Self-made collinear antenna

After trying some antennas for DVB-T (active and passive ones) with mixed results I tried to build my own collinear antenna.

Required Items:

• 2m Coaxial-cable ~2€
• Electrical conduit ~0,50€
• some cable ties
• duct tape

Information about collinear ADS-B Antenna: http://www.balarad.net/
General information about collinear antennas: http://en.wikipedia.org/wiki/Collinear_antenna_array 
Youtube video on build process: https://www.youtube.com/watch?v=TkUYdCPFXXs