Has anyone tried a similar abomination? The main node I use has a 2dBi antenna. A 5dBi antenna performs worse for connecting to most of the nodes in my vicinity. It does however connect to some nodes further away. So I decided to try adding a separate 5dBi node. That way devices close by could choose to route via either node, whichever seems better. Or traffic could jump between the two taking local traffic from the 2dBi node and beaming it further via the 5dBi node at the expense of an extra hop. Thoughts, experiences?
Rule of thumb is to keep the antennas at least one wavelength apart. On the 915 MHz band, that's 33 centimeters. So that should be the distance between the two antennas at minimum.
Would that matter if only one is transmitting at a time?
possibly as it could still couple to the other antenna and throw off the standing wave ratio