Texas Star Skeleton 220
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Skeleton 220

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All Skeleton's are very similar. Over the years the transistors changed from SRF2072 to MRF455 to 2sc2290. Maybe a few had SRF2727, (Note: SRFxxxx number from Motorola.) Along with transistors was the relays. At one time Texas Star used two relays, both were SPDT type. And of course, the input transformer turns on the primary changed with the transistors. The output was near equal until Texas Star used the 2290's. Then they called it the Skeleton 220. The model # was the peak power expected with 12 watts PEP SSB input. There where some Skeleton 150's that had 2sc2290's until they ran out of 150 nameplates. Then they started with the Skeleton 220.

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MODIFICATIONS
    CW Transmitter To AMP Conversion  
DIAGRAMS

    
Skeleton 220 Schematic Diagram (Early Version) (8.5x11)
    
Skeleton 220 Schematic Diagram (Later Version) (8.5x11)

    
Skeleton 220 Schematic Diagram (Early Version)
    
Skeleton 220 Schematic Diagram (Later Version)
Layouts and Parts


     
Skeleton 220 Inter-Connection Diagram and PCB Layouts (Early Version) (8.5x11)
     
Skeleton 220 Inter-Connection Diagram and PCB Layouts (Later Version) (8.5x11)
     
Skeleton 220 Cabinet View (8.5x11)


     
Skeleton 220 Parts List
     Component Datasheet Section


     
Skeleton 220 Inter-Connection Diagram and PCB Layouts (Early Version)
     
Skeleton 220 Inter-Connection Diagram and PCB Layouts (Later Version)
     Skeleton 220 Cabinet View

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