TM 1-1520-238-10
3-26
Table 3-8.
AN/ARC-201 Control Functions – continued
Control
Function
PRESET switch
Selects specific predetermined operating conditions within the transceiver.
MAN (Manual)
In single channel mode, selects any operating frequency within the prescribed band, in 25
kHz increments, using the keyboard. Inoperative in FH modes.
Positions 1
through 6
In SC mode, preset frequencies are selected or loaded. In FH or FH-M mode, net
parameters are selected.
CUE
Used by a non-ECCM radio to signal an ECCM radio. In SC mode, this is a seventh preset
frequency.
IFM RF POWER
switch
Not used. Leave switch in OFF position.
Keyboard
To enter or display data, depending on the key switch actuated and the positions of the
MODE and FUNCTION switches.
Numbers 1
through 9
To key in frequency, and load time information and frequency offsets.
FREQ
To display the current operating frequency during single channel manual or preset operation.
To load manual and preset frequencies.
SEnd OFST
(Offset)
To modify a single channel operating frequency which has been manually selected or preset
for offsets of 5 kHz or 10 kHz or to initiate a transmission if a hopset or lockout set is in
the holding memory and the MODE switch is set to FH-M.
TIME
To display or change the time setting maintained within each transceiver.
Sto ENT (Store
Enter)
Initiates entry into transceiver of all valid complete entries by keyboard entry. Stores a
received hopset or lockout set held in holding memory.
HoLD (Hopping
Load) / 0
Initiates transfer of ECCM parameters to transceiver. Enter 0 in the same manner as other
keyboard numbers.
CLR (Clear)
Clears partial or erroneous entries.
VOL Control
Adjusts receiver volume.
FILL Connector
To enter ECCM variables from an external fill device.
