I need a better antennae for my laptop Antec digital TV tuner – it’s after-market product … ?
The plastic antenna that came with it works fine for all but one local channel over the air – except when a train passes by – the tracks are about 300 yards from my apartment.
Someone mentioned a homemade Yagi antenna – what’s that?
A Yagi antenna, also known as a Yagi-Uda array or simply a Yagi, is a unidirectional antenna commonly used in communications when a frequency is above 10 MHz. This type of antenna is popular among Amateur Radio and Citizens Band radio operators. It is used at some surface installations in satellite communications systems.
A basic Yagi consists of two or three straight elements, each measuring approximately1/2 electrical wavelengths. The antenna can be balanced or unbalanced. The Yagi is inherently a balanced antenna, but it can be fed with coaxial cable and a device called a balunat the point where the feed line joins the driven element.
There are some images of Yagi antennas here: http://images.google.com/images?sourceid=navclient&ie=UTF-8&rlz=1T4DMUS_enUS292US292&q=Yagi%20antenna&um=1&sa=N&tab=wi
Home made Antenna
