We have several high gain antennas and cables/connectors here that could be used with the option gs3 for example: omnidirectional magnet mount or directional yagi . One caveat however is that they should only be used when absolutely needed. The option gs3 has pretty powerful integrated antennas that allow sufficient (RSS) received signal strength and EIRP (effective isotropic radiated power) to provide reliable communication in most situations. If your RSS is already good adding an external antenna will most likely not help and could in fact hurt the link reliability.
There are instances where an external antenna is very critical. One of the classic examples is for vehicle use or where the Option gs3 has to be placed in a communication closet or in an area that would otherwise act as an RF shield. In this case the external antenna's primary benefit is not so much for its higher gain but for convenient antenna placement away from obstructions and where it can pick up a strong signal as well as have its radiation field not affected as much. This is also the case for buildings that have poor signal penetration. In this case a directional or omnidirectional cellular band antenna could be mounted external to the building and connection to the option gs3 using low loss coaxial cables. Also if your area doesn't have a good cellular reception then a roof mount directional yagi antenna oriented in direction of maximum received signal strength helps. You can find different styles of cellular band antennas here.
If in doubt as to whether you need an external antenna or what external antenna style would be most suited for your application just ask. We will be happy to help.
There are instances where an external antenna is very critical. One of the classic examples is for vehicle use or where the Option gs3 has to be placed in a communication closet or in an area that would otherwise act as an RF shield. In this case the external antenna's primary benefit is not so much for its higher gain but for convenient antenna placement away from obstructions and where it can pick up a strong signal as well as have its radiation field not affected as much. This is also the case for buildings that have poor signal penetration. In this case a directional or omnidirectional cellular band antenna could be mounted external to the building and connection to the option gs3 using low loss coaxial cables. Also if your area doesn't have a good cellular reception then a roof mount directional yagi antenna oriented in direction of maximum received signal strength helps. You can find different styles of cellular band antennas here.
If in doubt as to whether you need an external antenna or what external antenna style would be most suited for your application just ask. We will be happy to help.
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