VHF/UHF antenna using THREADED ROD

[tkamiya]

On sleepless night, I was thinking about antennas for a weather satellite reception.  Then this question come to my mind.  It also has to do with me seeing large quantity of threaded brass rod, about 3mm in diameter available at a local store.

Say there is a round brass rod.
Say there is a round brass rod that is threaded.

Are there any electrical difference between the two?

As this is RF, skin effect is "in effect".  If I think longitudinally, a threaded rod has about a double surface distance to travel (going up and down the thread) when compared to a simple rod.  How does this work in terms of wave length?  Is the size the object (rods) occupy in space more important or the how materials present electrically at micro level?

I know I can go zig-zag on a dipole and reduce the length but this is at a macro level. 

Does anyone have a theory or a practical experience? 

My usual mode of research is to think throughly first, then try it out.

[CopperCone]

The cut finish of the threaded rod will also make it have a much rougher surface texture then the normal rod.

Probobly frequency range you listed is too low for the surface roughness to matter