TM 1-1520-238-10
3-25
Table 3-8.
AN/ARC-201 Control Functions
Control
Function
FUNCTION switch
Selects basic operational condition of the transceiver.
OFF
Primary power is off. Memory holding battery power is on. Used during limited periods of
inactivity when reloading FH parameters and preset frequencies is not desirable, e.g.,
between missions or overnight.
TEST
Self test of the transceiver and ECCM function.
SQ ON (Squelch
On)
Power is applied to the transceiver and the squelch is enabled.
SQ OFF (Squelch
Off)
Power is applied to the transceiver and the squelch is inoperative.
RXMT
(Retransmit)
Not used.
LD (Load)
To load preset frequencies by normal keyboard entry, to fill ECCM net parameters and
lockout channels, and to reset time.
LD-V (Load –
variable)
To load the TRANSEC variable into the transceiver for use with ECCM.
Z-A (Zero All)
Pull and turn switch. Not an operational position. Zeros ECCM variables. Clears the
TRANSEC variable to avoid a security compromise.
STOW
Pull and turn switch. Removes all power from the transceiver, including memory holding
battery power. Used for extended storage.
MODE switch
Selects operational mode.
HOM (Homing)
Not used.
SC (Single
Channel)
Selects single channel mode of operation. Operating frequency is selected by PRESET
switch or keyboard entry.
FH
Selects (FH) mode of operation. PRESET switch positions 1 to 6 select frequency hopping
net parameters.
FH-M (Frequency
Hopping –
Master)
Pull and turn switch. Designates control station as the time standard for all communicating
radios within a common net.
