Kenwood PS-430 RL output 7800 port A6, BZ Buzzer output 7800 port A7, Reset output 7800 port B7

Page 22

TS-440S

CIRCUIT DESCRIPTIO N

PES ,uPD7800

10 . PLL output bloc k

The PLL output block controls five PLL loops . The 500 kHz step PLL loop uses an MB87006 and the other PLL loops us e MN6147s .

The M387006 has two dividers : one for the PLL referenc e frequency and the other for a swallow type counter . Frequen - cy division data for the reference frequency is sent only on e when the TS-440 power is switched on .

Fig . 18 Reset circuit

The MN6147 uses the PLL data format shown figure 19 .

8255( IC )

Por t

B4n,B 7

BOr B3 Address

Fig . 19 MN6147 PLL data

Since the MN6147 has latches as shown in Figure 20, onl y data following a change is output . GO data can be any dat a since it is used to transfer G2 and G7 data to the G8 latch .

11. Other output s

RL output (7800 port A6 )

This output signal controls transmission . When transmitting , this signal is "H" .

BZ (Buzzer) output (7800 port A7 )

This output signal makes the BZ circuit active . When this sig - nal is "H", the oscillator circuit operates .

RESET output (7800 port B7 )

This output signal resets the two 8255s and 8251 (option) . SBK output (8255 (IC2) port A6 )

This output signal switches the RF unit to prevent noise du e to PLL siwtching .

MT output (8255 (IC2) port A7 )

This output signal controls the AF output to prevent nois e due to PLL siwtching .

SCH output (8255 (IC2) port CO )

This signal controls the sub audible tone encoder . The sub - tone is activated whenever a transmit frequency in M-C H 90-99 has been selected, in the FM mode . A logic H acti- vates the encoder .

 

coo x+100

xi0

xi

xi -

 

le©©II~11 IINI

m®®m®mlllImm AEI2 3

 

111111111111111111111 1

CP L

MIm G3

G4

G B

G G

GS

 

 

 

 

DA 3

DA 2

DA I.__ .-~i DA 0

MN 614 7

Fig . 20 Data input terminal and programmable counte r

SW No .

Hz

125

250

3

100

LS B

4

200

 

5400

62 5

750

8100USB

9200

10400

12. CAR compensation DIP switch

This switch is used to compensate the absolute frequenc y characteristic of the 455 kHz filter . The characteristic ca n be compensated within the range of — 400 Hz to + 375 Hz . LSB and USB can be compensated separately . When LSB i s compensated, FSK is also compensated .

Table 1 2

When all bits are off, -400 Hz is supplied for compensa- tion . When no compensation is required, bits 5 and 10 mus t be on .

22

Image 22
Contents KEN Wood Semiconductors Dimensions TS-440SFrequency accuracy RIT/XIT OFF SensitivityImage ratio If rejection Selectivity Frequency stabilityFig Frequency configuratio n Circuit Descriptio N IpllAM, FM Fig Receiver circuit configuratio nUSB, LSB, FS K Displayed frequencie sCircuit Description Fig Selectivity control circuitMCF L71-0259-05 RF Unit Fl Filter selectiveCeramic filter L72-0355-05 if Unit CF2 BX719 Circuit Descriptio NBX7I91- 851 D27 D2 Fig Notch circui tTransmitter Circuit Descriptio n TS-440$ SWR protection circuit Fig Antenna tuner circuitSWR automatic arithmetic circuit Fig -1 FULL/SEMI BREAK-IN block diagra m Fig -2 FULL/SEMI BREAK-IN timing chartControlsemi Fig -3 FULL/SEMI BREAK-IN timing char t Circuit DescriptionFig Standby keying timing char t Circuit Descriptio N Fig PLL circuit block diagra m PLL4 PLL3Circuit Descriptio N Unloc kCircuit Description Fig Control circuit block diagra mFig Encoder waveform timing chart Fig Encoder circui tFig Digital circuit Key scan matrixFig A/D convertor circui t %--- 1 9 LRIT If Shift BZ Buzzer output 7800 port A7 Reset output 7800 port B7RL output 7800 port A6 MT output 8255 IC2 port A7Fig Band information generation circuit Band information 7800 PBo 3, B3B2B1B oVCO SW VCO BCD DECControl unit X53-1450 Fig Mode control circuit~ t Expand functionTES T Operation procedureBZ OFF Conditio nSW Monitor Display changes by Test numbe r SN74LS138H Control unit IC51 Rese T SE T DAT a Clock ResetTOP View CLK MB4052 Pin Descriptio n Signal Pin Function sAD C DataBPD SN74LSI38Semiconducto R Pin connectio n Semiconducto RNF B TPD8255AC-5 Control unit IC2 Semiconducto R SCKParts List Chip capacitorsM2 General Marke T For U .S .AFor Europ e For Australi a Wire with Conneltnr Warranty CardDC Power Cord ASS Y Fuse 20AACCESSNR YRP. * -g Nation Ref . No AddressParts No Description Desti 40HFR MAfN PnnhSwitch Unit PIN Connectnr Ceram IC CeramicCC45RHIH330J Ceramic Cerom CCE04WIH010M Electro ElectrCE04W Odium Elec CRO CE04IAIHO Elec .1ROAddress New Parts No Descriptio n Desti Natio nCeramic Ooopf Cnnnect I NG WireCC45CF-II.HO50C Ceramic Elec -FRO OUFAddress New Parts No Description Desti- Re nation mark sAddress New Parts No IR .g Desti NationParts No Descriptio n Ref . NoDesti Re nation mark s New Parts Ceramic 56OPFCK45FIH223Z Ceramic RAN Hfad Machine SCR K W ScrewPUL LEY Prone R5004`-,0111-1220 Ceramic 1OPF CiooCeramic 6BPF CC45CHI.F-IOR5C Ceramic0107 Small Fjxed Inducto R Small Fixed Inducto RL40EIOII-13 Small Fixed Inducto R Oscillating LOILVCO395MH7Desti Re nation marks CST Mimng POI LOUTrmming POT 50V Protectio N RelayOoiuf Elellrn 47LIFEleltpn Ceramic Hinf112 AT Unit TS-440S G5 a It ,4-$ CC45SLIHO50C Ceramic Ceramic OioufCK45FIH223Z Ceramic CK45FIIJ223Z CeramicCE04W1HR47M CO92M1H1O3KCE04WIH010M CE04W H4RIMSig 1F F TS-440$ DTC114ES Digital Transistor PC Board TS-440S BDF016 C36 NilYPW M Tl .I J PLL Unit Page Page Page Page Page Page Page Page Disassembly Disassembly Sems55x2 OcDC o TS-440E/8 000- N TS-440S Packing Adjustmen T RECSpectrum Analyzer SPE-ANA AdjustmentJapanese SG American SG 25µ Detector Mode USB Power on DC V .MRF Gain MAX Mode USB Stby REC Mode a MUnit Adjustmen T 5612 ANT Mode F MDI P AN T VR6Stby SEN D Mode USB Power SW OFFMode SW Function SW aTOP View TP4I TP3ITP8I TP11I ITP1 Adjustment Input DBu MV AF 25mV 4.9mVAF Output 0 .68V/811 44 FMRF UNI T If UnitMIC MI C TIF DRV=KO= Power SW of F Power SW onPS-50 AC Power ORD Warranty AP BAL Power for D AF Power CordPower Cord Pushing Wire HAN DPower Ironsinrmer NotJZF1OD RS14GB3A01DJRI1 FL---PROOF RSSchematic Diagramipc Boar D 220V Version 240V VersionSLP144B Specificationsiparts LIS TRS14GB3D4R7J MN6401TRA CE04W1HR22MCS15E1EO10M CS15E1VOR1M IC N IC N ICSchematic Diagram Languag E SelectPage Weight MB-430/SP-430YK-88S/SN,YK-88C/C N Ratin gCommunications & Test Equipment Grou P Incorporated in N .S
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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.