Cheap and very good antenna for 5.6 Ghz FPV system

I just wondering and looking very good antenna for my FPV system.

Long time ago I bought very cheap antenna from BG. Flying near leg was good. Medium large bushes are no problem but SVR are very crap and longer distance wasn't available.

Looking in shops antenna for normal wallet :) found this one from surveilzone
Cost 7$ (spironet cost 40$ per 2 antennas 2x20$) so very good price and have at forums also have good opinions.

So... test them


Package what I received - well packed antenna is cover good. 

85 mm  length, diameter of mushroom 34mm

It is quite rigid and flexible

 

Using Fieldfox (agilent/keysight) i measuried SVR at bandwidth 5Ghz to 6Ghz 

As we can see the best SVR (the smallest losses) is about 5.76 Ghz freq = 1,3~ 
Between 5.6Ghz to 6Ghz SVR is lover than 1,5 so pretty good like for antenna worth 7$. 

The second parameter what I measured was reflection coefficient.

For the same ~~ 5.76Ghz freq. we can see -18dB. If you want need more about reflection coefficient read here.