I find solution.
I download http://intellinuxwireless.org/iwlwifi/downloads/iwlwifi-3945-ucode-2.14.1.5.tgz and replace the files in /lib/firmware with files from this rar
I find solution.
I download http:// intellinuxwirel ess.org/ iwlwifi/ downloads/ iwlwifi- 3945-ucode- 2.14.1. 5.tgz
and replace the files in /lib/firmware with files from this rar