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or channel number is not known, go to step MEMORY OR CHANGING A STORED 11.
FREQUENCY  HF  SIMPLEX (CHANNELS 02
NOTE THROUGH 04).
• Channel number must be known to call up 1. CCOOMMMM pkaegye ( o(fri gD. S3-P7L) wSiEllL d isswpliatcyh.)  Press.
a stored frequency. Channel numbers and
frequencies are listed on HF FREQ page.
2. Radio  Select HF by pressing radio select • Manual frequencies and channels 01 switch on pilot collective control head (fig. 3-
through 04 are dedicated to simplex 3) to position 4 or rotating transmit select
operation (single frequency for transmit switch on the CSC panel (fig. 3-2) to position
and receive). Channels 05 through 09 are 4. Arrow on COMM page will move to HF line.
dedicated to half duplex operation
(separate frequency for transmit and
receive). 3. HF key  Press. HF FREQ page (fig. 3-23)
will display.
10. CHAN switch  Press up or down until
desired channel is displayed at top of HF 4. NEW XMIT key  Press. Cursor will display
Control page. ADV HF RADIO TUNE next to first unused channel or channel 05 if
message will display at bottom of display all channels are used. Keyboard is activated.
while radio is tuning. Channel number,
frequency, and address code, if used, will
display at top of page and on RFD. HF radio 5. CURSOR keys  Press as required to move
is now set for operation. Steps 11 through 13 cursor to desired channel.
may be disregarded.
6. Frequency desired  Enter on MFK, pressing
11. KYBD key  Press. Cursor will replace first two digits, decimal, and last four digits.
KYBD. Frequency will display in XMIT and RECV
3-43
TM 1-1520-248-10
7. ENTER key  Press. New frequency is
columns as it is entered. Verify frequency entered into memory.
displayed is correct.
8. SELADR XMIT key  Press to activate
NOTE keyboard for entering selective address code,
transmit. Cursor will display to the right of
It is not necessary to enter a zero (0) before frequency.
the first two digits. Also, system will assume
zeros for digits after decimal point if nothing 9. Selective address code, transmit  Enter on
is entered. MFK. Code will display in XMIT column to the
right of frequency.
7. ENTER key  Press. New frequency is
entered into memory. NOTE
8. To enter additional simplex frequencies into Valid address codes consist of any four
HF memory, repeat steps 5 through 7. letters between A and M in any order. No
letter may be used twice.
3-43. ENTERING A FREQUENCY INTO 10. NEW RECV key  Press. Cursor will move to MEMORY OR CHANGING A STORED RECV column. Keyboard is activated to enter
FREQUENCY  HF  HALF DUPLEX receiving frequency.
(CHANNELS 05 THROUGH 09).
11. RECV frequency desired  Enter on MFK,
1. COMM key (or DSPL SEL switch)  Press. pressing first two digits, decimal, and last four
COMM page (fig. 3-7) will display. digits. Frequency will display in RECV column
as it is typed.
2. Radio  Select HF by pressing radio select
switch on pilot collective control head (fig. 3- NOTE
3) to position 4 or rotating transmit select
switch on the CSC panel (fig. 3-2) to position It is not necessary to enter a zero (0) before
4. Arrow on COMM page will move to HF line. the first two digits. Also, system will assume
zeros for digits after decimal point if nothing
3. HF key  Press to display HF FREQ page is entered.
(fig. 3-23).
12. ENTER key  Press. New frequency is
4. NEW XMIT key  Press. Cursor will display entered into memory.
next to first unused channel or channel 05 if
all channels are used. Keyboard is activated 13. SELADR RECV key  Press to activate
to enter transmitting frequency. keyboard for entering selective address code,
receive. Cursor will display to the right of
5. CURSOR keys  Press as required to move receiver frequency.
cursor to desired channel.
14. Selective address code, receive  Enter on
6. XMIT frequency desired  Enter on MFK, MFK. Code will display in RECV column to
pressing first two digits, decimal point, and the right of receive frequency.
last four digits. Frequency will display in XMIT
column as it is typed. NOTE
NOTE Valid address codes consist of any four
letters between A and M in any order. No
It is not necessary to enter a zero (0) before letter may be used twice.
the first two digits. Also, system will assume
zeros for digits after decimal point if nothing 15. SCAN ADD and SCAN DEL key  Press as
is entered. required to add or delete receiver scan
　
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