8
RE
PEATER OVERVIEW
How the Repeater Works
The repeater allows 2-way radios, base stations or
call boxes to communicate through the repeater in
order to extend the coverage range and/or
overcome communication dead spots.
In the Figure 3a, the repeater gets the signal “X”
that Paul transmits from his radio and converts it
into a “Y” frequency that re-transmits to Tom. In
Figure 3b, when Tom answers back to Paul, his
radio also uses the “X” frequency to transmit. The
repeater does the same frequency conversion (“X”
to “Y”) and re-transmits it to Paul using frequency
“Y”.
Not only are Paul and Tom able to communicate
using “X” and “Y” frequencies, but so can all other
2-way, repeater capable radios that may be in the
area* working on those same frequencies settings.
Note:
The repeater needs to re-transmit in a
different frequency from what it received in
order to avoid interferences.
TX
in
an
“X” f
re
q
ue
ncy
R
X
in
the
“Y”
f
re
q
uenc
y
Repeater
R
X
the
“X” f
re
q
uency
f
rom
Pau
l
and
re
-TX
it
to
T
om
using
“Y” f
re
q
uency
Pau
l
T
om
Figure 3a. How the Repeater Works (TX)
R
X
in
an
“Y” f
re
q
uency
TX
in
the
“X” f
re
q
uenc
y
Repeater
R
X
the
“X” f
re
q
uency
f
rom
T
om
and
re
-TX
it
to
Pau
l
using
“Y” f
re
q
uency
Pau
l
T
om
Figure 3b. How the Repeater Works (RX)
2000018_B_PORS_en.book Page 8 Thursday, January 14, 2010 2:10 PM
