Is the 1 hour cooldown for the receiving gate, or the sending gate?

Cool down time is for both sending and receiving gates. However, it is specific to that particular gate. A level three JG will have a faster cool down time than a level one, so if a level one is used to send to a level three, the countdown time for both starts, but the level 3 JG has a shorter countdown clock before it can be used again.

the exact cooldown cycle is;

level 1 - 60 minutes
level 2 - 30 minutes
level 3 - 20 minutes

after level 3 i have no idea, dont think anyone has a level 4

Thanks. And is the res required *2 per level or what?

Arariel wrote:Thanks. And is the res required *2 per level or what?

yes, doubles every level

As does build time if I'm not mistaken.