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Page 18

RF Technology   PA220

C52

Cap 1N0 5% 63V NPO SM1206

46/3300/01N0

C53

Cap 100N 10% 63V X7R SM1206

46/3310/100N

C54

Cap 100N 10% 63V X7R SM1206

46/3310/100N

C4

Cap 1N0 5% 63V NPO SM1206

46/3300/01N0

C56

Cap 56pF 5% 250V Mica

48/3002/056P

C57

Cap 220pF 20% 100V SM1008

46/3100/220P

C58

Cap trim 2-18pF Hi temp

49/3001/018P

C59

Cap trim 2-18pF Hi temp

49/3001/018P

C6

Cap 56pF 5% 250V Mica

48/3002/056P

C18

Cap 56pF 5% 250V Mica

48/3002/056P

C101

Cap 47pF 5% 250V Mica

48/3002/047P

C103

Cap 47pF 5% 250V Mica

48/3002/047P

C111

Cap 47pF 5% 250V Mica

48/3002/047P

C113

Cap 47pF 5% 250V Mica

48/3002/047P

C7

Cap 47pF 5% 250V Mica

48/3002/047P

C104

Cap trim 6-100pFHi temp

49/3003/100P

C9

Cap 220pF 20% 100V SM1008

46/3100/220P

CX1

70 OHM SR COAX

12/0021/0105

CX2

70 OHM SR COAX

12/0021/0105

CX3

70 OHM SR COAX

12/0021/0105

CX4

70 OHM SR COAX

12/0021/0105

D1

Diode BAT17 SOT-23

21/3030/0017

D2

Diode BAT17 SOT-23

21/3030/0017

D5

Diode 1N4148

21/1010/4148

L1

Inductor 1uH Axial

37/2021/001U

L10

6 HOLE CHOKE

37/1021/0001

L11

Inductor 1uH 10% SM1008

37/3320/01U0

L12

2.5T

37/2635/0002

L13

2.5T

37/2635/0002

L14

2.5T

37/2635/0002

L2

COILCRAFT 132-7

37/2021/0007

L3

COILCRAFT 132-7

37/2021/0007

L4

FERRITE BEAD

37/1022/0001

L5

6 HOLE CHOKE

37/1021/0001

L6

Inductor 1uH Axial

37/2021/001U

L7

COILCRAFT 132-7

37/2021/0007

L8

COILCRAFT 132-7

37/2021/0007

L9

FERRITE BEAD

37/1022/0001

P1

6.35 QC TAB

35/0635/0001

P2

2.8 QC TAB

35/0028/0001

P3

6.35 QC TAB

35/0635/0001

P4

16 WAY SHROUDED DEADER

35/2502/0016

Q1

Transistor RF Power MRF650

27/3020/MRF650

Q2

Transistor RF Power MRF650

27/3020/MRF650

Q3

Transistor NPN 2N3904 T0-92

27/2020/3904

Q4

Transistor PNP 2N3906 T0-92

27/2020/3906

Q5

Transistor NPN 2N3904 T0-92

27/2020/3904

R10

Resistor 100 Ohm non inductive

51/RF40/0100

R11

Resistor 220R 5% .25W SM1206

51/3380/0220

R12

Resistor 220R 5% .25W SM1206

51/3380/0220

R13

Resistor 220R 5% .25W SM1206

51/3380/0220

R14

Resistor 220R 5% .25W SM1206

51/3380/0220

R15

Resistor 47K 5% .25W Axial

51/1040/047K

R16

Resistor 100K 5% .25W Axial

51/1040/100K

R17

Resistor 1K 5% .25W Axial

51/1040/01K0

R18

Resistor 47K 5% .25W Axial

51/1040/047K

R19

Resistor 100K 5% .25W Axial

51/1040/100K

R20

Resistor 1K 5% .25W Axial

51/1040/01K0

R21

Resistor 100R 5% .25W Axial

51/1040/0100

Summary of Contents for Eclipse PA220

Page 1: ...chnology rfinfo rftechnology com au November 2001 PA220 Amplifier Operation and Maintenance Manual This manual is produced by RF Technology Pty Ltd 10 8 Leighton Place Hornsby 2077 Australia Copyright...

Page 2: ...icator 8 2 7 Over Temperature Protection 8 3 Field Alignment Procedures 8 3 1 Output Power Level 8 3 2 Tuning Procedure 9 4 Specifications 9 4 1 Description 9 4 2 Physical Configuration 10 4 3 Front P...

Page 3: ...RF Technology PA220 Page 3 CONTENTS CONTENTS A Engineering Diagrams 12 A 1 Block Diagram 12 A 2 Circuit Diagrams 12 A 3 Component Overlay Diagrams 12 B Parts List 17 B 1 PA220 05 9105 0220 17...

Page 4: ...rack typically 20 Amperes for a 100W transmitter amplifier Owing to the current drain power supply lines should be cabled to the power amplifier separately and using heavy gauge wire to minimise volt...

Page 5: ...ensing authority Failure to do so may result in penalties being imposed by the licensing authority Output Power The output power is set by RV2 This is nominally set to 100 Watts 50dBm but may be set t...

Page 6: ...line low will reduce output power Voltages below 0 5V will reduce the output by more than 20dB A pull down current of approximately 1mA is required 2 Circuit Description The following descriptions sho...

Page 7: ...ors is proportional to the forward and reflected voltage components 2 4 Low Pass Filter A low pass filter consisting of L12 14 and C39 42 reduces the harmonic components to less than 80dBc The filter...

Page 8: ...90 Celcius the resistance of RT1 increases and Q5 is turned ON This causes the TEMP LED to come on and also reduces the dc reference voltage to the output power error amplifier U1d The input power wi...

Page 9: ...e RF output power adjust C10 C24 C102 C112 C58 C59 C104 and C114 to obtain maximum output 4 Measuring the collector currents of Q1 and Q2 at the test socket adjust C58 and C59 to reduce and balance th...

Page 10: ...4 3 Front Panel Indicators and Test Points 4 3 1 Indicators Power Green LED RF Power Yellow LED Over Temperature Red LED 4 3 2 Test Points Forward Power Voltage to ground 0 4V uncalibrated pin 4 gnd...

Page 11: ...output for air temperature below 40C Derate linearly above 40C to 5 at 70C 4 7 Spurious and Harmonics Less than 1uW at any harmonic of the transmit frequency 4 8 Heatsink Temperature The heatsink temp...

Page 12: ...iven in table 1 4 10 4 9 Pin Connector A front panel 9 pin D shell connector provides analogue voltages for testing purposes A Engineering Diagrams A 1 Block Diagram Figure 1 shows the block signal fl...

Page 13: ...RF Technology PA220 Page 13 A ENGINEERING DIAGRAMS A 1 wiring and block diagrams Figure 1 The block circuit diagram of the PA220 Amplifier...

Page 14: ...Page 14 RF Technology PA220 A 1 Wiring and block Diagrams A ENGINEERING DIAGRAMS Figure 2 The chassis wiring diagram of the PA220 Amplifier...

Page 15: ...RF Technology PA220 Page 15 A ENGINEERING DIAGRAMS A 2 Circuit Diagrams Figure 4 The component circuit diagram of the power amplifier...

Page 16: ...Page 16 RF Technology PA220 A ENGINEERING DIAGRAMS A 3 Component Overlay Diagrams Figure 5 The component overlay diagram of the PA220 amplifier...

Page 17: ...20 25V 41 2225 06U8 C29 Cap 10pF 5 63V NPO SM1206 46 3300 010P C22 Cap 10pF 5 250V Mica 48 3002 010P C30 Cap 10pF 5 63V NPO SM1206 46 3300 010P C31 Cap 100pF 5 63V NPO SM1206 46 3300 100P C32 Cap 100p...

Page 18: ...uctor 1uH 10 SM1008 37 3320 01U0 L12 2 5T 37 2635 0002 L13 2 5T 37 2635 0002 L14 2 5T 37 2635 0002 L2 COILCRAFT 132 7 37 2021 0007 L3 COILCRAFT 132 7 37 2021 0007 L4 FERRITE BEAD 37 1022 0001 L5 6 HOL...

Page 19: ...33K R41 Resistor 100R 5 25W Axial 51 1040 0100 R7 Resistor 10R 5 25W Axial 51 1040 0010 R8 Resistor 10R 5 25W Axial 51 1040 0010 R9 Resistor 100 Ohm non inductive 51 RF40 0100 RT1 THERMISTOR 54 0400 0...

Page 20: ...C 6 35 F Crimp 35 1635 0001 End of assembly Bottom Power amp 80 9127 0001 Top Power amp 80 9126 0001 Rear panel Power amp 80 9125 0001 Front sub panel Power amp 80 9128 0001 Front panel Power amp 80 9...

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