25. R-442 RECEIVE SIGNAL PATH/MONITORING CIRCUIT (KY-57 OFF).
a. Signal routing with KY-57 OFF. The receive signal path/monitoring
circuit provides monitoring of the R-442 receiver audio circuits.
provides monitoring, to each crew member's C-2298 (when set to ALL and B),
and to a speaker when connected to the R-442.
(1) The received RF signal is applied, through the antenna system and
CG-1773, to the RF connector (Figure 92). At the RF connector, the signal
is applied to the receivers RF and IF assemblies and is demodulated. At the
A-4000 assembly (X-MODE switch set to
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R-442 receive signal path.