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HSET. The HSET can be saved by again
pressing L-1 which changes the text to
STORE CH= and a cursor. Enter a channel
number (1 thru 6). The legend changes to a
boxed ERF RECV. When the RT has stored
the channel, the box around ERF RECV goes
away. If CONTROL is selected, the ERF
SEND legend is replaced by RETRIEVE CH=
and a cursor. To send ERF, appropriate
manual frequency must be entered in SC,
channel M selected, and tuned COLD. Select
a channel number (1 thru 6) to retrieve an
HSET channel for sending. When entered,
the legend changes to SENDING. SENDING
will remain on screen until complete or until
PULL
MAN
PULL
BKUP
BRT
C
ONT
VSD HSD MMS COMM
FM-1
5 NET 409
ERF RCV MEMBER
CH 5 XXX
LATE NET
COPY HSET
FILL
CLEAR
PAGE 1
406075-1573-2
J1257
HSET LSET
Figure 3-12. FM-1 FM-2 Radio Control Page 2 12 seconds have elapsed (whichever occurs
(FH Mode Member) first). If the ERF transmission is unsuccessful,
ERR will appear.
9. HSET/LSET (L-2) Toggles between HSET
and LSET.
NOTE
• After copying hopsets to a blank channel,
the display will indicate NO HOPSET XXX
even though the HOPSET is valid. A
channel up/down action (L-3/L-4) will
cause t h e p r o p e r message t o be
displayed.
• If hopsets are copied to a channel not
currently being displayed, accessing that
channel will cause the proper indication to
appear.
• If hopsets are copied to a channel not
currently being displayed, accessing that
channel will cause the proper indication to
appear.
PULL
MAN
PULL
BKUP
BRT
C
ONT
VSD HSD MMS COMM
FM-1
CH 5 XXX
HSET
EDIT
CLEAR
PAGE 1
C 89.500
ERF SEND CONTROL
406075-1573-3
J1257
ZEROIZE
COPY HSET
FILL
HSET LSET
Figure 3-13. FM-1 FM-2 Radio Control Page 2 10. CH key (L-3/L-4) Increases/decreases the
(FH Mode Control) displayed channel number (manual and 1 thru
3-22
TM 1-1520-248-10
6) and displays the associated LSET (1 thru R-3, which will box FILL, and allow the RT to
8) channel code/net identification. interrogate fill device. The TSEC variable is
loaded by selecting manual (M) channel at LNOTE
3/L-4 and pressing FILL. Once TSEC variable
is loaded, legend COLD will appear adjacent
This channel number is not to be confused to channel indicator when M channel is
with the operational frequency channel of selected. If an HSET is interrogated, then that
the radio. This channel is for storage of the HSET will be stored with displayed HSET
frequency hopping parameters only. channel number. If an LSET is interrogated,
then LSET channel number associated with
11. HSET EDIT (L-5) Only available when LSET will be stored and displayed. After
CONTROL is selected on FM-1 or FM-2 completion, turn fill device power off and
Radio Control page 1 and HSET is selected remove from RT. FH will not function if fill
on FM-1 or FM-2 Radio Control page 2. This device is left attached to RT.
allows controller to change an existing
channel code or create a new channel code. 15. CLEAR (R-4) Clears individual channels.
When pressed a cursor will appear. The last When pressed, display changes to CH=;
two digits of the channel displayed between select channel to be cleared and enter on
L-3/L-4 can then be entered/changed, MFK.
followed by pressing ENTER on the MFK.
Valid entries are 00 99. Once accepted the NOTE
new identifier will be displayed next to the
channel number at L-3/L-4. ERR will appear adjacent to R-4 if current
HSET channel is entered.
NOTE
While LATE NET is boxed, transmission by 3-20. AN/ARC-201 SINCGARS LOADING/
other members of the net causes the radio’s COMMUNICATION PROCEDURES.
time to synchronize.
To load TSEC and HSET/LSET variables and initiate
communication checks, proceed with the following:
12. ZEROIZE/LATE NET (R-1) ZEROIZE
clears all data stored in the RT, including all
preset SC frequencies and FH data. When 1. COMM key (or DSPL SEL switch) Press.
pressed ZEROIZE will flash; press R-1 again COMM page (fig. 3-7) displays.
to ZEROIZE. ZEROIZE is only available when
the helicopter is on the ground. LATE NET 2. L-1/L-5 Press to select FM-1 or FM-2 and
allows the RT containing all fill data, but display frequency list (fig. 3-8).
whose clock is out of sync, to join a net. To
activate LATE NET, select appropriate FH 3. R-5 Press to select FM-1 or FM-2 Radio
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TECHNICAL MANUAL OPERATOR’S MANUAL FOR ARMY OH-58D HELICOPT(49)
