Figure 3-2. AN/ARC-210 Advanced Communications System Control Unit
(5) Frequency mode selector knob. Isolated position rotary switch (knob must be pulled out to enter or
exit positions marked PULL ). Selects the associated frequency or channel as marked. See the vendor s operator
manual for full description and operation.
(6) Pointer pushbutton switch. Positions pointer to select or deselect ancillary mode option identiied by
the cursor position by ancillary mode pushbutton switch (7) (Fig. 3-2).
(7) Ancillary pushbutton switch. Positions cursor under various ancillary mode options.
pointer pushbutton switch (--) to select and deselect ancillary modes (Fig. 3-2).
(8) Operational Mode Selector. Push-pull rotary switch selects the associated mode of operation. See
the vendor s operator manual for full description and operation.
3-12. RADIO CONTROL UNIT (RCU).
The RCU provides the crew with a centralized location for radio management. The available radios that can be
tuned by the RCU are:
VHF COMM 1
VHF COMM 2