TM 1-1520-240-10
3-2-17
CONTROLS/
INDICATOR
FUNCTION
T/R
Allows the ARC-220 to trans-
mit and receive in the selected
mode of operation.
ZERO
Erases all data (including data-
fill and keyfill) which has been
loaded into the system.
Value (12)
Two pushbutton switches in-
crements a field value or single
character value, depending on
cursor position.
3-2-23. Display Lines, HF Radio Set (AN/ARC-220).
The information displayed on each line is dependent
upon the operation being performed. This section speci-
fies what information can be displayed on each particular
line.
CONTROLS/
INDICATOR
FUNCTION
Line 1
Alpha-numeric display of 15
characters maximum contain-
ing channel title (call sign).
Default value - Mode: chan-
nel#
Line 2
ALE Address
Alpha-numeric display of 15
characters maximum contain-
ing the Call To (ADRS: xxx)
or Self (SELF: xxx) Addresss.
(ADRS:) and (SELF:) labels
are removed for addresses
greater than 10 characters in
length.
Noise Reduction
Character display (ON, OFF)
having a display format of -
NOISE REDUCE: xxx. De-
fault value is ON.
Fill Type
Character display (KEY,
DATA) having a display For-
mat - TYPE: xxxx x. Default
is DATA.
Contention Control
Character display (ON, OFF)
having a display format of -
LBC: xxx. Default is OFF.
CONTROLS/
INDICATOR
FUNCTION
Line 3
Receive Frequency
Numeric display (2.0 to
29.9999 MHz) with a display
format of RCV xx.xxxx.
ECCM Station Type
Character display (MEMBER,
ALTERNATE, MASTER, NET
ENTRY, ALT NET ENT). De-
fault is MEMBER.
Lines 3, 4
Character display of emission
mode (USB, LSB, AME, CW)
one space to right of frequen-
cy. Default is USB.
Line 4
Transmit Frequency
Numeric display (2.0 to
29.999 MHz) with format of
XMT xx.xxxx.
Time
Numeric display (00:00:00 to
23:59:59) with a format of -
Hour:Minute:Second.
Line 5
Link Protection
Character display (OFF, ON)
with a format of - LINK
PROT: xxx. Default is ON
(OFF if no link protection da-
tafill.
Date
Alphanumeric display (01
JAN 00 to 31 DEC 99) with
format of - dd MM yy.
Antenna Type
Character display (T/R, RCV)
with format of - ANT: x xx.
Default is T/r.
Line 6
Power Level
Character display (LOW,
MED, HIGH) with format of -
PWR: xxxx. Default is HIGH.
Squelch
Alpha-numeric display
(TONE, 0 to 5) with format of
- SQ: xxx.
Volume
Numeric display (1 to 8) with
format of - VOL: x.
Listen Before Talk
Character display (ON, OFF)
with format of - LBT: xxx. De-
fault value is OFF.
