User manual

Page 66
Aircraft Operation Manual
Piper Cheyenne I, IA, II, IIXL
For ight simulation use only
KY 196A COM1/COM2 Communications Radio Operation
Power up
When you turn the ON/OFF/Volume knob clockwise to the „ON” position, your
unit will display the frequencies last used in the „USE” and „STBY” (standby)
windows.
NOTE: As with all avionics, the KY 196A should be turned on only after engine
startup. This simple precaution will help protect the solid-state circuitry and ex-
tend the operating life of your equipment.
Transmitting
During COMM transmissions, a „T” will appear between the „USE” and „STBY”
windows to indicate the keying of the microphone.
KY 196A Frequency Mode (Normal Operation)
1. Select a new frequency in the „STBY” window, using the frequency selection
knobs. The larger knob controls changes in increments of 1MHz. The smaller
knob controls changes in increments of 50kHz when pushed in, and 25kHz when
pulled out.
At the outside limits of the band, the display will „wrap around” to the other
end of the band, going from 136MHz to 118MHz.
8.33K
Photocell for
automatic dim-
ming
“USE” window
shows active fre-
quency
“STBY” window shows
stored or newly-
entered standby fre-
quencies
“T” indicates mike
button is
depressed for
transmission
Frequency transfer
“flip-flop” button
Channel
button
ON/OFF switch Frequency selec-
tor knobs