So I've been following this guide on how to build an antenna for a High altitude balloon: link
In the guide they say to use RG174 wire, which is why I bough some cheap RG174 wire off Ebay. I guessed that not even the Chinese could mess something as simple as wire up. However the wire I got looks a bit different to what I expected. I suspect it might not be RG174 wire but some other Coax wire. The inner wire is very thin (with a diameter of maybe 0.4 mm or so). Is that ok? Does the thickness of the wire used affect the antenna?
I suppose it isn't that important that the wire is RG174 as long as it is something similar? So what do you think? Is this wire ok to use?