Wireless range with TG1672G router - Time Warner Internet

This question is about "Wireless range with TG1672G router", with Time Warner Cable internet and apps. I have terrible wireless reception no more than 30 ft from the position of my router. My main TV with DVR is in this zone, and can't stream video content. Is there anything I can do? Will this modem support an external directional antenna? I already have a WiFi extender halfway.

This topic covered Wireless range with TG1672G router, and TWC cable internet service.