Ok so i figured some of you guys out ther liek me are in class and the signal strength is like 10% and its like connection to server lost so you went on the web and found that hoakie setup for an external antenna but you thought it looked well hoakie since it was permenetly attached and it was liek a brick i made a setup which uses a jack instead so that you can hookup any antenna you want.
I have already done this mod however i removed the internal antenna so now i will open up my psp for you and show you how to set it up with the internal antenna and the external reverse sma jack however since it is just a 2 conductor setup you could probably use any connector you want and make an external adapter to make it any jack you want
this is what i will be using

the hole by the umd door is where my sma jack goes the thing on the umd door is the internal antenna the gold thing is my jack and the white thing is my external antenna not shown is the cable used for this mod