Just fed everything from a 12V battery (no mains grounds) and result unchanged. 
It STILL works. 

Now QRT until late this evening as my Internet signal in the rear study where 
set up temporarily is too weak to reliably sync time without all the doors 
open! After about 10.30 I'll try again when we go to bed and leave all internal 
doors open, HI. 

Fascinating results. 

73s
Roger G3XBM  

On 7 Jan 2013, at 16:57, g3zjo <[email protected]> wrote:

> Yes still a good signal.
> 
> I take it there is no Earth connection via the TX chassis - PSU route either.
> 
> You know I am pretty sure that round here I would get dreadful hum from 2 
> earth stakes.
> When I was the other side of town and much younger I melted the innards of my 
> AVO Multiminor measuring between two earths. Also I ran a 6 Volt fan and 
> charged batteries via a diode between Neutral and an earth spike. The fan 
> would go so fast on a Sunday morning (electric cookers) that it would take 
> off.
> 
> Eddie
> 
> 
> 
> On 07/01/2013 16:36, Roger Lapthorn wrote:
>> Since 1608gmt I have been WSPRing with an even shorter earth electrode 
>> "antenna" ( baseline about 15m) with BOTH ends connected to ground rods in 
>> the soil. Max connecting wire height still 1.5m. Yesterday I used the house 
>> pipes as one ground.
>> 
>> Initial tests suggest reports are almost identical, suggesting the true " 
>> loop in the ground" hypothesis rather than propagation aided in any way by 
>> pipes. This is NOT the case at VLF.
>> 
>> Most fascinating that this tiny "non antenna" works at all.
>> 
>> 73s
>> Roger G3XBM
>