TS-440S

CIRCUIT DESCRIPTIO N

Filter selective

 

 

 

 

 

 

 

 

 

AUTO MODE

 

 

 

 

MANUAL MODE

 

 

 

 

WITHOUT OPTION

OPTION INSTALLE D

 

WITHOUT OPTION

OPTION INSTALLE D

MODE

8 .83MHz

455kHz

8 .83MHz

455kH z

SELECT

8 .83MHz

455kHz

8 .83MHz

455kH z

SSB

Through

CFI

XF1

CF

1

N

NO RX

 

XF2

CF 1

 

 

 

 

 

 

 

 

 

CW

Through

CF1

XF2

CF

1

M 1

 

 

XF1

CF 1

AM

Through

CF2

Through

CF

2

M2

Through

CFI

Through

CF 1

FSK

Through

CFI

XF2

CF I

W

Through

CF2

Through

CF2

FM

Through

Through

 

 

 

 

 

 

 

XF1: YK-88S or YK-88S N

XF1: YK-88S or YK-88S N

XF2: YK-88C or YK-88C N

 

XF2: YK-88C or YK-88C N

 

Table 2

Item

Ratin g

Table

3

Item

Rating

Center frequency fo Center frequency deviation Pass bandwidth Attenuation bandwidth Ripple

Insertion loss Guaranteed attenuation

45 .05 MH z

fo± 1 kHz at 3 d B

±9 .6 kHz or more at 3 d B

±28 kHz or less at 10 d B

0 .7 dB or les s

2 .0 dB or les s

30 dB or more with ±1 MH z (Except spurious )

Center frequency fo

455 kH z

6 dB bandwidth

±2 kHz or mor e

40 dB bandwidth

7 .5 kHz or les s

Insertion loss

6 dB or les s

Guaranteed attenuatio n

35 dB or more

(within 455kHz ± 100kHz)

 

Input and output impedance

2 .0 al

Final impedance

2 kS1±10 %IL characteristi c

Table 4 MCF (L71-0259-05) (RF UNIT Fl )

Item

 

Ratin g

Center frequency fo

8830 kHz±0 .5 kH z

Pass bandwidth

±3 kHz or more at 3 d B

Attenuation bandwidth

±12 kHz or less at 18 d B

Guaranteed attenuation

30 dB or more within fo± 1

 

MH z

Ripple

0

.5 dB or les s

Insertion loss

1

.0 dB or les s

Final impedance

2

.5 kfll3 pF

Table 5 Ceramic filter (L72-0355-05) (IF UNIT CF2 )

Item

Ratin g

Center frequency fo

455 kHz±1 'kH z

6 dB bandwidth

±6 kHz or mor e

50 dB bandwidth

±12 .5 kHz or les s

Rippl e

3 dB or les s

(within 455 kHz±4 kHz)

 

Insertion loss

6 dB or les s

Guaranteed attenuatio n

35 dB or more

(within 455 kHz± 100kHz)

 

Input and output impedance

2 .0 kS l

Table 6 MCF (L72-0260-05) (RF unit F2 )

Table 7 Ceramic filter (L72-0315-05) (IF unit CF3 )

 

 

Item

Ratin g

 

 

Center frequency fo

455 kHz±0 .2 kHz at 6 d B

 

 

6 dB bandwidth (total)

± 1 .1 -1 .3 kH z

Item

Rating

60 dB bandwidth

4 .5 kHz or les s

Center frequency fo

8 830 MH z

Guaranteed attenuation

60 dB or mor e

Attenuation bandwidth

±50 kHz or more at 3 d B

 

(at 0 .1 -1 MI-Iz )

Guaranteed attenuation

35 dB or more at 9 285 MH z

 

 

Spurious (600—700 kHz)

40 dB or mor e

 

45 dB or more at 9 .74 MH z

Ripple with bandwidth

2 dB or less at 60 d B

Insertion loss

6 dB or les s

Insertion loss

2 dB or les s

Ripple

1 .0 dB or les s

Temperature

— 10°C— +50° C

Input and output impedance

330 Sl

Input and output impedance

2 al

Max voltage (DC)

50 V (Min l

Table 8 Ceramic filter (L72-0356-05) (IF UNIT CF1)

Table 9 Ceramic filter (L72-0351-05) (IF unit CF4 )

8

Page 8
Image 8
Kenwood YK-88SN, PS-50, SP-430, PS-430 Filter selective, MCF L71-0259-05 RF Unit Fl, Ceramic filter L72-0355-05 if Unit CF2

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.