TS-4405

ADJUSTMENT

• VOLTAGE CHECK, ADJUSTMEN T

 

 

 

Measurement

 

 

 

Adjustmen t

 

 

Item

 

Condition

Tes t

 

 

 

Unit

 

 

Specification/Remark s

 

 

 

equipment

Unit

' Terminal

Part

Method

 

1 . Voltage

1) POWER : ON

DC V .M

IF

19

-5

 

 

Check

13 .3-

14.3V

 

RF GAIN : MAX

 

 

19

-9

 

 

 

4 .5-5

.5 V

 

MODE

USB

 

 

19

-10

 

 

 

7 .2-8

.2 V

 

STBY

REC

 

 

9

-1

SW " A "

VR-4

2 .6V

+0 .05V, -OV

 

 

 

 

 

27- 4

IF

VR-5

8 .8V

 

 

• COMMON ADJUSTMEN T

 

 

Measurement

 

 

Adjustmen t

 

Item

Condition

Test

Unit

 

Unit

 

 

 

Specification/Remarks

 

 

equipment

Terminal

Part

 

Method

 

1 . CAR

MODE : USB

Oscilloscope

IF

14- 2

IF

L15

0

.4V/p-p

f0 .05V/p- p

 

 

Freq .counter

 

 

 

TC2

8

.3750MHz

±50H z

• PLL ADJUSTMENT

 

 

 

Measurement

 

Adjustmen t

 

Item

 

Condition

Tes t

 

 

 

 

 

Specification/Remark s

 

 

 

equipment

Unit

Terminal

Unit

Part

Method

 

1 . Referenc e

 

 

 

 

 

 

 

 

 

oscillato r

 

 

 

 

 

 

 

 

 

frequency

36MHz

 

Freq . counter PLL

TP6

PLL

TC1

36 .000,000MHz

± 10H z

 

 

 

 

 

(R96 )

 

 

 

 

2 . RIT

1) FREQ

14.000OMHz

DISPLAY

 

 

SW " A" VR3

14 .000,00 RIT .0 . 0

 

 

MODE A M

 

 

 

 

 

 

 

 

RIT Pot

: CENTE R

 

 

 

 

I

 

 

 

RIT SW : ON

 

 

 

 

 

 

 

 

2) RIT Pot . : FULL CW (+)

 

 

 

 

 

14 .00120 RIT1 .2 or more

 

RIT Pot . : FULL CCW

-I

 

 

 

 

 

13 .998 .80 RIT- 1 .2 or mor e

3 VCO5

 

 

DC V .M

PLL

TR11

PLL

T20

5 .OV

±0 .2 V

 

 

 

 

 

(R146 )

 

 

 

 

4 . VC04

1) FREQ . 14 .0000MHz

DC V .M

PLL

TP 1

 

 

 

 

 

MODE A M

 

 

(L2)

PLL

Ti

3 .8V

±0 .1 V

 

Disconnect PLL- 6 connecto r

 

 

 

 

 

 

 

when PLL unlocked .

 

 

 

 

 

 

 

 

2) MODE

USB

 

 

 

 

 

 

4 .2-4 .6 V

 

3) MODE

LSB

 

 

 

 

 

 

3 .2-3 .6 V

 

4) MODE

US B

Freq, counter PLL

3 -2

SW"A"

VR7

456.875kHz

t 1

 

IF SHIFT Pot . : CENTER

 

 

 

 

 

 

 

5) IF SHIFT Pot. FULL CW

 

 

 

 

 

457 .875kHz or more

 

61 IF SHIFT Pot . : FULL CCW

 

 

 

 

 

455 .875kHz or les s

 

7) IF SHIFT Pot. : CENTER

 

 

 

 

456.875kHz

456 .874--456 .876kH z

5 . VCO3

1) FREQ

13 .9999MH Z

 

 

 

 

 

 

 

 

MODE : AM

DC V .M

PLL

TP2

PLL

T2

6 .2V

±0 . W

 

 

 

 

 

(L13 )

 

 

 

 

 

21 FREQ

14 .0000MH z

 

 

 

 

 

 

 

 

MODE A M

 

 

 

 

 

 

 

6 . PLL 6 .6MHz

1) FREQ : 14 .0050MHz

Oscilloscope

PLL

TP3

PLL

T3-5

MAX

Ref . 0 .2V/p-p

BPF

MODE AM

 

 

(R60 )

 

 

 

 

9 1

Page 91
Image 91
Kenwood SP-430 Power on DC V .M, RF Gain MAX Mode USB Stby REC, TC2, TP6 PLL TC1, Freq, Display, Mode a M PLL, SWA VR7

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.