beam width of the helical is at least 90 degrees- plenty. A helical antenna is sort of like a patch antenna, except it is circularly polarized so it will work with the cloverleaf. If you just want to buy stuff use the stock antenna on the vtx and an 8dbi patch on the vrx.
My latest purchase.
Airwave 5.8g 100mw module
Super Simple Mini OSD
480tvl 5g camera from foxtech
5v regulator and random stuff from radioshack
current design without CP antenna... 20g!
Must be awesome to hook it up a mini swift from HK Chanyote!
I got 6 72mhz radios and RX's for $35, the bad one had a futaba module in it, so that's going in my Aurora for FPV usage!
It works, but Its just not synth. It uses crystals in the module and the radio uses it as a regular ppm output.
My latest: DragonOSDv2 (I fried my last one :/)