TM 55-1510-220-10
(3)
Transmitter operating procedure:
1.
Transmitter-interphone selector switch
(audio control panel, fig. 3-1) No.2 position.
2.
Microphone switch Press.
(4)
Shutdown procedure:
1.
Mode selector switch (fig. 3-5) OFF.
d. VHF AM-FM Emergency Operation:
(1)
Emergency AM Mode:
1.
Transmitter-interphone
selector
switch (audio control panel, fig. 3-1)
No. 2 position.
2.
Mode selector switch TR or DF, as
desired.
3.
Frequency control/emergency selector
switch EMER AM.
4.
Manual
frequency/preset
channel
selector Automatically tuned to 121.5
MHz.
5.
Microphone switch Press.
(2)
Emergency FM mode
1.
Transmitter-interphone
selector
switch (audio control panel, fig. 3-1
No. 2 position.
2.
Mode selector switch TR or DF, as
desired.
3.
Frequency control/emergency selector
switch EMER FM.
4.
Manual
frequency/preset
channel
selector switch Automatically tuned to
40.5 MHz.
5.
Microphone switch Press
6.
Shutdown mode select switch OFF.
3-13. VOICE
SECURITY
SYSTEM
TSEC/KY-58
(PROVISIONS ONLY).
a.
Description. The KY-58 provides secure voice
communications for VHF COMM, VOW, and UHF COMM
radio communications.
b.
Purpose. These operating procedures provide the
user of the TSEC/KY-58 with abbreviated operating
instructions. They are a condensed version of the TSEC/KY-
58 operating instructions contained in TM 11-5810-262-20.
c.
Controls and Functions .
(1)
MODE switch. Allows operator to select the
type, of communication desired.
(a)
P
Plain,
enables
unciphered
communications.
(b)
C Cipher, enables ciphered
communications.
(c)
LD Load, enables codes to be loaded.
(d)
RV Receive Variable, enables remote
loading of codes.
(2)
VOLUME control. Controls audio output
volume.
(3)
FILL connector. Accepts connector from
common fill device (KYK-13), general purpose tape reader
(KOI-18), or net control device (KYX15) to load variables
into the KY-58.
(4)
FILL switch. Allows the operator to select
any of the six storage registers. This switch is also used to
"Zeroize" registers 1-5 only, or all six (1-6) as desired.
(5)
POWER switch. Controls system power.
(a)
TD Time delay.
(b)
ON Turns set on.
(c)
OFF Turns set off.
(6)
BAT INSTL screws. Removal of the screws
allow access to the component battery. When installing a
new battery, enter the date on the writing surface.
(7)
AUDIO IN. Adjusts aircraft-to-ground audio
volume level.
(8)
Writing surface. Used to record addresses of
the codes.
Change 2
3-13
