wireless 1300 outdoor embedded device slow and laptop speed
I am new in outdoor wireless, I recently installed an 1300 AP series on a roof I need vehicles to download every day some datas to an embedded wireless device using an atheros chipset. with those devices, Download is very slow and the average to download 25Mb can take half an hour because of disconnection, the download protocol is FTP, when I try with my Windows 7 laptop using an embedded intel wireless chipset the same FTP download take me 35 seconds, sometimes it can disconnect also.
Can you give some help on how to troubleshoot it ? because using an ACKSYS with the same device and the same wired network for the FTP server which is a highspeed network LAN, it takes 1 minute so it is very correct response time.