As per dmantill mention once we have a 1310 in root bridge and the other one in non root bridge the non root bridge will not enable the radio until it sees a good signal from the root bridge and its status will be reset down.
Remember that we have 2 types of 1310 the ones with build in antennas and the ones with no build in antenna and require and external antenna connected to it.
To know if your unit has a build in antenna or not the part number will not include a (-R) if it has a (–R) it means that the unit does not have a build in antenna.
Also remember that when we work with bridges we need to set them in install mode (install root bridge and install non root bridge)this mode will only allow the units to associate to each other and not pass traffic and the led’s on the back of the unit will stop works as usual and help us for antenna alignment between the units.
Here is the link that lets us know what each sequence we get on the leds once in install mode to know how god the antenna aliment or signal is.
http://www.cisco.com/en/US/docs/wireless/access_point/1300/installation/guide/130h_c3.html#wp1056656
Also remember that when working with bridges by defaults the units are set to work at full power and this would create 2 scenarios.
For example, if the units are able to cover up to 5km with full power if the distance between the units is more than 5 km then they will not be able connect and if the distance is shorter than 5 km let’s say 1 km and we leave the units at full power there is going to be too much interface and signal to noise on the connection due to the short distance between the units and at the end this could make the units not see a good signal between them.
For instance lets say we are on a football field and each of us is on a touchdown side and for us to be able to hear each other we need to scream to each other, but if we then walk to the center of the field and we keeping screaming we are going to hear ourselves but we will not be able to understand what we are saying to each other and we will need to lower our voice.
Here is the outdoor range calculation utility to check what is the exact distance we can cover with a unit and at an specific data rate.
http://www.cisco.com/en/US/products/hw/wireless/ps458/products_tech_note09186a008009459b.shtml
Just in case usefull links.
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a008058f53e.shtml
http://www.cisco.com/en/US/products/hw/wireless/ps469/products_tech_note09186a0080508551.shtml
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_q_and_a_item09186a008015502c.shtml
