Communication Equipment

Question 1

ARC-210 (Operation/Capabilities)

Answer 1

The Communications system has the following capabilities, which are selected by pointing device and menu options
on the pilot/copilot mission display
1. Line-of-Sight (LOS) VHF/UHF communications.
a. VHF/UHF clear or secure LOS voice comm/relay.
b. UHF HAVEQUICK (HQ), HAVEQUICK II (HQ II), SINCGARS, Antijam (AJ)/Electronic Protection
(EP), clear and secure LOS voice comm/relay.
c. International Duplex Maritime clear LOS voice comm.
d. Air Traffic Control (ATC) band LOS voice communications with 8.33 kHz and 25 kHz channel spacing.
e. VHF 121.5 MHz guard channel, UHF 243 MHz guard channel for emergency.
f. VHF/UHF Automatic Direction Finding (ADF) receiver capability.

2. UHF Satellite Communications (SATCOM) Over-The-Horizon (OTH) Communications.
   a. SATCOM secure voice communications (voice only). Narrowband (5 kHz) uses Advanced Narrowband
   Digital Voice Terminal (ANDVT) for voice encryption, wideband (25 kHz) uses KY-58.
   b. Demand Assigned Multiple Access (DAMA) SATCOM provides noninterfering multiple users
   capability for airborne, ground-based, and ship-based satellite communications.
3. Radio Terminal Set (RTS) — ARQ-44A two-way secure computer-to-computer data link and voice for data
   transfer between helicopter and ship.
4. Identification Friend or Foe (IFF) Subsystem — Location of other aircraft and response to interrogation
   from friendly forces. The interrogator portion of the IFF subsystem is part of the radar.
5. Link 16 Subsystem — jam-resistant, secure, tactical digital data and voice, combat ID, and relative
   navigation with low probability of exploitation.
6. Transmission of sonobuoy command tones.

Question 2

OCP

Answer 2

Operator Control Panel
The OCP is located on the lower console and is one of the primary interfaces between the pilots and the
communications subsystems. The OCP interfaces with the AMC in the processing and routing of audio signals
to and from the pilot and copilot stations. The pilot and copilot functions are independent and grouped side by
side on the OCP (right and left, respectively). The top portion of the OCP provides all ICS controls and a master
volume control for each pilot. The center portion of the OCP is shared by both pilots and permits selection of clear
(CLR) or secure (SEC), RELAY, UHF Direction Finding (DF), and Emergency (EMERG) modes of operation. The
bottom portion of the OCP provides audio reception selection and headset volume control for RAD 1, RAD 2, data
link, TACAN, acoustics, Link 16 J-Voice and underwater communications.

Question 3

Hawk Link C-Band vs. Ku-Band/Modes of Operation)

Question 4

Link-16 J-Voice (Initialization/Use)

Question 5

IFF Transponder (Modes/Define “Parrot” and “India”)

Question 6

ICS (Modes/Failures)

Question 7

Underwater Comms (ALFS)

Question 8

Underwater Acoustics Beacon

Question 9

HAVEQUICK (Operation/Set-up)

Question 10

SATCOM (DAMA vs. Dedicated)

Question 11

SINCGARS (Requirements/Set-Up)

Question 12

SATCOM (DAMA vs. Dedicated)