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1. If MEMBER is selected, ERF RECV will established net may also be used. Select a
appear. To receive ERF, appropriate manual channel number (1 thru 6) to retrieve an
frequency must be entered in SC mode, HSET channel for sending. When entered,
channel M selected, and tuned COLD. The the legend changes to SENDING. SENDING
channel number of an already established net will remain on screen until complete or until
may also be used. When pressed, ERF RECV 12 seconds have elapsed (whichever occurs
3-33
TM 1-1520-248-10
first). If the ERF transmission is unsuccessful, appropriate FH channel (L-3/L-4) and press
ERR will appear. R-2; LATE NET will box until the RT has
received a new time sync. LATE NET is only
NOTE available when helicopter is off the ground.
(COPY HSET function now resides on the
When helicopter is on the ground the legend COMM page (fig. 3-21) at R-2 when FH or
for L-2 is LOAD COMSEC or LOAD MODE FH-M selected.)
23.
11. LOAD (L-2)  Toggles between COMSEC, 16. FILL (R-3)  Allows TSEC, HSET, COMSEC,
HSET, LSET, and MODE 23. and LSET variables to be loaded to the RT
while the helicopter is on the ground. To load,
NOTE connect fill device to RT, select desired
variable on fill device, and turn fill device
power on. Press R-3, which will box FILL and
• L-2 must be selected to determine allow the RT to interrogate fill device. The
whether the radio will be expecting an TSEC variable is loaded by selecting manual
HSET, TSEC, or COMSEC fill. (M) channel at L-3/L-4 and pressing FILL.
• If hopsets are copied to a channel not Once TSEC variable is loaded, legend COLD
currently being displayed, accessing that will appear adjacent to channel indicator
channel will cause the proper indication to when M channel is selected. If an HSET is
appear. interrogated, then that HSET will be stored
with displayed HSET channel number. If an
LSET is interrogated, then LSET channel
12. CH key (L-3/L-4)  Increases/decreases the
displayed channel number (manual and 1 thru number associated with LSET will be stored
6) and displays the associated channel code/ and displayed. If a COMSEC is loaded, the
net identification. variable will be stored in the radio on the
selected channel. After completion, turn fill
NOTE
This channel number is not to be confused
with the operational frequency channel of
the radio. This channel is for storage of the
frequency hopping parameters only.
13. L-5  Not used for CDS4 (HSET EDIT
function on COMM page (fig. 3-21) at R-1
when FH or FH-M mode is selected).
NOTE
While LATE NET is boxed, transmission by
other members of the net causes the radio’s
time to synchronize.
14. ZEROIZE (R-1)  clears all data stored in
the RT, including all preset SC frequencies
and FH data. When pressed ZEROIZE will
flash; press R-1 again to ZEROIZE. ZEROIZE
is only available when the helicopter is on the
ground.
PULL
MAN
PULL
BKUP
BRT
C
ONT
VSD HSD MMS
FM-1 T/R
PWR NORM PLAIN
PLAIN
VHF T/R
FM-2 T/R
RETRAN
DEL
STBY
00
0000
M1
M3A
M4A
ADD
COMSEC
406075-1420
J2992
FM
RETRAN
FM-1
CONTROL
PAGE
125INF
17 035.975
34INFT
UHF T/R+G 15 395.000
TOWERX
5.15.050
CIPH FILL 1
HF
110CAV
18 042.355
PWR NORM PLAIN
M 032.475
1 310 CTRP
2 723 125INF
3 409 34ARTY
4
5
6
7
8
9
10
11
12
13
14
15
16
17
15. LATE NET (R-2)  allows the RT containing
all fill data, but whose clock is out of sync, to Figure 3-21. (CDS4) COMM Page (Frequency List
join a net. To activate LATE NET, select Displayed)
3-34
TM 1-1520-248-10
device power off and remove from RT. FH will 10. R-3  Press to select FILL. When FILL
not function if fill device is left attached to RT. unboxes, turn power on fill device to OFF and
disconnect.
17. CLEAR (R-4)  Clears individual channels.
When pressed, display changes to CH=; 11. L-3/L-4  Press to cycle channel and return
select channel to be cleared and enter on to channel M. Channel should say M and
MFK. COLD.
NOTE 12. L-1  Press to select ERF RECV. ERF
RECV will box and RT is now ready to
ERR will appear adjacent to R-4 if current receive ERF from NCS.
HSET channel is entered.
NOTE
3-29. AN/ARC-201D SINCGARS LOADING/ ERF procedures can be done in plain text or
　
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