I use D-link & Bsnl modem Both Distribute Wifi signals To 10 Meters So i increase These Signal By This Ways......
My Broadband Wifi Router
I opened-up and replaced the external antenna with a female type-F connector
Internal View Of Modem With External Antenna
Antenna and Cable
Open External Antenna
Also Antenna Cable
Soldered to the Type-F Connector on antenna hole
My Modem Ready With F Connector Like Lnb Pin
Distribution By Splitter
CATV signals are between 50MHz to 850MHz, and Wifi Use 802.11g is around 2400MHz. I bought some diplexers designed for working with off-air televison signals and satellite LNB outputs and used them to combine/split the cable TV and the WiFi signals.
Now my wifi signal cover my whole Rooms

My Broadband Wifi Router
I opened-up and replaced the external antenna with a female type-F connector

Internal View Of Modem With External Antenna

Antenna and Cable

Open External Antenna

Also Antenna Cable

Soldered to the Type-F Connector on antenna hole

My Modem Ready With F Connector Like Lnb Pin

Distribution By Splitter
CATV signals are between 50MHz to 850MHz, and Wifi Use 802.11g is around 2400MHz. I bought some diplexers designed for working with off-air televison signals and satellite LNB outputs and used them to combine/split the cable TV and the WiFi signals.
Now my wifi signal cover my whole Rooms