The Wireless-Set-No19 Group

 

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Wireless Set No.19 High Power RF Amplifier
 
 
 
 
Front view of the controls of the Wireless Set No.19 High Power RF Amplifier.
 
     
 
 
 
Inside view of the amplifier case, you can see the air vent for the large dynamotor at the back left side of the case, this is where the fan on the dynamotor sucks air through to cool the amplifier and motor.
 
 
 
 
 
 
Top side view of the amplifier showing the pair of 807 PA valves (tubes) on the left and the large dynamotor power supply on the right, power and RF switching relays in the middle at the bottom of the photo.
 
     
 
 
 
Inside bottom view with screening cover removed, the silver square box in the middle of the chassis is the input RF transformer that sends a DC voltage back to the WS19 to indicate low power RF output when the HP Amp is switched off.
 
     
 
 
Bottom view of the amplifier with the screening plate in place.
 
 
 

 

 

 

 

 

 
Under side of the screening plate showing the insulator surface.
 
     
 
 
 
Rear view of the amplifier showing the fan on the back of the dynamotor for cooling, also a clear view of the two 807 Pentode valves (tubes) and the RF/DC switching relays. You can also make out the RF transformer used to indicate high power RF output when the amplifier is in use, by sending a DC voltage back to the WS19, this can be seen on the vertical screening plate, left side top of the screening plate.
 

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