1/4 wave aerials

Discuss antenna construction, problems, tuning, designs...

Moderators: Sir Nigel, Nina, pcs, 5r, phpBB2 - Administrators

Post Reply
New registered user
New registered user
Posts: 1
Joined: Fri Oct 05, 2012 6:36 pm

1/4 wave aerials

Post by mlrude »

I've worked out from the table on this site that you add 5% to the the length of the radials when building these, but why? Other sites with 1/4 wave calculators tell me to use the same length radials as the radiator. I have noticed that 1/4 wave gp calculators shorten the 1/4 wave by about 5%, is this the reason?
User avatar
Site master
Site master
Posts: 3131
Joined: Fri Jan 18, 2002 1:00 am
Location: Radio Land

Post by pcs »

To get impedance as close to resistive 50 ohms I suppose.
Best regards,
Marko - PCS Electronics
Turn your PC into a FM radio station!
fax +386 4 2316 128
Post Reply