ozQRP MST400, Construction Manual

MST Construction Manual – Issue 1 

Page 3 

List of Figures 

Figure 1 MST Block diagram ........................................................................................................................................ 5

Figure 2 SSB generator ................................................................................................................................................... 9

Figure 3 Transmit mixer ............................................................................................................................................. 10

Figure 4 Power amplifier............................................................................................................................................ 11

Figure 5 Receive mixer ................................................................................................................................................ 12

Figure 6 Receive audio ................................................................................................................................................ 13

Figure 7 Component overlay .................................................................................................................................... 22

Figure 8 Front panel drilling guide ........................................................................................................................ 25

Figure 9 DDS VFO front panel mounting ............................................................................................................. 26

Figure 10 Wiring diagram .......................................................................................................................................... 28

Figure 11 Typical circuit voltages. .......................................................................................................................... 31

Figure 12 Crystal filter response ............................................................................................................................. 32