Kenwood MB-430, PS-50, SP-430, PS-430 Band information 7800 PBo 3, B3B2B1B o, Vco Sw Vco, Bcd Dec

Page 23

TS-440S

I

CIRCUIT DESCRIPTION

13. Band information generation circuit (in the R F unit )

Band information from the control unit is sent to connecto r 15 of the RF unit . Band information signals BO to B3 for m a BCD code in which BO corresponds to LSB . Q4D (M74LS145P) is used to convert data from BCD to DEC, an d it generates control signals for ten of the 11 bands . Control signals for the remaining band (25 .5 MHz to 30 MHz) ar e generated in the AND circuit consisting of D57, D58, an d Q46 . These contorl signals go through the current buffer con - sisting of Q41 to Q45 (M54561P and 2SA562Y), and ar e OR'ed by diodes, as required, and sent to AT unit, filter unit , CO, and ANT BPF, as shown in Figure 21 .

Q40 M74LS145P

BCD — DEC

Q41 M54561P Buff \/ x V v 0

042 Q43 Q44

Band information 7800 PBo — 3, B3B2B1B o

 

30kHz -

0

.5MHz

0 0

0 0

0

.5MHz -

1

.6MHz

0 0

0

1

1 .6MHz -

2

.5MHz

0 0

1

0

2

.5MHz -

4MHz

0 0

1

1

 

4MHz -

6MHz

0 1

0 0

 

6MHz -

7

.5MHz

01

0 1

7

.5MHz -

10 .5MHz

01

1

0

10

.5MHz -

14 .5MHz

0 1

1

1

14

.5MHz -

22MHz

1 0

0 0

22MHz -

25 .5MHz

1 00 1

25

.5MHz -

30MHz

1 0 1

0

Table 1 3

I4V

28T (25 .5 . 30 1

0 24T 122 25.5 1

To AT u

0

IT

114 .5- 221

10 I4T 110 .5-- 14.5 1

0

1OT

17.5 '

10 .5 1

 

7T

(6 ~..

7.51

lD60 ~~6 1

D65

 

28F 122 ,-, 30 )

 

 

21F

 

(14 .5-- 22 )

 

D64

0

 

 

141

 

17.5-- 14 .5 1

To Filter u

0ID63

 

0

71'

 

(47-7 .5 1

N1

 

 

D62

0

4F

 

(2.5^, 4 ,

 

 

 

 

 

 

I

0

2F

 

11 .6-- 2 .5)

 

Q17

 

Q21

67.05

75 .0 5

-

•

O

 

122 .. 301

 

I

Q1 8

 

022 I

59.55 ...

67.0 5

 

0

 

 

(

 

 

 

 

 

/J\

1114 .5 .22 1

 

Q

 

Q23 (

52 .55

5

 

 

 

 

1 (7 .5-14 .5 1

 

020

 

Q24 ( 45 .05 52.5 5

 

 

 

 

 

(0 ^ 7 .5 1

 

VCO SW VCO

To RFU BPF

Fig . 21 Band information generation circuit

23

Page 22 Page 24
Image 23
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Contents KEN Wood TS-440S Semiconductors DimensionsFrequency stability SensitivityImage ratio If rejection Selectivity Frequency accuracy RIT/XIT OFFFig Frequency configuratio n Ipll Circuit Descriptio NDisplayed frequencie s Fig Receiver circuit configuratio nUSB, LSB, FS K AM, FMFig Selectivity control circuit Circuit DescriptionCeramic filter L72-0355-05 if Unit CF2 Filter selectiveMCF L71-0259-05 RF Unit Fl D27 D2 Fig Notch circui t Circuit Descriptio NBX7I91- 851 BX719Transmitter 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 MT output 8255 IC2 port A7 Reset output 7800 port B7RL output 7800 port A6 BZ Buzzer output 7800 port A7BCD DEC Band information 7800 PBo 3, B3B2B1B oVCO SW VCO Fig Band information generation circuitExpand function Fig Mode control circuit~ t Control unit X53-1450Conditio n Operation procedureBZ OFF TES TSW Monitor Display changes by Test numbe r SN74LS138H Control unit IC51 TOP View ResetRese T SE T DAT a Clock Data MB4052 Pin Descriptio n Signal Pin Function sAD C CLKSN74LSI38 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 Fuse 20AACCESSNR Y Warranty CardDC Power Cord ASS Y Wire with Conneltnr40HFR MAfN Pnnh Ref . No AddressParts No Description Desti RP. * -g NationSwitch Unit PIN Connectnr Cerom C CeramicCC45RHIH330J Ceramic Ceram ICCE04IAIHO Elec .1RO ElectrCE04W Odium Elec CRO CE04WIH010M ElectroNatio n Address New Parts No Descriptio n DestiElec -FRO OUF Cnnnect I NG WireCC45CF-II.HO50C Ceramic Ceramic OoopfDesti- 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 Prone R5 ScrewPUL LEY RAN Hfad Machine SCR K W004`-,0111-1220 CC45CHI.F-IOR5C Ceramic CiooCeramic 6BPF Ceramic 1OPF0107 Oscillating LOILVCO395MH7 Small Fixed Inducto RL40EIOII-13 Small Fixed Inducto R Small Fjxed Inducto RDesti Re nation marks CST Relay LOUTrmming POT 50V Protectio N Mimng POICeramic Hinf Elellrn 47LIFEleltpn Ooiuf112 AT Unit TS-440S G5 a It ,4-$ CK45FIIJ223Z Ceramic Ceramic OioufCK45FIH223Z Ceramic CC45SLIHO50C CeramicCE04W H4RIM CO92M1H1O3KCE04WIH010M CE04W1HR47MSig 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 Mode a M Power on DC V .MRF Gain MAX Mode USB Stby REC Mode USBUnit Adjustmen T 5612 AN T VR6 Mode F MDI P ANTStby SEN D Function SW a Power SW OFFMode SW Mode USBTOP View ITP8I TP11I ITP1 TP3TP4I Adjustment 44 FM MV AF 25mV 4.9mVAF Output 0 .68V/811 Input DBuTIF DRV If UnitMIC MI C RF UNI T=KO= Power SW on Power SW of FPS-50 AF Power Cord Warranty AP BAL Power for D AC Power ORDNot Wire HAN DPower Ironsinrmer Power Cord PushingFL---PROOF RS RS14GB3A01DJRI1 JZF1OD220V Version 240V Version Schematic Diagramipc Boar DRS14GB3D4R7J Specificationsiparts LIS TSLP144B IC N IC N IC CE04W1HR22MCS15E1EO10M CS15E1VOR1M MN6401TRALanguag 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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Manual 4 pages 53.32 Kb

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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