[DX] dipole vs horiz. loop for low band DXing
Dr Pepper
[email protected]
Mon, 04 Nov 2002 08:40:27 -0800
OR, , , A cheaper solution, , , , ,
Get an "G5RV" antenna from Ebay, for about 35 bucks, and you will find a
great antenna for forty meters as well as other bands with a tuner. I've
been using the "junior" version, with great success on 40, 20 and 10
from California for years. Hang it in a inverted VEE configuration for
components of both vertical and horizontal polorization.
I don't have the room for beams or other full size antennas.
Ron C.
WB6GKI
===========================================
[email protected] wrote:
>ANY horizontally polarized antenna at 1/4 Wavelength (WL)
>or less in height will radiate primarily straight UP.
>
>If you cannot place a horizontally polarized antenna
>for 40M at least 50 ft high, you would be better off
>with a GOOD VERTICAL antenna which also requires
>at least 30 radials, preferably 1/4 WL long.
>
>See any good Antenna Book such as the ARRL
>Antenna Handbook for ground reflection coefficents
>vs height and plots of horizontally polarized antenna
>patterns in the vertical plane.
>
>I like the MFJ 1792 80 / 40 vertical which is full size
>on 40M with a TOP isolating / loading coil and top hat
>for 80M. It is reasonably priced around $160.
>
>BASE Loaded verticals (HF2V, HF6V) etc
>have the LEAST efficient loading for 80M.
>
>Tom N4KG (RF Engineer, DXer, Contester)
>
>
>
>
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