Other than a repeater (an AP device in trepeater mode), your only only choice would be an external antenna (as in "not built into the AP antenna").
If the flavor of 1300 you're using doesn't have external antenna connections, you're pretty much stuck. You'll need either another AP(as a repeater) or another pair of APs (with external antenna connections).
You may be able to re-position the APs ... perhaps the problem is the signal pattern being deformed by local "features" in the walls, ceiling, or other sturcture.
Try standing them off from the wall or ceiling a little further.
One other thing you can try, and this is just short of "Wireless Voodoo" would be to fashion a reflector at each end to further concentrate the RF in the desired direction.
It is rumored, and it DID work for me to some degree in the Lab, that a CD (like an audio CD) happens to work as a reflector.
You'll need to have someone at the other end watching signal strength while you adjust the distance of the CD behind the AP to maximize the effect.
Any ungrounded metal surface should work, so if you're into experimentation, it may save you the money (but Time is Money too, right?).
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...
This is the start of a display filter cross reference between Wireshark and OmniPeek.
The 1st installment is a table of advanced filters. More filters will be added as time allows.
It is a living doc, so check back for changes every so often
Please feel ...
I have created a Powershell script to automatically add a Wireless Guest User on Cisco WLCs. (tested on 2500 Series)
The script should be completely self explanatory.
Powershell SNMP Module (Install-Module -Name SNMP)
SNMP Write Access to...