Hello @it_mbeya,
There is a great amount involved in correctly choosing an antenna system that will deliver the most suitable outcomes for your application.
Most wireless (be that cellular/mobile or Wi-Fi) antenna system for MIMO work best with an out of phase antenna array (+/- 45 Degrees of the vertical), meaning you can have a very tightly packed antenna with exceptional performance. The cabling system needs to be 50Ohm impedance (not 75Ohm as used for Terrestrial TV & most MATV systems). The quality of the cable system can make just as big impact as the quality of the antenna, we run over 50 meter cable runs for some of our clients and get excellent results as we supply a professionally designed fit for purpose solution.
We suggest that you contact your local Authorised Peplink Partner for specialised assistance.
Your local Certified Peplink Partner can help you with a copy of the Antenna Selection Guide for Peplink Partners, this is a detailed guide and is only available to the Peplink Partners so to ensure that you are helped in working through it to get the most suitable antenna solution to your application.
Remember that the majority of these systems are MIMO (Multi In, Multi Out), so you must ensure you use antennas and cabling that are suitably designed for the application.
Happy to Help,
Marcus 