ASSIGNMENT 4
Textbook Assignment: “Link-11 System,” chapter 4, pages 4-18 through 4-19
(continued); “Link-11 Fault Isolation,” chapter 5, pages 5-1
through 5-17.
4-1.
A total of how many data tones
are in the composite tone
package developed by the DTS?
1. 13
2. 14
3. 15
4. 16
4-2.
The intelligence (data bits) in
a data tone is stored by which
1.
2.
3.
4.
of the following methods?
Phase shifting the tone by a
predetermined amount with
respect to the following
frame
Phase shifting the tone by a
predetermined amount with
respect to zero degrees
Phase shifting the tone by a
predetermined amount with
respect to the preceding
frame
Increasing or decreasing the
amplitude of the data tone
with respect to the
preceding frame
4-3.
During receive operations,
exactly how many EDAC bits are
extracted from the received
data tones?
1.
One
2.
Two
3.
Five
4.
Six
4-4.
The EDAC bits enable the DTS to
correct a total of how many
received bit errors?
1.
One
2.
Two
3.
Three
4.
Four
4-5.
4-6.
4-7.
4-8.
4-9.
When operating the Link-11 with
a UHF radio set, you should
place the SIDEBAND SELECT
switch in what position only?
1.
LSB
2.
USB
3.
DIV
4.
AUTO
With Link-11 transmitting on
the HF range and the sideband
select switch set to the AUTO
position, which of the
following priorities are used
by the DTS to find the data
word with no errors to send to
the computer?
1.
LSB, USB, DIV
2.
LSB, DIV, USB
3.
DIV, LSB, USB
4.
DIV, USB, LSB
The Link-11 radio set is in the
transmit mode when the key line
is clear.
1.
True
2.
False
Which of the following
conditions would NOT be a valid
reason for changing the unit
functioning as NCS in a Link-11
net to improve net
communications?
1.
The current NCS has one PU
address entered wrong
2.
The current NCS has poor
receiver sensitivity and is
polling on top of PU
responses
3. Several PUs are in a
propagation shadow
4.
Several PUs are out of range
of the current NCS unit
Changing frequencies will
always solve Link–11 problems.
1.
True
2.
False
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