wirelessrudy Posted December 14, 2015 Report Share Posted December 14, 2015 Is there really an advantage in using triple chain VVH (or VHH) antenna in a network presently consisting out of a mixture of V-pol single chain antennas with V+H-pol antennas? (Network consists of Groove's on 24-25dBi or higher Mesh/panel antenna and some SXT's and SEXTANTS and the first RF Basebox XL5's) We use Mikrotik radio's only and to us it seems the radio only uses these chains that give best signal. In our opinion it is not like a VVH-polantenna on AP side will increase signal at V-pol client with 3dB (or 1,5dB in case of the use of duo chain antena at client). Now to make a transition to full duo chain network we have to change these 1xCH ones one by one for dual chain CPE's antenna. For budget reasons we are planning to use Basebox XL5 with rb911's. But gain is 19dBi where the duo chain setup gives us 3dB extra. So compared to a 25dBi mesh we still loose 3dB signal (halve the energy!). In the 'old' days we worked with signal levels at CPE (Rx) up to -81dB but we now try to maintain -70 or better to sustain the higher mcs rates. (Clients want more speed than 2 years ago!) We already increase the Tx at the AP from 25dBm to 30 or 31dBm and will use either RF carrier class or the Simper cone antennas to bring more, and 'cleaner' signal to the CPE. But we are still not sure if a triple chain sector would give us any benefit above a duo chain sector. (On the moment the triple chain NetMetals are actaully cheaper than the duo chain units!) Anybody has any say in this? Quote Link to comment Share on other sites More sharing options...
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