Folded Dipole

[crazyboy]

Anyone have a link to good instructions to build a folded dipole? Thanks

 

[wfinigan]

http://www.cebik.com/radio.html

This is probably the best site for antennas.

 

[ka3jjz]

Certainly one of the best; our antennas wiki has a few links in the homebrew and technical section on the subject, as does the AC6V supersite. Lots of information between those links on the subject.

The antennas wiki URL is in the sticky thread at the top of this forum. 73s Mike

 

[kb2vxa]

Why a folded dipole? It may be a bit more broad banded but has no other advantage. It's feedpoint impedance is 300 ohms vs. 75 for a straight dipole so for RG-6U or equivelent coax you need a 4:1 balun while you don't need one with a straight job.

Here's all the instructions you need. For HF use 3" or 4" open wire ladder line, for VHF use TV twinlead. Feed with the same and a balun on the down end for the lowest loss possible. Use the formula for finding a half wave 468/F in MHz and you have it.

 

[MacombMonitor]

Why a folded dipole? It may be a bit more broad banded but has no other advantage.

Isn't "broad banded" a major advantage for scanner monitors?

 

[crazyboy]

Why a folded dipole? It may be a bit more broad banded but has no other advantage. It's feedpoint impedance is 300 ohms vs. 75 for a straight dipole so for RG-6U or equivelent coax you need a 4:1 balun while you don't need one with a straight job.

Here's all the instructions you need. For HF use 3" or 4" open wire ladder line, for VHF use TV twinlead. Feed with the same and a balun on the down end for the lowest loss possible. Use the formula for finding a half wave 468/F in MHz and you have it.

I'm building it for the run of building it.

Thanks guys