Transmitter-oscilloscope coupler for CB signals

  
To display an rf signal, connect LI to the transmitter and points A and B to the vertical plates of the oscilloscope. Adjust LI for minimum SWR and C3 for the desired trace height on the CRT
Transmitter-oscilloscope coupler for CB signals - schematic

L2 = 4 turns #18 on %" slug tuned rf coil form, Ll = 3 turns #22 adjacent to grounded end of Ll, Cl, and C2 = 5 pF, C3 = 75 pF trimmer.




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