An Icom IC736 to PC Interface

Andy Summers, G4KNO.

Main Board Bill of Materials

Part

Value

Type

Quantity

Notes

Resistors

       

R22

1R

0.25W Metal Film

1

 

R20

10R

0.25W Metal Film

1

 

R23

56R

0.25W Metal Film

1

 

R8

100R

0.25W Metal Film

1

 

R21

120R

0.25W Metal Film

1

 

R11, R12, R13, R14, R15, R16

560R

0.25W Metal Film

6

 

R2, R7

1k

0.25W Metal Film

2

 

R9, R10

3k3

0.25W Metal Film

2

 

R4

6k8

0.25W Metal Film

1

 

R17, R18, R19, R20

10k

0.25W Metal Film

4

 

R3

33k

0.25W Metal Film

1

 

R1, R5, R6

47k

0.25W Metal Film

3

 

Capacitors

       

C17

220p

Polystyrene

1

 

C2, C3, C9, C11, C12, C16

100n

Ceramic

6

 

C10

220n

Polyester Film

1

 

C13, C14, C15

470n

Ceramic

3

 

C4

10u/16V

Tantalum

1

 

C6, C8

47u/10V

Tantalum

2

 

C1, C5, C7

100u/10V

Tantalum

3

 

Semiconductors

       

D1, D2, D3, D4, D5, D6

1N4148

 

6

 

D7, D8

1N4001

 

2

 

Q1, Q2, Q3

2N3904

 

3

 

Q4, Q5

2N3906

 

2

 

IC1

78LO5

 

1

 

IC2

TBA820M

 

1

 

IC3

MAX3232CPE

 

1

 

IC4, IC5, IC6, IC7, IC8

SFH618-2

 

5

 

Miscellaneous

       

RL1

BT53W/1

DPDT/4.5V coil

1

Maplin order code: DC34M

T1, T2

OEP1200

1:1 600R

2

Farnell order code: 177-497

JP1, JP2

2-pin jumper

 

2

 

SL2, SL3, SL8, SL9

2-pin

straight polarised header

4

Maplin order code: RK65V

SL4, SL7, SL10, SL11

3-pin

straight polarised header

4

Maplin order code: BX96E

SL5

5-pin

straight polarised header

1

Maplin order code: FY93B

SL1, SL6

8-pin

straight polarised header

2

Maplin order code: YW13P

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