 

 

Formula 1 may now be rewritten as follows :

N _

M

L

J

 

fIN 1 72

180000 + 3600000

41 + 1 ) . fsTD

 

 

 

1

0

Note that f Lo is not included in formula 10 . That is, a received frequency is determined by the reference frequen- cy fsTD and frequency division data Ito N. Further analysi s of formula 10 shows the following :

i)Basically, frequency division data I to N contain no er- ror because they are controlled by the microproces- sor according to the operating frequency .

ii)The accuracy of the operating frequency is equal t o that of the reference frequency, because all frequen- cies other than fsTD in formula 10 are determine d by the microprocessor .

iii)The operating frequency does not change even if k o r fLo changes .

When fIN = 14 MHz (USB mode) in formula 10 , fIN and fSTD have the following relationship :

5

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Contents KEN Wood TS-440S Semiconductors DimensionsImage ratio If rejection Selectivity SensitivityFrequency accuracy RIT/XIT OFF Frequency stabilityFig Frequency configuratio n Ipll Circuit Descriptio NUSB, LSB, FS K Fig Receiver circuit configuratio nAM, FM Displayed frequencie sFig Selectivity control circuit Circuit DescriptionCeramic filter L72-0355-05 if Unit CF2 Filter selectiveMCF L71-0259-05 RF Unit Fl BX7I91- 851 Circuit Descriptio NBX719 D27 D2 Fig Notch circui tTransmitter Circuit Descriptio n TS-440$ SWR automatic arithmetic circuit Fig Antenna tuner circuitSWR protection circuit Controlsemi Fig -2 FULL/SEMI BREAK-IN timing chartFig -1 FULL/SEMI BREAK-IN block diagra m Fig Standby keying timing char t Circuit DescriptionFig -3 FULL/SEMI BREAK-IN timing char t Circuit Descriptio N PLL3 Fig PLL circuit block diagra m PLL4Unloc k Circuit Descriptio NFig Control circuit block diagra m Circuit DescriptionFig Encoder circui t Fig Encoder waveform timing chartKey scan matrix Fig Digital circuitRIT If Shift %--- 1 9 LFig A/D convertor circui t RL output 7800 port A6 Reset output 7800 port B7BZ Buzzer output 7800 port A7 MT output 8255 IC2 port A7VCO SW VCO Band information 7800 PBo 3, B3B2B1B oFig Band information generation circuit BCD DEC~ t Fig Mode control circuitControl unit X53-1450 Expand functionBZ OFF Operation procedureTES T Conditio nSW Monitor Display changes by Test numbe r SN74LS138H Control unit IC51 TOP View ResetRese T SE T DAT a Clock AD C MB4052 Pin Descriptio n Signal Pin Function sCLK DataSN74LSI38 BPDSemiconducto R NF B Semiconducto RPin connectio n TPD8255AC-5 Control unit IC2 SCK Semiconducto RChip capacitors Parts ListFor Europ e For Australi a For U .S .AM2 General Marke T DC Power Cord ASS Y Warranty CardWire with Conneltnr Fuse 20AACCESSNR YParts No Description Desti Ref . No AddressRP. * -g Nation 40HFR MAfN PnnhSwitch Unit PIN Connectnr CC45RHIH330J Ceramic CeramicCeram IC Cerom CCE04W Odium Elec CRO ElectrCE04WIH010M Electro CE04IAIHO Elec .1RONatio n Address New Parts No Descriptio n DestiCC45CF-II.HO50C Ceramic Cnnnect I NG WireCeramic Ooopf Elec -FRO OUFDesti- Re nation mark s Address New Parts No DescriptionDesti Nation Address New Parts No IR .gDesti Re nation mark s Ref . NoParts No Descriptio n Ceramic 56OPF New PartsCK45FIH223Z Ceramic PUL LEY ScrewRAN Hfad Machine SCR K W Prone R5004`-,0111-1220 Ceramic 6BPF CiooCeramic 1OPF CC45CHI.F-IOR5C Ceramic0107 L40EIOII-13 Small Fixed Inducto R Small Fixed Inducto RSmall Fjxed Inducto R Oscillating LOILVCO395MH7Desti Re nation marks CST Trmming POT 50V Protectio N LOUMimng POI RelayEleltpn Elellrn 47LIFOoiuf Ceramic Hinf112 AT Unit TS-440S G5 a It ,4-$ CK45FIH223Z Ceramic Ceramic OioufCC45SLIHO50C Ceramic CK45FIIJ223Z CeramicCE04WIH010M CO92M1H1O3KCE04W1HR47M CE04W H4RIMSig 1F F TS-440$ DTC114ES Digital Transistor BDF PC Board TS-440SPW M NilY016 C36 Tl .I J PLL Unit Page Page Page Page Page Page Page Page Disassembly Sems Disassembly55x2 OcDC o TS-440E/8 000- N TS-440S Packing REC Adjustmen TJapanese SG American SG 25µ Detector AdjustmentSpectrum Analyzer SPE-ANA RF Gain MAX Mode USB Stby REC Power on DC V .MMode USB Mode a MUnit Adjustmen T 5612 DI P Mode F MANT AN T VR6Stby SEN D Mode SW Power SW OFFMode USB Function SW aTOP View ITP8I TP11I ITP1 TP3TP4I Adjustment AF Output 0 .68V/811 MV AF 25mV 4.9mVInput DBu 44 FMMIC MI C If UnitRF UNI T TIF DRV=KO= Power SW on Power SW of FPS-50 AL Power for D Warranty AP BAC Power ORD AF Power CordPower Ironsinrmer Wire HAN DPower Cord Pushing NotRI1 RS14GB3A01DJJZF1OD FL---PROOF RS220V Version 240V Version Schematic Diagramipc Boar DRS14GB3D4R7J Specificationsiparts LIS TSLP144B CS15E1EO10M CS15E1VOR1M CE04W1HR22MMN6401TRA IC N IC N ICLanguag E Select Schematic DiagramPage MB-430/SP-430 WeightRatin g YK-88S/SN,YK-88C/C NIncorporated in N .S Communications & Test Equipment Grou P
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SP-430, VS-1, PS-430, AT-440, YK-88C specifications

The Kenwood MB-430, PS-50, YK-88S, YK-88CN, and YK-88SN are notable components that enhance the capabilities of Kenwood's transceiver products, particularly in the amateur radio segment. Each of these units plays an essential role in expanding functionality, improving performance, and providing users with valuable features that are beneficial in various communication scenarios.

Starting with the Kenwood MB-430, it serves as a versatile mobile bracket designed for specific Kenwood radio models. The MB-430 enhances mobility, allowing operators to mount their radios securely in vehicles or portable setups. Its sturdy construction ensures reliability during operation, and it offers a simple installation process, making it user-friendly for both beginners and seasoned enthusiasts.

The PS-50 power supply is a crucial accessory that complements Kenwood's transceiver line. This power supply is known for its compact design, providing 13.8 V DC output, which is essential for powering radios effectively. With a current rating that adequately supports various transceivers, the PS-50 is equipped with short-circuit protection and thermal overload features. These safety mechanisms protect both the power supply and the connected equipment, making it a dependable choice amongst operators.

The YK-88S, YK-88CN, and YK-88SN are all filters that enhance the performance of Kenwood transceivers. The YK-88S is a high-performance SSB filter, designed to improve the clarity of SSB signals while reducing adjacent channel interference. It offers narrow bandwidth options that facilitate more precise tuning, making it particularly valuable in crowded band conditions.

Meanwhile, the YK-88CN is known for its crystal filter technology, optimizing the transceiver's performance for CW and digital modes. This filter helps in eliminating unwanted noise, allowing operators to enjoy clearer reception and improved decoding of weak signals.

The YK-88SN, similar in function to the YK-88S and YK-88CN, provides additional narrow filtering options, enhancing the agility of transceiver operation in various modes. It effectively enhances selectivity and reduces interference from strong signals, providing a cleaner audio output.

Together, these components contribute to a seamless operating experience for amateur radio enthusiasts. Whether enhancing filter characteristics, providing reliable power, or ensuring secure mobility, the MB-430, PS-50, YK-88S, YK-88CN, and YK-88SN demonstrate Kenwood’s commitment to quality and performance in the radio communications field.
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