Confirm Action

Are you sure you wish to do this?

Confirm Cancel
Member Login

Posted: 4/25/2014 11:37:18 AM EDT
Is there a certain orientation to the EFHW that improves signals in that specific direction?
Link Posted: 4/25/2014 11:51:59 AM EDT
[Last Edit: 4/25/2014 12:03:39 PM EDT by LRB-MT]
I looked at a 4NEC2 model called end feer dipole out which looks like a end feed wire antenna and it looks like it is non-directional.

Looked at a slope on the wire, still non-directional. But the one end was 11 meters up.
Link Posted: 4/25/2014 11:55:41 AM EDT
Do you plan on running it as a sloper?
Link Posted: 4/25/2014 11:58:22 AM EDT
For practical purposes it would be a sloper.

Like this:

Link Posted: 4/25/2014 12:04:57 PM EDT
Treat it as you would a dipole, the pattern may be slightly distorted relative to a "real" dipole but
directivity is the same, perpendicular (that is broadside) to the wire. There will be very little signal
off the end of the wire, and what there is, is mostly due to the pattern distortion due to the coax
being part of the counterpoise.
Link Posted: 4/25/2014 12:11:57 PM EDT
Check out what LNR Precision says about how to deploy their end fed antennas.
Link Posted: 4/25/2014 12:56:41 PM EDT
[Last Edit: 4/25/2014 12:59:56 PM EDT by BigDaddy0004]
My north-south oriented LNR EF-40/20 slopes from 7' to 55' and definitely radiates broadside (east-west).
Link Posted: 4/25/2014 1:47:49 PM EDT
[Last Edit: 4/25/2014 1:48:35 PM EDT by robmkivseries70]

As long as the antenna is not longer than 1/2 wavelength it will act as a dipole. Longer antennas will begin to show directional lobes as the length increases above a half wave. It takes 5 to 6 wavelengths to really begin to constitute a 'long wire' antenna. IIRC
Top Top