Frequently Asked Questions (FAQ)

In-building Repeaters

How do I know what repeater model I require to improve my cellular reception?

How do I know which antennas and cables to use for my repeater system?

How many phones can I use at the same time on a wireless system?

Will the repeater work with my lap top air card?

Do I need to know where my service provider's tower is located to point the external directional Yagi antenna?

Can I install a system to work with two or more different carriers' operating in the same area as my building?

Will the Walkie-Talkie (push-to-talk) function on the iDEN cellular phones work with the SignalReach CR300 iDEN repeater?

How much separation do I need between the outside and inside antennas? How much separation do I need between the amplifier and the antennas?

Does the external Yagi antenna need to be grounded?


How do I know what repeater model I require to improve my cellular reception?

Our wireless in-building repeaters are frequency-specific, operating at one of three frequencies: 800 MHz iDEN (Nextel), 850 MHz Cellular or 1900 MHz. PCS. In order to determine the frequency band of your wireless service provider in your area, you can do a search at WirelessAdvisor.com using your ZIP code. The search engine will display the frequency of operation for your service provider in your area. (example: T-Mobile 1900 MHz GSM / GPRS) You will need the following XterraWave™ repeater for its corresponding frequency band:

XW850  850 MHz AMPS, CDMA, 3G: CDMA2000 1X or GSM /GPRS, TDMA, 3G: EDGE

XW800i  800 MHz iDEN (Nextel, Southern LINC, Telus Mike)

XW1900  1900MHz GSM /GPRS, TDMA, 3G: EDGE or CDMA 3G: CDMA2000 1X



How do I know which antennas and cables to use for my repeater system?

You can use the Site Configuration Tool on this web site to select components to build a system to your needs. The tool will help you to optimize component selection to achieve the best results.



How many phones can I use at the same time on a wireless system?

The number of phones that can operate simultaneously on a wireless system depends on the capacity of the cellular tower equipment for each carrier and on the outside signal strength. A strong outside signal will ensure greater call capacity on the in-building system.



Will the repeater work with my lap top air card?

Yes, the XterraWave™ repeaters work with all cellular air cards. (GPRS, EDGE, CDMA2000 1xRTT and 1x EV-DO)



Do I need to know where my service provider's tower is located to point the external directional Yagi antenna?

You can slowly rotate the external Yagi antenna until the signal strength is maxiumized in the building on your cellular phone. It is important to rotate the external antenna slowly as the cellular phone's signal strength indicator can take 20-30 seconds to refresh.



Can I install a system to work with two or more different carriers' operating in the same area as my building?

If the carriers use different blocks of the same frequency bands (i.e. A or D block or sub-band of the 1900 MHz band), a system can be made to work in this situation with carefull consideration of the system's design. See the In-building System Design section for design guidelines.



Will the Walkie-Talkie (push-to-talk) function on the iDEN cellular phones work with the XterraWave™ XW800i iDEN repeater?

Yes, the Walkie-Talkie (push-to-talk) function will work.



How much separation do I need between the outside and inside antennas? How much separation do I need between the amplifier and the antennas?

The 60 dB repeaters will require around 20 feet of separation between the inside and outside antennas. (Separation is not measured by the length of cables connecting the antennas and repeater) The repeater has a built-in capability to measure feedback from the internal to external antennas. If feedback occurs (meaning, the the transmitted signal from one antenna is being amplified by the other antenna), the repeater will reduce its gain to break the feedback loop, and indicate feedback to the installer. The solution is to move the interior and exterior antennas away from each other until the feedback condition is removed. (this will be indicated by the repeater) The gain will automatically be reset to its normal setting after a short period of time.



Does the external Yagi antenna need to be grounded?

Most local building / electrical codes require that any external antenna be grounded for lightning protection. We recommend that lightning surge protection be used to protect electrical devices from lightning. Please check your local building / electrical codes for more information.



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