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CWSI YAGI ANTENNA INSTALLATION GUIDE 

 

3 of 6 

-Confidential - 

Tuesday, August 02, 2011 

4

 

Antenna Characteristics 

 

The  Yagi  Antenna  has  a  very  narrow  and  highly  directional  radiation  pattern.  The  majority  of  the  RF 
energy is focused to come out the front end of the antenna, i.e. where you point the antenna is where 
90% of the RF signal is transmitted. The radiated pattern of a Yagi antenna can be considered a straight 
line with a very narrow corridor running its length that may be able to be tapped into depending upon 

SERIES-3

FIRE ALARM  REPE ATER

, LLC

CP-3000

ww w .CWSIFir e.com

CP3000 Yagi to AR-3 Yagi

SERIES-3

FIRE ALARM  REPE ATER

, LLC

SERIES-3

FIRE ALARM  REPE ATER

, LLC

AR-3 Yagi to AR-3 Yagi

SERIES-3

FIRE ALARM  REPE ATER

, LLC

SERIES-3

FIRE ALARM  REPE ATER

, LLC

AR-3 Yagi to AR-3 Omni

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Summary of Contents for CWSI CP3000

Page 1: ...g Yagi Antennas The use of a Yagi Antenna or matching Yagi Antennas should be considered when you have at least one building that is farther than a typical Omni repeater to repeater installation can handle which is typically about 1100 feet when there is a clear unobstructed line of sight The other case would be when you have a large installation and you would like to have one direct link from the...

Page 2: ...The antenna on the RIGHT side of the repeater is the SLAVE The CP 3000 has an antenna on the MASTER side only SLAVES ALWAYS TALK TO MASTERS Therefore all transmitters report to the left side master of the repeater The repeater then transmits the data through the right side slave to the left side master of the next repeater that it talks to ...

Page 3: ...0 of the RF signal is transmitted The radiated pattern of a Yagi antenna can be considered a straight line with a very narrow corridor running its length that may be able to be tapped into depending upon SERIE S 3 FIR EALAR M R EPE ATER LLC CP 3000 ww w CWSIFire com CP3000 Yagi to AR 3 Yagi SERIE S 3 FIR EALAR M R EPE ATER LLC SERIE S 3 FIR EALAR M R EPE ATER LLC AR 3 Yagi to AR 3 Yagi SERIE S 3 F...

Page 4: ...he Omni Antennas on the Repeaters and the CP3000 The following drawing shows the Ideal radiation patterns of a Yagi to Yagi antenna These results were determined during RF field measurements Note All readings are subject to ideal testing conditions using Yagi antennas mounted at 8 to 15 feet above ground and aligned for survey testing Distances experienced by installers in the field are subject to...

Page 5: ...he master side of the next repeater or the CP 3000 You can have an antenna on the CP 3000 Since the CP 3000 is a master only that antenna will be in a receiving or gathering mode The second design is a bit different If you have a long distance application such as multiple buildings on an industrial site you can have antennas on both sides of the repeater the master side gathering signals and the s...

Page 6: ...distance applications The cost of the Yagi is considerably more than an Omni antenna however in the proper application a Yagi repeater may accomplish what it would take three Omni repeaters to do as such making the total installation more cost effective The key is the signal survey and keep in mind the mesh technology Create redundant links to assure multiple signaling paths ...

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