uhf

Hey all, I am looking for some help to build an RF Modulator schematic from 1985. I was searching for a way to wirelessly transmit a UHF/VHF TV signal to an old portable TV I have and found a schematic on a website called Petlibrary (https://petlibrary.tripod.com/rfmod.htm). My idea was to use...

I bought this antenna for my Sparkfun Simultaneous Reader, but I don't understand which jumper will do what function. The antenna didn't come with datasheet and I can't find it on the Internet. I tried connecting different jumpers and tried to make sense what jumper will do what, but can't...