ozQRP CDV, Construction Manual

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CDV Construction Manual – Issue 3 Page 3
List of Figures
Figure 1 Microcontroller and power supply schematic ................................................................................... 8
Figure 2 Si5351A Clock generator schematic ....................................................................................................... 9
Figure 3 Display and controls schematic ............................................................................................................. 10
Figure 4 Component overlay .................................................................................................................................... 12
Figure 5 OLED mounting ............................................................................................................................................ 15
Figure 6 CDV panel cutting ........................................................................................................................................ 17
Figure 7 CDV used in a superhet rig ...................................................................................................................... 25
Figure 8 Add-on board options ................................................................................................................................ 26
Figure 9 Add-on board schematic ........................................................................................................................... 27
Figure 10 Add-on board PCB overlay .................................................................................................................... 27
Figure 11 Attenuator filter board fitted to the CDV ........................................................................................ 30
Change History
Date Issue Comments
30-Jan-2017 1 First release
10-Jan-2020 2 Added BFO fixed output feature. Added user programmable steps.
Improved frequency accuracy. Minor text changes.
1-Oct-2020 3 Rev. B PCB. 2 pin JST connector reversed, alternative 4 pin connector
wire colours.