Specifications

SECTION III
INSTRUMENTATION AND AVIONICS
MODEL 560
The STO button is used to perform three separate functions. (1) When in the channel mode (NOT in
program mode - program mode is annunciated by the flashing dash adjacent to the channel number),
pressing and holding the STO button causes the control to display the letters "TX" and the tuned transmit
frequency while the receiver monitors the transmit frequency. This enables the pilot to listen for signals on
the transmit frequency of duplex channels. (2) If STO is pushed while the microphone is keyed, a 1000 Hz
tone is broadcast, which may be used to break the squelch of some stations. In the program mode,
selected by incrementing the cursor until the dash appears in flashing mode, the selected frequency may be
entered into the channel appearing under the CH designation on the display.
In order to program any one of the 19 user programmable channels, proceed as follows: (1) Select
the channel to be programmed. (2) Step the cursor to the frequency digits, as described above, and set in
the desired frequency. Changing the displayed frequency of a programmable channel will automatically
place the control head in program mode, as indicated by the flashing dash adjacent to the channel number.
(3) Press STO to transfer the frequency into the T/R unit receiver. The flashing "TX" will appear in the
upper right of the display and the cursor will move to the 10/1 MHz digits. (4) Change the display to the
desired transmit frequency (if different from the receive frequency). (5) Press STO again. When the
transmit frequency is accepted, the letters "TX" and the cursor will disappear.
If the user desires to operate the radio in the directly tuned mode without a channel number
annunciated or a flashing dash, he may tune the channel selector to zero and then tune a frequency. The
zero will disappear and the annunciated frequency will be relocated. Other frequencies may be selected in
like manner as long as a channel other than zero is not selected.
A photocell activated dimming circuit adjusts the brightness of the display to compensate for changes
in the ambient light level.
MAGNASTAR C-2000 DIGITAL AIRBORNE TELEPHONE (OPTIONAL)
The MagnaStar C-2000 can be used to place and receive voice telephone calls, send data
transmissions via modem, as well as to send and receive facsimile transmissions. A central processor on
board each MagnaStar equipped airplane controls and coordinates for all voice calls, data and fax modem
transmissions, and in-cabin intercom functions. The MagnaStar continually scans and monitors ground
based radio cells for the clearest usable communications channel while in flight. The LCD on the handset
indicate the clearest usable communications channel while in flight. The LCD on the handset indicates the
availability of a channel. The system searches for the optimum channel when a call is initiated and
connects the calling and receiving parties. The system allows for multiple handsets and two simultaneous
calls may be placed (voice, fax, or data). Reliable and clear connections are ensured at all times through
digital technology. Coverage is provided throughout North America above 17,000 feet (much of the United
States is covered at lower altitudes) and additional coverage is available on the ground at many major
domestic airports.
All operations are performed via the handset. The handset features adjustable volume and a
telephone system numerical keypad. the two-button volume control is located on the side of the handset
and should be used to adjust the volume to the users desired level. Two additional keys are also included:
“+” and “END CALL”. The LCD on the handset displays information and “menu” style selections,
reducing the need for separate instruction. A credit card reader is also provided in the handset, allowing
optional billing to individual user accounts.
To initiate an Aircall, the ground part must dial 1-800-AIRFONE. When prompted, enter the Aircall
number of the aircraft, a station handset, or of an individual traveler, then enter the callback telephone
number of the ground party. To return a call to the displayed callback number, take the handset off-hook
and press either “1” or “2”. Pressing “1” will charge the call to the aircraft account and automatically dial
the number. Pressing “2” will allow you to charge the call to a credit card; after pressing “2” wait for the
tone and then swipe the card or manually input the card number.
The C-2000 has many features not included in this manual. For more detailed information, refer to the
MagnaStar C-2000 System Digital Airborne Telephone User’s Guide.
I 3-22 Configuration AA 56OMB-01