Hi all,

Doing some number crunching and wanted to ask if this was possible:
I have a required element diameter of ~2cm (I am looking at the 130MHz range) and wondered if it is possible to use a metal pipe (like copper), instead of a solid conductor?

All the best,
Robin

 

Hello Robin,

Have a look at how the 2 meter antennas are constructed in the links of this page:
http://ac6v.com/antprojects.htm
(for your information the 2 meter amateur band is from 144 to 146 Mhz).

Bertus

 

Hi all,

Doing some number crunching and wanted to ask if this was possible:
I have a required element diameter of ~2cm (I am looking at the 130MHz range) and wondered if it is possible to use a metal pipe (like copper), instead of a solid conductor?

All the best,
Robin

Sure, most commercially manufactured yagis use aluminum tubing. Don't forget that the larger the diameter of the elements, the wider the bandwidth will be. Google RF skin effect.

 

I guess it is possible and I agree that you can try using aluminum tubing.

 

Hi all,

Doing some number crunching and wanted to ask if this was possible:
I have a required element diameter of ~2cm (I am looking at the 130MHz range) and wondered if it is possible to use a metal pipe (like copper), instead of a solid conductor?

All the best,
Robin

It certainly is. Copper's an even better conductor than aluminum. The problem is its strength to weight ratio is a lot less, so you'll end up with a heavier antenna...which might not be a problem on 2 meters/