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7-7
System Operation
7
NOTE:
NOTE:
7.9 Antenna Basics
7.9.1 Antenna Basics
By definition, an antenna is a device used to transform an RF signal, traveling on
a conductor, into an electromagnetic wave in free space. Antennas demonstrate a
property known as reciprocity, this means that an antenna will always maintain
the same characteristics regardless if it is used to transmit or receive. Most
antennas are resonant devices, which means they operate efficiently over a
relatively very narrow frequency band. An antenna must be tuned to the same
frequency band of the radio system to which it is connected, otherwise the
reception and the transmission will be impaired.
The antennas in your wireless repeater have been tuned to operate in the 2.4
GHz band to receive, and the 915 MHz band to transmit information.
In some cases, a short RF cable may be used to connect an antenna to your device.
Please note that RF extension cables will always add some loss to the transmitting
signal strength. The longer the cable the more signal will be lost over that cable.
Because of this the length of the cable should be kept as short as possible.
7.10 Antenna Placement
Proper antenna installation is important and will allow you to achieve maximum
performance and range between your connector/transmitter, repeater, and
receiver unit.
Your connector/transmitter should not be installed on the same side of the wall as the
receiver. If mounted close to each other on the same wall, the radio waves are likely to
be subject to interfering dispersions or reflections. The best positioning is to have the
connector/transmitter installed on the opposite or connecting wall to the receiver.
7.10.1 Horizontal Antenna Placement
Figure 7-7. Horizontal Antenna Placement
If your Connector/Transmitter is mounded in a horizontal position in your
application you should mount your receiving so that the same polarization is
achieved with the corresponding receiving antenna. As shown in the “Horizontal”
example above.
!
L
OW BA
T
T
TX
SE
TUP
PRESS
PRESS
ON/OFF
UW
T
C
UNIVERSAL WIRELESS THERMOC
OUPLE
C
ONNEC
T
OR
R
R
UWTC SERIES
WIRELESS RF RECEIVER / REPEATER
OMEGA ENGINEERING INC. omega.com
IC #1846A-XBEEXSC
TX
RX
PWR
SB
Stamford, CT 06907 Made in U.S.A.
USB
FCC ID: MCQ-XBEEXSC
9-24 Vdc
ANTENNA
+
-
ANTENNA
RECEIVE
IC #4214A-XBEEPRO
FCC ID: OUR-XBEEPRO
TRANSMIT
This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions;
2) This device must accept any interference received,
including interference that may cause undesired
TRANSMIT: 915 MHz
1) This device may not cause harmful interference;
operation.
RECEIVE: 2.4 GHz
ANTENNA
USB
I/O
5-12 Vdc
OMEGA ENGINEERING, INC.
Stamford, CT 06907
UWTC SERIES
WIRELESS RF RECEIVER
915 MHz
omega.com
Made in U.S.A.
-
+
!
TX
RX
SB
PWR
This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions:
1) This device may not cause harmful interference;
2) This device must accept any interference received,
including interference that may cause undesired
operation.
FCC ID: MCQ–XBEEXSC
IC #1846AA–XBEEXSC
F
®
Summary of Contents for UWTC-RPT1
Page 6: ...UTWC RPT1 Long Range Wireless Repeater Receiver System For UW Series Transmitters iv NOTES...
Page 23: ...NOTES Repeater Setup 5 5 5...
Page 28: ...NOTES Repeater Mounting and Installation 5 6 5...
Page 37: ...NOTES System Operation 7 7 9...
Page 38: ...NOTES 7 10 UTWC RPT1 Long Range Wireless Repeater Receiver System For UW Series Transmitters...