I was in my village and there was no reliable internet connection available there.
I had my evo device but only signals available were on the roof. So i decided to use external antenna with my evo device.
I bought the connector cable from market for Rs. 300 . I attached my evo device to the vfone external antenna through the connector cable. After adjusting the direction of antenna i was able to get two signal bars and a reasonable speed.
1. Connector cable for evo external antenna.
2. Place for connecting cable on device.
3. Cable connected to device.