3-2-19. Controls and Functions. (fig. 3-2-7)
Momentary contact toggle
switch used to clear (ZER-
OIZE) any crypto-net variables
stored in the TSEC/KY-58.
Two position toggle switch;
DELAY position used when re-
ceived signal is to be retrans-
Two position rotary switch
used to select TSEC/KY-58 op-
erating mode. A third position
(C/RAD 2) is covered and
Permits normal (unsecured)
communications on associated
FM radio set.
Permits secured communica-
tions on associated FM radio
Six position, rotary switch,
used to select any of six stor-
age registers for storage of
crypto-net variable (CNV).
Three position rotary switch
used to select the operating/
loading mode of the TSEC/
Allows normal operation of
Allows normal loading of CNV.
Allows remote loading of CNV.
POWER ON Switch
Two position toggle switch
used to apply power to TSEC/
3-2-20. Normal Operation.
a. Operating procedures for secure voice.
To talk in secure voice, the KY-58 must be
loaded with any number of desired variables.
Set the MODE switch to OP.
Set the FILL switch to the storage register
which contains the required CNV.
Figure 3-2-7. Remote Control Unit TSEC/KY-58
Pull out and lift up the POWER switch to ON.
A beeping tone and background noise will be heard in the
headset. Before the set can be used, the tone must be
cleared by momentarily keying the No. 1 VHF AM/FM
radio with the PTT switch.
Set the PLAIN C/RAD1 switch to C/RAD1.
If the signal is to be retransmitted, pull out
and lift up the DELAY switch to (ON).
Clear voice procedures: To operate in
clear voice (plain text) simply:
Set the PLAIN-C/RAD switch to
Operate the equipment.
b. Zeroizing procedures.
Instructions should originate from the net con-
troller or commander as to when to zeroize
Lift the red ZEROIZE switch cover.
Push the spring-loaded ZEROIZE switch
up. This will zeroize position 1-16.
Close the red cover. The equipment is now
zeroized and secure voice communications are no lon-
c. Automatic remoter keying procedures.
Automatic remote keying (AK) causes an old
CNV to be replaced by a new CNV. Net con-
troller simply transmits the new CNV over the
air to your KY-58.
The net controller will use a secure voice
channel, with directions to stand by for an AK transmis-
sion. Calls should not be made during this stand-by ac-