Thank you so much :)
You solved my problem. Finally I found that I must put number of the port in the config file, like:
[code]
Host MyServer
HostName myserver.com
Port 1992
IdentityFile ~/.ssh/mykey.pem
[/code]

Then I just need to run this command:
[code]svn co svn+ssh://[email protected]/my/repository/path[/code]