To avoid misunderstanding each, may I suggest rename "Earth Antenna" to
"Two Earth Electrodes Antenna"?
 JA5FP, a friend of mine, wrote a literature on so called "Earth Surface
Antenna" at bellow URL, but written in Japanese.  There are some figures
on direction path. 
http://www.h4.dion.ne.jp/~ja5fp/gant.pdf
 Notes: He has a US Callsign so that any question in English MAY BE
accepted.
7L1RLL - Rick

On Thu, 2010-08-12 at 18:44 +0100, Roger Lapthorn wrote:
> Mal,
> 
> Not so, but then you wouldn't want to know as you only transmit with
> radio waves and mouth.
> 
> 73s
> Roger
> 
> 
> 
> On 12 August 2010 18:10, mal hamilton <[email protected]> wrote:
>             These so called Earth antennas are but bodged Beverage
>         systems, wires laying on or slightly above ground, staked at
>         one end as opposed to being terminated with a resistor or left
>         floating. Beverages or bodges are useful for Receiving in some
>         cases but USELESS for Transmitting.
>         An Antenna is an elevated wire raised as high as possible
>         above ground, an Earth is a spike driven into the
>         ground underneath your feet,  basic radio theory.
>         G3KEV
>          
> 
> 
> 
> -- 
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> G3XBM   GQRP 1678    ISWL G11088