Looking for data to make a DY14 TV antenna

hi people. im new to this site and im wondering if someones got diagrams and dimensions and sizes and a list of parts needed to make a dy14 antenna to pickup channels 6 to 12.

the reason for asking is because i want to have a go at making one so if yous can supply dimensions and parts list that would be great.

is it possible to buy 75 ohm saddle and f type antenna combiners to couple 2 antennas picking up the same channel