SHORT ELECTRIC WAVE RADIATION 



555 



The power supply is mounted separately from the oscillator and the 

 necessary leads are run to the proper points of connection in the oscil- 

 lator circuit. The oscillator circuit is mounted on a baseboard in 

 approximately the manner shown in the circuit sketch. This simplifies 

 wiring and provides the most direct high-frequency paths for the oscil- 

 lator current. The frequency range covered by this oscillator may be 

 varied by varying the size of the loops LI and L2. With the dimensions 

 mentioned the frequency of generation will be in the neighborhood of 

 60 megacycles. 



HALF-WAVE OSCILLATOR 



Figure 4 shows the detailed connections and layout of a half-wave 

 oscillator which supplies voltages to condenser CI for test purposes. 



Fig. 3. 



L2 



SR, 



C, 



400V 



Ij^lOOOOOQOQOO 



W 



7.5V 



• iiov ' 



Fig. 4. 



T, 



The circuit uses a UX210 tube and the values of XI, X2, Rl, and T are 

 the same as those shown in Fig. 3. The inductance rods LI and L2 are 

 made of }i-in. copper tubing. One end of the rods connects directly 

 to the base of the vacuum tube, while on the other end is mounted a 

 condenser made of two copper plates approximately 3 in. square and 



