TS-4405

s

ADJUSTMEN T

• RX ADJUSTMENT

 

 

 

Measurement

 

Adjustment

Item

 

Condition

Test

 

 

 

 

 

 

 

 

equipment

Unit

Terminal

Unit

Part

Method

1 IF AM P

FREQ

14 .1750MH z

SS G

Rea r

AN T

RF

T4,5, 3

MAX

(common)

MODE

US B

AF V . M

Panel

EXT .SP

 

 

 

 

RF GAIN Control MA X

Oscilloscope

 

 

 

--------- -

 

 

Use the minimum SSG inpu t

AF dummy -

 

 

 

T7,8,1 5

Repeat 2–3 times

 

possible during alignment .

load (8S2)

 

 

 

9, 12 ,

in case of T4,5,3,12 ,

 

 

 

 

 

 

 

10,11

10,11

2 . 2nd MI X

FREQ . 14 .1750MH z

SS G

 

 

RF

VR2

MAX AF Noise level .

balance

MODE

US B

AF V . M

 

 

 

 

 

 

Connect the SSG to ANT terminal .

Oscilloscope

 

 

 

 

 

3 . 1st MI X

FREQ

100 .0 (100kHz )

 

 

 

RF

VR1

MIN AF noise level .

balance

MODE

USB

 

 

 

 

 

 

4 . IF TRAP

FREQ

29MHz Band

 

 

 

RF

T i

Internal spurius bea t

 

SSG

45 .05MH z

 

 

 

 

TC1

MIN .

 

OUT

80 dB!,

 

 

 

 

 

 

5 RX DE T

1) FREQ

14 .1750 MH z

RF V M

IF

0 9

IF

TC1

MI N

Balance

MODE

US B

o r

 

(emitter )

 

 

 

 

RF GAIN . MI N

Oscilloscope

 

(R77)

 

 

 

 

IF SHIFT : CENTE R

 

 

 

 

 

 

 

RF GAIN . MAX afte r

 

 

 

 

 

 

 

 

 

adjustment

 

 

 

 

 

 

6 . IF AM P

FREQ

14 .1750MH z

SS G

Rea r

 

IF

L1,2, 3

MAX AF outpu t

(SSB)

SSG

14 .1760 MH z

AF V . M

panel

 

 

4,18,5

Use the minimu m

 

OUT

0 dB µ

Oscilloscope

 

 

 

 

SSG input possibl e

 

MODE

USB

 

 

 

 

 

during alignment .

7 IF AM P

FREQ

14 .1750MH z

IF

L6

MAX AF outpu t

(FM)

SSG

14 .1750 MH z

 

 

 

 

MOD

'I kHz, DEV : 3kH z

 

 

 

OUTPUT :30dB µ

MODE : FM

Specification/Remark s

S/N 10 dB or more at – 6d B input . 1V or more/8S2 a t AF GAIN control MAX .

Repeat 2–3 times 70dB or mor e

8 . S-METE R

FREQ . 29 .0000MH z

 

 

ANT

IF

VR3

Full scale

60

30dB±10d B

(FM)

MODE

F M

 

 

 

 

 

 

 

/d B

 

 

SSG

MOD OF F

 

 

 

 

 

 

 

/

 

 

OUTPUT :30dBµ

 

 

 

 

 

 

 

 

 

9 . S-METE R

1) No signa l

 

S-meter

 

 

IF

VR2

Set to starting point .

 

 

(SSBI

(SSG output : OFF)

 

 

 

 

 

(. Meter zero )

 

 

 

2) FREQ

14 .1750 MH z

SS G

Rear

ANT

IF

L3

S 1

 

 

 

MODE

US B

 

S-meter

panel

 

 

 

Adjust counter clock -

 

 

 

SSG output

8dBµ

 

 

 

 

 

wise from peak .

 

 

 

 

 

 

 

 

 

 

 

 

(turn slug out )

 

 

 

3) SSG output

40dbµ

 

 

 

 

VR3

S9

40dB±6d B

 

10 . Squelc h

1) MODE

C W

 

Speaker

 

EXT .

IF

VR4

Adjust VR slowly an d

12 o'cloc k

 

threshold

SELECTIVITY

WID E

 

 

SP

 

 

stop at threshold .

 

 

 

SQL control

12 o'clock

 

 

 

 

 

 

 

 

11 . Nois e

1) FREQ

14 .1750 MH z

SS G

Rea r

AN T

R F

T26

MI N

 

 

Blanker

NB SW

O N

 

DC V . M

panel

EX T

R14 6

27

 

 

 

 

SSG output

14 .175MH z

Oscilloscope

 

SP

(10kS2)

 

 

 

 

 

First adjust 20dB input, the n

 

 

 

 

 

 

 

 

 

use the minimum input a s

 

 

 

 

 

 

 

 

 

possible .

 

 

 

 

 

 

 

 

 

 

21

Noise Gen . Low level

12 . Beeper

1)

AF GAIN Control : 12 o'clock

 

 

Depressing IA =Bland AM key at

the same tim e

2)POWER SW O N

3)Set to MEMORY CH17 whe n turning VFO .

Noise Geri .

 

 

T2 6

MIN noise leve l

 

SP

 

 

27

 

 

AF V .M

EXT .

IF

VRIO

120mV/88

±10m V

Oscilloscope

S P

 

 

 

 

AF dummy

 

 

 

 

 

load

 

 

 

 

 

93

Page 93
Image 93
Kenwood MB-430, PS-50, SP-430, PS-430, AT-440, VS-1, YK-88SN, YK-88CN specifications Adjustmen T

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.