h. Signal through J-3513/U. The signal is applied from the J-3513/U J1
pin D, through the CX-13062/U pin D to the KY-57 AUDIO jack, through the
Incoder. The Incoded signal is applied to the RAD jack pin D, through the
CX-13061/U to J-3513/U J3 pin R, through K3 to J6 pin R to the CX-13064/U
(Figure 72). (Trace these circuits on your system diagram.)
Figure 72. Modulation circuit, KY-57 turned ON,
cipher switch to C, cipher text.
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