½ wave dipole antenna

Help with installing an Antenna, or just choosing the right antenna to go with your radio, or your mobile.
Post Reply Previous topicNext topic
User avatar
EricExtreme
4 PILL USER
4 PILL USER
Posts: 43
Joined: March 28th, 2006, 9:18 am
Age: 43
16

½ wave dipole antenna

#409330

Post by EricExtreme »

I am erecting a ½ wave dipole. I am curious as to what height off the ground will offer optimum performance? I have a 140ft long dipole for 70cm - 160 meters amateur radio and the optimal height was over 100 feet up in the air between two trees on opposite sides of my property. What would the optimal height be for an 11 meter ½ wave dipole? Thanks!






American Eagle 813 (Æ813)
Galaxy DX959b (radio) - Astatic D104 Silver Eagle (mic)
LMR-600 (coax) - 108 inch whip ball mount (antenna)

Donate to CBRT
User avatar
295 antenna
Verified
Moderator
Moderator
Posts: 1,914
Joined: October 23rd, 2016, 10:45 pm
Age: 64
5

#409331

Post by 295 antenna »

The way I understand it should atleast 1/2 wave length above ground level






Keep smiling ...It makes people wonder what your up too !

American eagle SSB group : AE1577

TWRC - The world radio group : WR2950

world wide sidebanders - WWS2950

Donate to CBRT
User avatar
MDYoungblood
Verified
Site Admin
Site Admin
Posts: 10,464
Joined: June 12th, 2010, 8:05 pm
Age: 70
12

#409334

Post by MDYoungblood »

A dipole can be installed at any height, the higher the better for distant, I ran one (inverted V) about 12ft off the ground with good results. The ham antenna uses a balun to compensate for irregularities, never seen one go up to the 70 cm band. Are you going to use a balun ?

3’s

Greg






"321, NW South Carolina"

Official Moderator - CBRT Complaint Department

Donate to CBRT
User avatar
443 Arizona
Wordwide & Qualified
Wordwide & Qualified
Posts: 830
Joined: April 29th, 2010, 2:22 pm
Age: 65
12

#409355

Post by 443 Arizona »

i had amazing results at just 20', had experimented with 4 balun's,







Donate to CBRT
Post Reply Previous topicNext topic