Kenwood MB-430 Sensitivity, Image ratio If rejection Selectivity, Frequency accuracy RIT/XIT OFF

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TS-440S

 

SPECIFICATIONS

 

 

(RECEIVER)

 

 

 

 

Sensitivity :

 

 

 

 

Freq .

100 -- 150kHz

150 500kHz

0 .5 -- 1 .6MHz

1 .6 -- 30MHz

Mode

 

 

 

 

SSB,CW,FS K

Less tha n

Less tha n

Less tha n

Less tha n

(SIN10dB)

2 .5µV (8dBA1

1µV (OdBA)

4µV (12dBA)

0 .25µV (— 12dBA)

AM (SIN 10dB)

Less tha n

Less tha n

Less tha n

Less tha n

25µV (28dBp)

13µV (22dB A)

40/,cV (32dBA)

2 .5µV (8dBA )

 

FM (12dB SINAD)

Squelch sensitivity : (Threshold)

Less tha n

0 .7µV (—3 dBµ )

Image ratio :

IF rejection :

Selectivity :

Mode

•

•

150 -- 500kHz

0 .5 — 1

.6MHz

1 .6 - - 30MHz

 

 

 

 

 

 

SSB,CW,AM,FSK

Less tha n

 

Less tha n

Less tha n

 

Less tha n

20AV (26dBA1

10AV (20dBp)

20µV (26dBA)

2µV (6dBA )

 

FM

Less tha n

0 32AV (— 10d BA )

 

50dB or more (1 00kHz -- 1 6MHz ) 70dB or more (1 .6 — 30MHz ) 50dB or more (FM 3rd image ratio ) 50dB or more (100kHz --- 1 6MHz ) 70dB or more (1 .6MHz -- 30MHz )

Fred

— 6dB

— 60d B

Mode

 

 

SB,CW,FSK

More than 2kHz

Less than 4 .4kHz

AM

More than 4kHz

Less than 18kHz (— 50dB )

FM

More than 1 2kHz

Less than 25kHz (— 50dB)

IF SHIFT variable range : RIT/XIT variable range: Audio output power : Audio output impedanc e

±0 .9kHz or more

± 1 kHz or mor e

1.5W or more (with 8S2 load, 10% distortion )

4 — 1652 (Speaker and headphone )

(FREQUENCY STABILITY)

Frequency accuracy : (RIT/XIT OFF)

More than

±10

x 1 0

- 6

Frequency stability :

More than

±10

x 10

-6 (— 10°C to 50°C )

(RIT/XIT OFF : at receive )

 

 

 

 

Reference oscillator frequency :

36MH z

 

 

 

Note : Circuit and ratings subject to change without notice due to developments in technology .

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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 DescriptionFilter selective MCF L71-0259-05 RF Unit FlCeramic filter L72-0355-05 if Unit CF2 D27 D2 Fig Notch circui t Circuit Descriptio NBX7I91- 851 BX719Transmitter Circuit Descriptio n TS-440$ Fig Antenna tuner circuit SWR protection circuitSWR automatic arithmetic circuit Fig -2 FULL/SEMI BREAK-IN timing chart Fig -1 FULL/SEMI BREAK-IN block diagra mControlsemi Circuit Description Fig -3 FULL/SEMI BREAK-IN timing char tFig Standby keying 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 circuit%--- 1 9 L Fig A/D convertor circui tRIT If Shift 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 Reset Rese T SE T DAT a ClockTOP View Data MB4052 Pin Descriptio n Signal Pin Function sAD C CLKSN74LSI38 BPDSemiconducto R Semiconducto R Pin connectio nNF B TPD8255AC-5 Control unit IC2 SCK Semiconducto RChip capacitors Parts ListFor U .S .A M2 General Marke TFor Europ e For Australi a 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 .gRef . No Parts No Descriptio nDesti Re nation mark s 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-440SNilY 016 C36PW M 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 TAdjustment Spectrum Analyzer SPE-ANAJapanese SG American SG 25µ Detector 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 TP3 TP4IITP8I TP11I ITP1 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 DSpecificationsiparts LIS T SLP144BRS14GB3D4R7J 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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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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