G4DDK2001
An update



comp side



2001top
This picture shows an 'F' filter  (F1) fitted. The 'A' filters (F2) fit nearer to the SMA connector


2001_V22


2001 fitted with alternative parts from the kit. Different trimmers and voltage regulator



schematic5
  Schematic of the DDK2001


Kit info
The DDK2001 source can be supplied as a kit for the frequencies shown at the top of this page. I do NOT supply crystals, but everything else is included in the kit. Some parts supplied in the kits may be slightly different to those shown in the table below. This has enabled me to keep the kit price down to £42.00
 Postage is extra.
The type of trimmer supplied for C13, 14, 28 and 29 may not be as shown. The colour, but not value, of C5 and C10 has also changed and will require the small solder tab at each end of the trimmer to be bent back underneath the trimmer in order to allow it to fit onto the solder pads.
IC1 may be supplied as a D2PAK 1A SMD part. It still fits into the space provided, but the tab must now be soldered to the end wall of the box. Many of the other parts are now supplied in 0603 SMD size. This makes the whole source board easier to assemble as there is more space around these parts.

 

Designation

Value

R1, R9,

10R

R2, R6

560R

R3, R4

1k

R5

820R

R7, R8

10k

R10, R14

100R

R11

390R

R12,R15

2.7k

R13, R16

27k

R17

47R

R18

39R

C1,C2,C3,C4,C7,  C31, C32

1nF

C5,C10

4 – 25pF

C6

8.2pF

C8

27pF

C9

10pF

C11

22pF

C12, C18

470pF

C13, C14

3- 10pF

C15, C19

0.5pF

C16

2.7pF

C17, C23

1pF

C24

2.2pF

C20, C25, C27

100pF

C26, C30

100nF

C21, C22

10uF/ 16V

C28, C29

2 – 6pF

L1

100nH

L2

390nH

L3, L4

33nH

L5, L6

18nH

L7

10nH

F1

5HW

Tr1

BSV52

Tr2

BFS17

Tr3, Tr4

BFR92AW

IC1

78M08

X1


Box

37 x 74 x 30mm

Connectors

SMA

Input feedthrough capacitor

1000pF







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This page last updated 10/02/2011