d. You have covered the three major components of the AN/GRC-193,
which are the receiver-transmitter RT-1209, the amplifier-converter
AM-6879, and the power amplifier AM 6545.
Now, we will study the
antenna coupler CU-2064, which is e last major component of the
The antenna coupler automatically matches impedance of
The coupler receives its signal to start tuning from
ready signal, to the power amplifier, when tuning is complete.
Signals of forward and reflected power and tuning fault indications
are sent to the power amplifier for display on green, yellow, and red
The unit is
cooled by a forced air heat exchanger system that includes a
thermostatically controlled external fan and a continuously operating
The external fan motor will not operate all of the
It will come on only when the internal temperature reaches
Antenna coupler CU-2064/GRC-193.