Kenwood K2E Manual Do Utilizador

TH-K2AT/K2E/K2ET

15

98

DCDET

I

DC IN detection interrupt input (↓)
                                      L:DC IN connected

99

RXLED

O

Busy LED output

H:ON

100

BSFT

O

Beat shift swiching output

H:ON

101

PLLEN

O

Serial enable output to PLL IC

102

PLLLD

I

Lock detection input from PLL IC H: Lock

103

KIN0

I

Key matrix input 0

104

KIN1

I

Key matrix input 1

105

KIN2

I

Key matrix input 2

106

KIN3

I

Key matrix input 3

107

KIN4

I

Key matrix input 4

108

TYPE

I

Market code bit input

109

VUKEY

I

Detection of 4 key or 16 key

110

MICM

O

Microphone mute switch

H:Mute

111

NOAA

I

1050Hz tone detection input

112

5R

O

RX power supply switch

L:ON

113

SHIFT

O

VCO shift switch

L:TX, H:RX

114

5T

O

TX power supply switch

L:ON

115

KOUT0

O

Key matrix output 0

116

KOUT1

O

Key matrix output 1

117

KOUT2

O

Key matrix output 2

118

KOUT3

O

Key matrix output 3

119

VSS

-

GND

120

BTDET

O

Battery detection switch

L:ON

IC1

PLL IC

IC2

APC differential

amplifier

IC3

FM IC

IC4

11.5V AVR

IC5

HPF

Active filter

IC6

AF amplifier

IC8

MPU

IC9

5.0V AVR

IC10

4.4V voltage

MPU INT voltage detection

detection

IC11

3.3V voltage

MPU Reset voltage detection

detection

IC12

5.0V AVR

IC15

EEPROM

IC16

MIC amplifier Limiter, splatter filter

IC17

CTCSS/DCS/WX

Active filter

filter

Q1

VCO

Q2

RF amplifier

Q3

VCO shift

On RX

control switch

Q4

Ripple filter

Q5,6,9

RF amplifier

Q10,11

Drive amplifier

Q12

Power amplifier

Q13

APC circuit

On TX

operation switch

Q14

APC output

On TX

switch

Q15

Q10 operation

On TX

switch

Q16

1st mixer

Q17

RX 1st amplifier

Q20

Audio mute

Audio mute when off

switch

Q21

Audio filter

Active filter

Q22

Wide/narrow

On when wide is selected

changeover switch

Q23

Tripler

2nd local

Q24

IF amplifier

1st IF 38.85MHz

Q27

Wide/narrow

On when wide is selected

changeover switch

Q29

MIC mute

Mutes when ON

switch

Q30

VOX detection

amplifier

Q31

Q56 operation

Off when the speaker outputs audio

switch

Q33

Charge switch